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Zeitschriftenartikel zum Thema „HALCON“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 27. April 2022

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1

He, Yang Ming, Yan Qiu He, Guang Yao Xiong und Ming Feng Zhu. „Application of Halcon in Digital Image and Signal“. Applied Mechanics and Materials 716-717 (Dezember 2014): 1338–40. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1338.

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Halcon is a machine vision software. It can process all kinds of image processing problem. In this paper, Halcon is used to process moving targets detection, from which it can be seen how the software Halcon is used to process digital image. The algorithm includes region_ growing algorithm, image filtering and morphological operators, etc. The software Halcon can be used in digital signal, too. In the end, it is used to process pulse signal. The result shows that Halcon has powerful functions in digital data processing.

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Han, Baoan, Hui Yu Xiang, Zhe Li und Xiao Zhuang Zhou. „Feature Size Measurement of Multihole Sheet Metal Part Based on HALCON“. Applied Mechanics and Materials 302 (Februar 2013): 546–49. http://dx.doi.org/10.4028/www.scientific.net/amm.302.546.

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To realize the target of having a precise feature size measurement of multihole sheet metal part, this paper based on HALCON, first calibrates the camera with HALCON's calibration assistant. After acquiring the image of the multihole sheet metal part, the image coordinates of the center of fitting ellipse and the length of the long and short half shaft (pixel unit) can be gotten by proceeding a series of operations like thresholding, subpixel-precise contour extraction, fitting ellipses and so on. At last, the point coordinates in image are transformed into the plane Z=0 of the world coordinate system through translation and rotation, and the value of each feature size of the sheet metal part can be calculated.

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Zhang, Zhi Xian, Li Liang und Yong Deng. „Camera Calibration Method Based on Halcon“. Applied Mechanics and Materials 385-386 (August 2013): 518–22. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.518.

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Aiming at the applications of computer vision,a nonlinear image geometrical model for array CCD camera was build and the interior parameters and exterior parameters as well were analyzed.By applying Halcon calibration board with circular targets plane of matrix gridding type and functions library,a camera calibration algorithm and accuracy analysis were given.Experiments indicated that the parameters were accurate and this method is simple and it improves the calibration precision and computation speed, and has a good cross-platform portability.

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Huang, Bin, Jun Liu, Mingbin Chen und Qidong Fan. „Recognition of Blurring Alphabet Character on Timing Pulley Drawing Based on Halcon Image Processing Technology“. Journal of Physics: Conference Series 2074, Nr. 1 (01.11.2021): 012015. http://dx.doi.org/10.1088/1742-6596/2074/1/012015.

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Abstract In order to solve the problem of Inefficiency in the use of manual detection of the information on the engineering drawings in synchronous belt manufacturers. This paper present a method of image processing based on HALCON. Firstly, the image will be inputted to the software platform, then the image will be processing by the means of Image enhancement, threshold segmentation and so on. Thus, the information on the engineering drawings can be recognized. This experience shows that blurring alphabet character on the engineering drawings can be recognized quickly and accurately based on Halcon. It can effectively reduce the workload, increasing the productivity.

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Han, Liang, Yong Ming Liu, Dan Ya He und Feng Xiao. „A Study on the Inspection Technology of the Electrode Defects of Li-Ion Power Battery Based on HALCON“. Applied Mechanics and Materials 470 (Dezember 2013): 617–20. http://dx.doi.org/10.4028/www.scientific.net/amm.470.617.

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Li-ion battery becomes an important development direction because of energy shortage and environmental pollution. The electrode is the main part of Li-ion battery, which has the important influence to the performance, cycle life and the capacity of the battery. So, it is necessary that we should accurately detect the surface defects of the electrode. The paper provides a detection approach based on industrial camera and image processing software HALCON. The machine vision technology is used to detect defects of the electrode, and the high-performance software HALCON to process and analyze the acquired image. The combination of software and hardware can improve the efficiency of detection.

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Boyacá Mendivelso, Alejandro, und Ezio Tempesti. „Síntesis y ensayo de un ionómero como catalizador de epoxidación de olefinas“. Ingeniería e Investigación, Nr. 31 (01.01.1995): 45–53. http://dx.doi.org/10.15446/ing.investig.n31.24696.

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El propósito del presente trabajo es la preparación de un ionómero con base en Molibdeno y evaluar su actividad como catalizador de epoxidación de olefinas como alternativa de síntesis de catalizadores del proceso Halcon. Se sintetiza un polímero con grupos funcionales disponibles para estabilizar el metal a partir de molibdato de sodio, la caracterización se hace por absorción atómica, espectroscopia I.R. y X.P.S. La caracterización indica que efectivamente se logra estabilizar el Mo en la matriz polimérica. La evaluación en reacción en fase liquida permite conversiones similares a las de un catalizador homogéneo. La epoxidación selectiva de olefinas por alquil hidroperóxidos, ha adquirido gran importancia dentro de los procesos de obtención industrial de óxido de propileno debido a la reciente utilización del alcohol terbutílico (coproducido junto con el epóxido), como aditivo en gasolinas libres de plomo. En el ámbito de estos procesos, y en particular en el proceso Halcon, existen posibilidades de innovación tecnológica, en lo concerniente a la heterogenización de catalizadores convencionales, actualmente empleados en fase homogénea. El presente trabajo se suma a algunas tentativas que buscan generar alternativas de preparación de catalizadores para el proceso Halcon, sintetizando y probando la actividad de un ionómero como catalizador de epoxidación, el cual intenta reproducir la estructura química de los complejos organo-metálicos pero suprimir las etapas de separación y recuperación necesarias posibilitando su reutilización cíclica con eventuales repercusiones económicas en el proceso industrial. Se describe el procedimiento de síntesis del ionómero, la caracterización y la evaluación de la actividad en reacción en diversas condiciones. De la caracterización efectuada se desprende que la heterogenización de catalizadores para epoxidación de olefinas, según el proceso Halcon, es posible mediante la preparación de polímeros modificados apropiadamente. Así mismo la evaluación en reacción ha tenido un resultado exitoso, alcanzando conversiones comparables a las de un catalizador homogéneo.

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C. VILLANUEVA, ELAINE LOREEN, und INOCENCIO E. BUOT, JR. „Vegetation analysis along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro Island, Philippines“. Biodiversitas Journal of Biological Diversity 19, Nr. 6 (09.10.2018): 2163–74. http://dx.doi.org/10.13057/biodiv/d190624.

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Villanueva ELC, Buot, JrIE. 2018. Vegetation analysis along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro Island, Philippines. Biodiversitas 19: 2163-2174. The vegetation of Halcon Range is diverse, unique, and culturally important; however, there is a very limited information on its altitudinal distribution and structure, leading to the formation of land uses that trigger problem in sustainable management decisions for the mountain. This study analyzed the vegetation in land use types distribution along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro, Philippines. Fourteen plots of 10 x 10m were established along the slope from 100m-1400m elevation. The tree species that were sampled from the plots were subjected to classification and ordination analyses. The dendrogram showed three distinct vegetation zones corresponding land use types: Zone I (agroforest land use zone), Lansium-Artocarpus-Swietenia-Ficus-Nephelium-Mangifera zone; Zone II (forest land use zone), Cyathea-Astronia-Syzygium-Garcinia-Ficus-Psydrax-Diplodiscus zone; and Zone III (forest land use zone), Agathis-Suli-Alitugba-Ardisia zone. Canonical correspondence analysis (CCA) indicated that elevation, temperature and pH level are the environmental variables that strongly influenced the vegetation distribution in various land uses, a characteristic that is similar to other tropical mountains.

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Xiang, Hui Yu, Zhe Li, Jia Jun Huang und Baoan Han. „Research of Stereo Matching Based on HALCON“. Applied Mechanics and Materials 415 (September 2013): 361–64. http://dx.doi.org/10.4028/www.scientific.net/amm.415.361.

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Binocular stereo matching is a hot and difficult problem in machine vision. In this paper, based on the matching method of Halcon which is visual software perform image matching. First, performing binocular stereo vision system calibration, based on the calibration results acquired the epipolar standard geometric structure. Then, image matching researched under this structure. At last, using ncc matching algorithm, through comparing the different parameters matching window obtain ideal match results. Experiments prove that this method not only can effectively shorten matching time, but also can achieve higher matching accuracy.

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Xi, Chuan Li, Xiao Rong Chen und Yuan Cong. „Halcon-Based Optical Fiber Geometry Parameters Measurement Algorithm“. Advanced Materials Research 805-806 (September 2013): 1929–32. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.1929.

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This paper presents an algorithm to measure geometric parameters of optical fibers based on Halcon. The algorithm enhances the contrast of the fiber image and uses canny edge detection operator to extract the contours of fiber cross section. In order to remove noise in the contour, this paper studies new methods, include setting the contour length range, whether each contour is circular or not and whether the center of the circular contour and the center of the fiber core is consistent or not. These methods remove most of the noise. Finally, the effective contours are merged and then approximated by circle and ellipse. According to the mathematical model, all parameters required can be obtained. Experiment results show that the algorithm accuracy meet the needs.

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Liu, Xue Ping, Yi Chang Chen und Zu Fu Pang. „Camera Calibration Technique Based on HALCON Machine Vision“. Applied Mechanics and Materials 365-366 (August 2013): 666–71. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.666.

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According to the perspective projection performed by a pinhole camera, taking full account of the lens radial distortion factor, the transformation between the camera coordinate has been analyzed. Combining with camera model instance of surface mount devices, the system uses Halcon machine vision software which has a powerful geometric and image computing functions to solve the camera calibration parameters and the accuracy of calibration results has been verified in practical applications. This method has advantages of computational efficiency and good value of cross-platform porting applications.

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Zhang, Yu Xiao, Wen Zhong Tang und Yun Peng Wang. „Based on the Research of Halcon Vehicle Identification Technology“. Applied Mechanics and Materials 513-517 (Februar 2014): 3790–93. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3790.

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With the increase of urban car ownership and the development of computer technology and image processing technology, through the video detection of traffic information more and more important. This paper proposes a testing method of vehicle identification, and separately in grayscale matching, pattern matching and shape matching three methods respectively to test the vehicle, and respectively analyzes the three methods of accuracy and the reasons for the unreasonable data.

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张, 鸣磊. „Pointer Instrument Recognition Based on Halcon Template Matching Optimization“. Artificial Intelligence and Robotics Research 09, Nr. 02 (2020): 123–30. http://dx.doi.org/10.12677/airr.2020.92014.

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13

MRIKA, Hiroyuki, und Rogelio V. SISON. „Birds of the Highlands of Mt. Halcon, Mindoro, Philippines“. Japanese Journal of Ornithology 35, Nr. 4 (1987): 109–24. http://dx.doi.org/10.3838/jjo.35.109.

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黄, 远民. „Surface Defects Inspection of Solar Cell Based on Halcon“. Mechanical Engineering and Technology 02, Nr. 04 (2013): 118–22. http://dx.doi.org/10.12677/met.2013.24023.

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15

Mirilović, Stefan, und Milan Vidaković. „SISTEM ZA SKUPLJANJE I POSTAVLJANJE PRSTENJA SA MAŠINSKIM PREPOZNAVANJEM“. Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 36, Nr. 11 (09.11.2021): 1981–84. http://dx.doi.org/10.24867/15be32mirilovic.

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Zadatak rada predstavlja sistem za skupljanje i postavljanje (Pick-and-Place) prstenja sa mašinskim prepoznavanjem. Softverski deo predstavljaju WPF aplikacija, realizovana upotrebom Halcon i Codesys okruženja. Hardverski deo je realizovan upotrebom Fanuc robota CRX-10iA/L sa specijalno napravljenom hvataljkom i kamerom. WPF aplikacija omogućava korisniku da pušta, pauzira i stopira robota, među ostalim funkcijama.

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Hou, A. Lin, Ying Geng, Xue Cui, Wen Ju Yuan und Feng Guang Shi. „Measurement of the Depth Distance Based on the Binocular Stereo Vision“. Advanced Materials Research 468-471 (Februar 2012): 1895–98. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.1895.

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The measurement system of the depth distance based on binocular stereo vision is proposed. The model of camera imaging is established and the process of camera calibration is described. Interior and external parameters of two cameras are calculated by HALCON. Then the depth distance can be obtained by the parallax measurement of the image pairs. The simulation experiments have been done and the results demonstrated that the measuring method is feasible.

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Tang, Rui Yin, und Peng Fei Li. „Optimizing of Light Stripe Image Acquisition in Light Section Method Measurement“. Applied Mechanics and Materials 475-476 (Dezember 2013): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.366.

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This paper proposed a method to acquire high quality profile image based on a serious of special parameters selection and setting.And to deal with the un-matching between the speed of image grabbing and image processing,we use a special method to grab and process image in parallel based on Halcon platform. The experimental results obtained the high quality light stripe image that could increase the efficiency of measurement and simplify the image process algorithm.

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Liu, Zhi Yuan, und Xue Zhang Zhao. „Research and Implementation of Image Rotation Based on CUDA“. Advanced Materials Research 216 (März 2011): 708–12. http://dx.doi.org/10.4028/www.scientific.net/amr.216.708.

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GPU technology release CPU from burdensome graphic computing task. The nVIDIA company, the main GPU producer, adds CUDA technology in new GPU models which enhances GPU function greatly and has much advantage in computing complex matrix. General algorithms of image rotation and the structure of CUDA are introduced in this paper. An example of rotating an image by using HALCON based on CPU instruction extensions and CUDA technology is to prove the advantage of CUDA by comparing two results.

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Hou, Alin, Ying Geng, Xue Cui, Wen Ju Yuan und Feng Guang Shi. „The Implementation of Distance Measurement Using Binocular Vision“. Advanced Materials Research 490-495 (März 2012): 711–15. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.711.

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The method of distance measurement based on binocular stereo vision is presented in this paper. The model of camera imaging is established and the process of camera calibration is described. Interior and external parameters of two cameras are calculated by HALCON. The system of visual measurement is fabricated. The parallax measurement of the image pairs is accomplished. The simulation experiments of distance measurement have been done and the calculated results can be in accordance with the actual distance.

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Zhang, Zhi Xian, und Zhen De Zhu. „A Calibration Method of Binocular Stereo Vision System Based on Halcon“. Advanced Materials Research 989-994 (Juli 2014): 3007–10. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3007.

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This paper describes the pinhole camera model combined with an area sensor and a regular lens and the imaging model of the binocular stereo vision system. Also a method to determine the internal and external parameters of a camera by transferring the coordinates three times is described. Then a calibration experiment is carried out with the Halcon calibration board which proved the method works. The method mentioned in this paper has laid a good foundation for measuring the size of objects with the binocular stereo vision system.

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Peng, Qingfeng, und Shifeng Yang. „Research on VisualInspection System of Waterproof Breathable Membrane Based on HALCON“. Journal of Physics: Conference Series 1486 (April 2020): 042036. http://dx.doi.org/10.1088/1742-6596/1486/4/042036.

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jian, Wang, Wei lai und Chen xiao-ning. „Target Detection and Correction of Micro-motor Rotor Based on HALCON“. Journal of Physics: Conference Series 1605 (August 2020): 012024. http://dx.doi.org/10.1088/1742-6596/1605/1/012024.

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Han, Bao An, Hui Yu Xiang, Zhe Li und Jia Jun Huang. „Defects Detection of Sheet Metal Parts Based on HALCON and Region Morphology“. Applied Mechanics and Materials 365-366 (August 2013): 729–32. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.729.

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In order to realize the manufacturing defects detection of sheet metal parts, a kind of defects detection method of the sheet metal parts based on region morphology has been put forward based on HALCON using the mathematical morphology knowledge: by choosing the proper structuring element and neatly applying dilation, erosion, opening and closing on the defects images, the defect part is extracted. The experiment shows that the effect of this method is good and the calculation and processing speed is fast.

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Xiang, Hui Yu, Bao An Han, Zhe Li und Jia Jun Huang. „Binocular Stereo Vision Calibration System Implementation of Grid Strain Measurement in Sheet Forming“. Applied Mechanics and Materials 397-400 (September 2013): 1547–51. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1547.

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For the research of camera calibration in the system of grid strain measurement in sheet forming, the pinhole camera model, the nonlinear model of the camera and the binocular stereo model are analyzed, drawing a binocular stereo calibration method based on HALCON, which detailedly describes the calibration principle and specific calibration process. A binocular stereo vision calibration system based on VC6.0 is established, by which the influence on camera focus, distortion factor and principle points from the number of calibration images is verified by experiments.

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Wu, Xiao Song, Rui Miao, Yu Dong Si, Cheok Man Lou, Duan Xia Xu und Xue Ning Chu. „Surface Spot Defects Inspection of Multi-Crystalline Silicon Wafers Based on HALCON“. Advanced Materials Research 1081 (Dezember 2014): 241–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1081.241.

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As a common kind of surface defects on multi-crystalline silicon solar cells (about 65% of total defects). Based on HALCON image processing library, an automatic silicon wafer surface spot defects detection and classification system has been developed: captured color images via CCD image sensor, located wafers and spots, extracted the spot features, computed and separated the qualified regions from the unqualified ones by SVM classifier. The experimental result showed a high accuracy of 95.7% and fast image analyzing and classifying process (less than 600ms).

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Zou, Yanbiao, Jinchao Li und Xiangzhi Chen. „Seam tracking investigation via striped line laser sensor“. Industrial Robot: An International Journal 44, Nr. 5 (21.08.2017): 609–17. http://dx.doi.org/10.1108/ir-11-2016-0294.

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Purpose This paper aims to propose a set of six-axis robot arm welding seam tracking experiment platform based on Halcon machine vision library to resolve the curve seam tracking issue. Design/methodology/approach Robot-based and image coordinate systems are converted based on the mathematical model of the three-dimensional measurement of structured light vision and conversion relations between robot-based and camera coordinate systems. An object tracking algorithm via weighted local cosine similarity is adopted to detect the seam feature points to prevent effectively the interference from arc and spatter. This algorithm models the target state variable and corresponding observation vector within the Bayes framework and finds the optimal region with highest similarity to the image-selected modules using cosine similarity. Findings The paper tests the approach and the experimental results show that using metal inert-gas (MIG) welding with maximum welding current of 200A can achieve real-time accurate curve seam tracking under strong arc light and splash. Minimal distance between laser stripe and welding molten pool can reach 15 mm, and sensor sampling frequency can reach 50 Hz. Originality/value Designing a set of six-axis robot arm welding seam tracking experiment platform with a system of structured light sensor based on Halcon machine vision library; and adding an object tracking algorithm to seam tracking system to detect image feature points. By this technology, this system can track the curve seam while welding.

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Xiang, Hui Yu, Baoan Han, Jia Jun Huang und Zhe Li. „Surface Reconstruction of Stamping Parts Based on Binocular Stereo Vision“. Applied Mechanics and Materials 415 (September 2013): 314–17. http://dx.doi.org/10.4028/www.scientific.net/amm.415.314.

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In order to realize the 3D reconstruction of stamping parts surface, this paper based on binocular stereo vision principle firstly introduces the model of the binocular cameras. Internal and external parameters of camera can be obtained by binocular calibration, taking the printed circle grid centers which are on the stamping parts as feature points, and then using the disparity image obtained by HALCON to reconstruct 3D information of the feature points. Finally, use Matlab to plot out the scatter diagram of feature points and the fitting curved surface diagram.

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ARSHED, MUHAMMAD JEFTE C., und GRECEBIO JONATHAN D. ALEJANDRO. „A new Philippine endemic species and new records of Lasianthus (Lasiantheae, Rubiaceae)“. Phytotaxa 288, Nr. 3 (16.12.2016): 296. http://dx.doi.org/10.11646/phytotaxa.288.3.12.

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A new species named as Lasianthus halconensis from Mt. Halcon, Mindoro, Philippines is described and illustrated. This species is easily distinguished from the other Lasianthus by having strigose indumentum on branches, abaxial leaf surface, petioles and calyx; lanceolate leaves, cuneate at base; obconical calyx and drupes with 8 pyrenes. This species is allied to L. obliquinervis and L. chrysoneurus but differs in stem, leaf and calyx indumentum, leaf and calyx shape and the absence of bracts. Moreover, three new records of Lasianthus in the country are reported including their diagnosis.

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HSU, HAO WEI C., DENMARC R. ARANAS, GRECEBIO JONATHAN D. ALEJANDRO und SIGRID LIEDE-SCHUMANN. „A new species of Argostemma (Rubiaceae) with free stamens in star-shaped corolla from the Philippines“. Phytotaxa 437, Nr. 2 (25.03.2020): 113–17. http://dx.doi.org/10.11646/phytotaxa.437.2.7.

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Argostemma separatum, a new species with free stamens in star-shaped corolla from Mt. Halcon Oriental Mindoro, Philippines is here described and compared with Argostemma diversifolium, the only species of the genus with this type of flower. This species is distinct from A. diversifolium by its indumentum on stem, leaf blades and calyx, smaller leaf blades, fewer flowered inflorescences, shape of stipule and calyx, red tips on corolla lobes, and color of anthers. Based on the recent IUCN categories, the conservation status of A. separatum is Data Deficient (DD) since it was only collected at the type locality.

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Wang, Jiwu, Haibao Luo und Pengfei Yu. „Study on Detection of Nests on Pylon from Overhead View Based on Halcon“. Proceedings of International Conference on Artificial Life and Robotics 23 (02.02.2018): 105–8. http://dx.doi.org/10.5954/icarob.2018.gs4-1.

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Megdiche, Riadh, und Dieter Schnurpfeil. „Über den hemmenden Einfluß des Epoxids und seiner Folgeprodukte auf die Halcon-Reaktion“. Zeitschrift für Chemie 22, Nr. 1 (31.08.2010): 26–27. http://dx.doi.org/10.1002/zfch.19820220107.

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Mueller, M., und T. Voegtle. „DETERMINATION OF STEERING WHEEL ANGLES DURING CAR ALIGNMENT BY IMAGE ANALYSIS METHODS“. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (15.06.2016): 77–83. http://dx.doi.org/10.5194/isprsarchives-xli-b5-77-2016.

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Optical systems for automatic visual inspections are of increasing importance in the field of automation in the industrial domain. A new application is the determination of steering wheel angles during wheel track setting of the final inspection of car manufacturing. The camera has to be positioned outside the car to avoid interruptions of the processes and therefore, oblique images of the steering wheel must be acquired. Three different approaches of computer vision are considered in this paper, i.e. a 2D shape-based matching (by means of a plane to plane rectification of the oblique images and detection of a shape model with a particular rotation), a 3D shape-based matching approach (by means of a series of different perspectives of the spatial shape of the steering wheel derived from a CAD design model) and a point-to-point matching (by means of the extraction of significant elements (e.g. multifunctional buttons) of a steering wheel and a pairwise connection of these points to straight lines). The HALCON system (HALCON, 2016) was used for all software developments and necessary adaptions. As reference a mechanical balance with an accuracy of 0.1° was used. The quality assessment was based on two different approaches, a laboratory test and a test during production process. In the laboratory a standard deviation of ±0.035° (2D shape-based matching), ±0.12° (3D approach) and ±0.029° (point-to-point matching) could be obtained. The field test of 291 measurements (27 cars with varying poses and angles of the steering wheel) results in a detection rate of 100% and ±0.48° (2D matching) and ±0.24° (point-to-point matching). Both methods also fulfil the request of real time processing (three measurements per second).

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Mueller, M., und T. Voegtle. „DETERMINATION OF STEERING WHEEL ANGLES DURING CAR ALIGNMENT BY IMAGE ANALYSIS METHODS“. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B5 (15.06.2016): 77–83. http://dx.doi.org/10.5194/isprs-archives-xli-b5-77-2016.

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Optical systems for automatic visual inspections are of increasing importance in the field of automation in the industrial domain. A new application is the determination of steering wheel angles during wheel track setting of the final inspection of car manufacturing. The camera has to be positioned outside the car to avoid interruptions of the processes and therefore, oblique images of the steering wheel must be acquired. Three different approaches of computer vision are considered in this paper, i.e. a 2D shape-based matching (by means of a plane to plane rectification of the oblique images and detection of a shape model with a particular rotation), a 3D shape-based matching approach (by means of a series of different perspectives of the spatial shape of the steering wheel derived from a CAD design model) and a point-to-point matching (by means of the extraction of significant elements (e.g. multifunctional buttons) of a steering wheel and a pairwise connection of these points to straight lines). The HALCON system (HALCON, 2016) was used for all software developments and necessary adaptions. As reference a mechanical balance with an accuracy of 0.1° was used. The quality assessment was based on two different approaches, a laboratory test and a test during production process. In the laboratory a standard deviation of ±0.035° (2D shape-based matching), ±0.12° (3D approach) and ±0.029° (point-to-point matching) could be obtained. The field test of 291 measurements (27 cars with varying poses and angles of the steering wheel) results in a detection rate of 100% and ±0.48° (2D matching) and ±0.24° (point-to-point matching). Both methods also fulfil the request of real time processing (three measurements per second).

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Tang, Rui Yin, Zhou Mo Zeng und Peng Fei Li. „Computer Hard Disk Planeness Vision Measurement System Calibration Based on Light Plane Constraint“. Applied Mechanics and Materials 475-476 (Dezember 2013): 63–67. http://dx.doi.org/10.4028/www.scientific.net/amm.475-476.63.

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This paper proposed a calibration method of sheet-of-light vision measurement sensor based on light plane constraint. Through capturing 12 images of different direction from homemade circular calibration target, the center of the circle and the light stripe is extracted based on Halcon platform of Germany. The experimental results obtained the intrinsic parameters, extrinsic parameters and radial distortion coefficient of the nonlinear model. At the same time the light plane constraint equation is got based on PCA plane fitting method. The results show that the calibration method is simple and reliable, and the method does not need any auxiliary adjustment. The work laid the better foundation for hard disk planeness vision measurement.

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Hao, Qing Dong, Fang Yi Li und Bao Long Gong. „Simulation and Experimental Study of Ultrasonic Cleaning Based on Multi-Field Coupling“. Advanced Materials Research 816-817 (September 2013): 1270–73. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.1270.

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In current Ultrasonic Cleaning simulation, high calculation complexity and low precision is a big problem. The disadvantages of reflecting the sound field characteristics inaccurately and quantitative difficulties exist in the sound field measurements. Firstly, the two-dimensional and three-dimensional models of Ultrasonic Cleaning are established in COMSOL Multiphysics and corresponding cleaning effects under different frequencies are simulated, then the frequencies of cleaning machine suitable for remanufactured components are determined. Finally, by means of staining method, sound field distribution on different work cross-sections in the Ultrasonic Cleaning process is studied. Halcon and Matlab are used in our investigation to deal with the experiment results in order to provide a new idea on the measurement of the sound field of Ultrasonic Cleaning.

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Sahara, Gita, Darwin Darwin und Indera Sakti Nasution. „Pendugaan Massa Dan Volume Pada Buah Alpukat Dan Jeruk Menggunakan Pengolahan Citra Digital“. Jurnal Ilmiah Mahasiswa Pertanian 4, Nr. 3 (01.08.2019): 135–44. http://dx.doi.org/10.17969/jimfp.v4i3.11498.

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Abstrak. Penelitian ini bertujuan untuk menduga massa dan volume buah alpukat dan jeruk menggunakan pengolahan citra digital. Pada penelitian ini terdapat tiga ukuran pada buah alpukat dan jeruk yaitu: besar (A), sedang (B) dan kecil (C), dengan menggunakan sampel buah masing-masing sebanyak 30 buah untuk data training dan 15 buah untuk data testing. Pengambilan citra menggunakan kamera Charge Coupled Device (CCD) dalam format bitmap. Data citra diolah menggunakan Software Halcon MVTecversi 11(demo) dengan memasukkan algoritma metode bentuk buah (eccentricity) dan algoritma metode irisan. Hasil penelitian pada pendugaan massa dan volume buah alpukat menggunakan metode eccentricity diperoleh tingkat rata-rata akurasi masing-masing sebesar 94,12% dan 92,85%. Sedangkan menggunakan metode irisan diperoleh tingkat rata-rata akurasi masa dan volume masing-masing sebesar 93,60% dan 94,00%. Pendugaan massa dan volume buah jeruk menggunakan eccentricity diperoleh tingkat rata-rata akurasi masing-masing sebesar 96,58% dan 93,08%. Sedangkan menggunakan metode irisan diperoleh tingkat rata-rata akurasi masa dan volume masing-masing sebesar 92,54% dan 90,30%.Prediction of Mass and Volume of Avocado and Orange Fruits Using Digital Image ProcessingAbstract. This study aims to estimate the mass and volume of avocados and oranges using digital image processing. In this study there were three sizes of avocados and oranges, such as: large (A), medium (B) and small (C), by using 30 fruit samples of each fruit for training data and 15 fruits for testing data. The image was captured using a camera's Charge Coupled Device (CCD) in a bitmap format. Image data was processed using Halcon MVTec version 11 (demo) software using eccentricity and slice method algorithms. The results of the study on estimating the mass and volume of avocados using the eccentricity method obtained an average level of accuracy were 94.12% and 92.85%. While by using the slice method, the average mass and volume accuracy rates were 93.60% and 94.00%. Estimating the mass and volume of oranges using eccentricity method obtained an accuracy average of 96.58% and 93.08%. While by using the slice method, the average level of accuracy and volume were 92.54% and 90.30% respectively.

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Mimoun, Hubert. „Do metal peroxides as homolytic and heterolytic oxidative reagents. Mechanism of the halcon epoxidation process“. Catalysis Today 1, Nr. 3 (Januar 1987): 281–95. http://dx.doi.org/10.1016/0920-5861(87)80012-3.

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Li, Guang, Chen Chen Cao, Jie Ge und Guang Chen Li. „Defects Detection of Pharmaceutical Blister Packaging Based on Shape Template Matching“. Applied Mechanics and Materials 731 (Januar 2015): 426–29. http://dx.doi.org/10.4028/www.scientific.net/amm.731.426.

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In machine vision defects detection of pharmaceutical blister packaging, the traditional defects detection algorithms always do the binary image processing and edge feature extraction and other operations, and then locate the analysis image through these features. These operations are very tedious and inflexible. In this paper, the shape template matching algorithm is applied to pharmaceutical blister packaging defects detection. The algorithm can determine whether there is a positioning region of the sheet or pieces missing through search algorithm to locate the template image and comparing the difference of gray value between the detection region and the template region. This paper packaged the software of pharmaceutical blister packaging machine vision defects detection via the professional image processing library of Halcon and visual programming software Visual C++. Detection case demonstrates the feasibility and effectiveness of detection algorithm and system.

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Dutson, Guy C. L., Tom D. Evans, Thomas M. Brooks, Desiderio C. Asane, Robert J. Timmins und Angela Toledo. „Conservation status of birds on Mindoro, Philippines“. Bird Conservation International 2, Nr. 4 (Dezember 1992): 303–25. http://dx.doi.org/10.1017/s0959270900002513.

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SummaryFour weeks of fieldwork in the forests of Mindoro, Philippines, in 1991 has elucidated the status of the six bird species endemic to the island. Of these, Ducula mindorensis and Otus mindorensis are high-altitude species with restricted ranges and in need of active conservation in the medium term. Three of the four lowland species, Gallicolumba platenae, Centropus steerü and Penelopides mindorensis are under immediate threat of extinction through forest clearance and fragmentation, while the fourth, Dicaeum retrocinctum, s i not under immediate threat but is certainly at risk of extinction in the long term. Whilst deforestation is an enormous problem across the entire Philippines, Mindoro is the smallest centre of endemism with the least forest cover after the Sulu Islands. Extinctions are believed inevitable within the next 10 years unless concerted action is urgently taken. The Halcon range must receive attention in order to conserve the montane species, but more urgent by far is the preservation of lowland forest remnants, concentrating on central-west Mindoro.

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Gong und Wang. „Research on Moving Target Tracking Based on FDRIG Optical Flow“. Symmetry 11, Nr. 9 (04.09.2019): 1122. http://dx.doi.org/10.3390/sym11091122.

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Aiming at the problem of moving target recognition, a moving target tracking model based on FDRIG optical flow is proposed. First, the optical flow equation was analyzed from the theory of optical flow. Then, with the energy functional minimization, the FDRIG optical flow technique was proposed. Taking a road section of a university campus as an experimental section, 30 vehicle motion sequence images were considered as objects to form a vehicle motion sequence image with a complex background. The proposed FDRIG optical flow was used to calculate the vehicle motion optical flow field by the Halcon software. Comparable with the classic Horn and Schunck (HS) and Lucas and Kande (LK) optical flow algorithm, the monitoring results proved that the FDRIG optical flow was highly precise and fast when tracking a moving target. The Ettlinger Tor traffic scene was then taken as the second experimental object; FDRIG optical flow was used to analyze vehicle motion. The superior performance of the FDRIG optical flow was further verified. The whole research work shows that FDRIG optical flow has good performance and speed in tracking moving targets and can be used to monitor complex target motion information in real-time.

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Shen, Chuanxing, Yongjian Zhu und Chi Wang. „Research on Character Computer Intelligent Recognition of Automobile Front Bar Bracket Based on Machine Vision“. Journal of Physics: Conference Series 2083, Nr. 4 (01.11.2021): 042041. http://dx.doi.org/10.1088/1742-6596/2083/4/042041.

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Abstract Aiming at the problem that the characters in the superimposed character area on the surface of the front bumper bracket of the car are difficult to recognize, a machine vision-based automobile front bumper bracket character recognition method is proposed, use Python, OpenCV and Halcon computer vision library for software system design. For eight images collected from different angles of light source directions, an innovative method of polynomial fitting gray value can reducethe uneven illumination of the images. The photometric stereo algorithm is used to obtain a high-contrast character image, and the separation of the two types of characters is simultaneously achieved. After the image filtering, opening and closing processes canremove background interference, use a morphological improvement algorithm based on scanning algorithm to complete character positioning, and then the improved algorithm of projection dichotomy based on the connected domain size is used to complete the character segmentation, and finally the support vector machine is used for character feature recognition. The experimental results claim that these methods can quickly separate superimposed characters and complete the recognition of non-color difference convex characters and inkjet characters, and the average recognition accuracy rate is over 96%, which meets the expected recognition requirements.

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Mimoun, Hubert, Michel Mignard, Philippe Brechot und Lucien Saussine. „Selective epoxidation of olefins by oxo[N-(2-oxidophenyl)salicylidenaminato]vanadium(V) alkylperoxides. On the mechanism of the Halcon epoxidation process“. Journal of the American Chemical Society 108, Nr. 13 (Juni 1986): 3711–18. http://dx.doi.org/10.1021/ja00273a027.

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Alma, Azizah, Ichwana Ichwana und Indera Sakti Nasution. „Sistem Akuisisi Gambar Menggunakan Kamera 3D Kinect V2 Untuk Memonitoring Ketinggian Tanaman Pakcoy (Brassica Rapa L.)“. Jurnal Ilmiah Mahasiswa Pertanian 6, Nr. 3 (01.08.2021): 147–54. http://dx.doi.org/10.17969/jimfp.v6i3.17540.

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Abstrak. Tinggi tanaman merupakan salah satu parameter utama pertumbuhan tanaman pakcoy yang dibudidaya secara hidroponik. Oleh karena itu perlu dilakukan pengukuran tinggi tanaman dimana membutuhkan waktu relatif lama jika di ukur secara manual. Maka solusi dari permasalahan ini adalah pengukuran otomatis menggunakan pengolahan citra utuk menggantikan tenaga manusia. Tujuan dari penelitian ini adalah merancang dan memonitoring ketinggian tanaman pakcoy sistem hidroponik menggunakan teknologi pengolahan citra dan kamera 3D Kinect v2 terintegrasi dengan komputer. Penelitian ini terdapat dua pengukuran yaitu dengan cara manual menggunakan penggaris, dan pengambilan citra menggunakan kinect v2 dengan resolusi kamera 1920 x 1080 piksel, Sampel tanaman pakcoy yang digunakan pada penelitian ini pada umur 2,3 dan 4 minggu sebanyak 60 sampel. Pengambilan citra dilakukan pada sore hari yaitu dimulai pada jam 15.00-17.00. Data citra depth yang dihasilkan diolah menggunakan software Halcon HDevelop 20.05 Student Edition dengan memasukkan algoritma dan diidentifikasi menggunakan metode Distance Transform dan Watersheds Segmentation berfungsi untuk memisahkan antara objek dengan latar belakang (background) dan membuat batas antara satu objek dengan objek lainnya yang bersentuhan ataupun berhimpit, untuk menentukan jarak tiap-tiap daun yang terdeteksi dengan kamera kinect v2 digunakan metode histogram pada pengolahan citra. Berdasarkan hasil pengujian menggunakan teknologi pengolahan citra digital sensor kinect v2 telah terbukti mampu untuk mengumpulkan data tinggi tanaman pakcoy. Persentase akurasi pada pengukuran tinggi tanaman secara actual dan kinect v2 dengan metode Root mean squre error (RMSE) yaitu 2 dengan kriteria baik, sedangkan menggunakan metode mean absolute percentage error (MAPE) yaitu sebesar 93%.Image Acquisition System Using Kinect V2 3D Camera for Monitoring Pakcoy (Brassica Rapa L.) Plant HeightAbstract. Plant height is one of the main parameters for the growth of pakcoy plants that are cultivated hydroponically. Therefore it is necessary to measure the height of the plant which takes a relatively long time if it is actually measured. So the solution to this problem is automatic measurement using image processing to replace human labor. The purpose of this research is to design and monitor the height of the hydroponic system pakcoy plant using image processing technology and a 3D Kinect v2 camera integrated with a computer. In this study, there are two measurements, namely manually using a ruler, and image taking using kinect v2 with a camera resolution of 1920 x 1080 pixels. Pakcoy plant samples used in this study at the age of 2,3 and 4 weeks were 60 samples. Image retrieval is carried out in the afternoon, starting at 15.00-17.00. The resulting depth image data is processed using Halcon HDevelop 20.05 Student Edition software by entering an algorithm and identified using the Distance Transform and Watersheds Segmentation method, which functions to separate objects from the background and create boundaries between objects that touch or coincide. To determine the distance of each leaf detected by the kinect v2 camera, the histogram method was used in image processing. Based on the test results using digital image processing technology, the kinect v2 sensor has been proven to be able to collect data on the height of pakcoy plants. The percentage of accuracy in the actual measurement of plant height and kinect v2 using the Root mean squre error (RMSE) method is 2 with good criteria, while using the mean absolute percentage error (MAPE) method, which is 93%.

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Klienkov, Alexey V., und Alexander A. Petukhov. „Obtaining molybdenyl glycolate using ethanol as a salting out solvent“. Butlerov Communications 59, Nr. 9 (30.09.2019): 66–70. http://dx.doi.org/10.37952/roi-jbc-01/19-59-9-66.

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The global production of propylene oxide is more than 8 million tons/year and is increasing by more than 5% annually. Almost all domestic propylene oxide (72 thousand tons/year) is produced at PJSC Nizhnekamskneftekhim (Russia) according to one of the variants of the Halcon process – epoxidation of propylene with ethylbenzene hydroperoxide (HPEB) in the presence of a molybdenum catalyst. One of the most important tasks arising in improving the process for the joint production of styrene and propylene oxide at PJSC Nizhnekamskneftekhim (Russia) is the search and development of new catalysts and catalytic systems, one of the stages of this process – the epoxidation of propylene with HPEB. The complex molybdenum catalyst used in the production of propylene oxide, having high activity and selectivity, has several disadvantages, namely: low dissolved molybdenum content, high consumption of ethylbenzene hydroperoxide for its production, and instability during storage. Thus, the problem of obtaining a catalyst with a higher content of dissolved molybdenum and increasing the stability of the catalytic complex, i.e. development of new catalytic systems with the best technological and technical and economic indicators. An analysis of the scientific and technical literature and patent publications showed that in the synthesis of a complex molybdenum catalyst, various molybdenum compounds of both organic and inorganic nature can be used. During the study, molybdenum-containing solutions based on ammonium paramolybdate and monoethylene glycol were tested, distillation distillation products prepared by distilling off excess monoethylene glycol by strengthening under vacuum. Molybdenyl glycolate was isolated by salting out with ethanol from a distillation bottoms product.

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Crow, Daniel. „HalClon“. ACM SIGCHI Bulletin 27, Nr. 2 (April 1995): 40–41. http://dx.doi.org/10.1145/202511.202521.

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Edwards, Karen. „HALCYON“. Milton Quarterly 41, Nr. 2 (Mai 2007): 79–82. http://dx.doi.org/10.1111/j.1094-348x.2007.00160_1.x.

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Saint Eloi, Rodney, und Marie-Ovide Gina Dorcely. „Untitled/Halcyon“. Callaloo 30, Nr. 1 (2007): 343–44. http://dx.doi.org/10.1353/cal.2007.0171.

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Schwab, I. R. „Halcyon days“. British Journal of Ophthalmology 88, Nr. 5 (01.05.2004): 613. http://dx.doi.org/10.1136/bjo.2004.045492.

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&NA;. „???Halcion??? update“. Inpharma Weekly &NA;, Nr. 810 (Oktober 1991): 22. http://dx.doi.org/10.2165/00128413-199108100-00058.

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Sharpe, D. R., und H. A. J. Russell. „A revised depositional setting for Halton sediments in the Oak Ridges Moraine area, Ontario“. Canadian Journal of Earth Sciences 53, Nr. 3 (März 2016): 281–303. http://dx.doi.org/10.1139/cjes-2015-0150.

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Outcrop and continuous core descriptions, high-resolution seismic profiling, and downhole geophysical data are integrated with detailed mapping to update sedimentary and stratigraphic frameworks for Halton sediment, a complex mud-rich lithofacies succession. Halton sediment has a gradational transition from underlying Oak Ridges Moraine (ORM) sediment and can abruptly overlie Newmarket Till. Halton strata thin and fine upwards from ORM sand and gravel to graded sand, silt, and clay rhythmites, with muddy diamicton and sand and gravel interbeds. These strata fill basin lows and drape ORM sediment lobes and Newmarket Till drumlins. These distinct sedimentary units are here informally referred to as Halton formation. Formal Halton Till is a proposed subunit of Halton formation, a clay-rich diamicton mapped from Niagara Peninsula to ORM and eastward. Halton Till has traditionally been inferred to represent a late, climatically induced readvance of grounded ice from Lake Ontario basin, which deposited drumlinized till. Halton sedimentary architecture and facies are interpreted as deposition in an ice-marginal or subglacial lake bounded by Niagara Escarpment, ORM, and grounding line oscillation of a semi-buoyant ice shelf or ice lid over Lake Ontario. Large volumes of transported mud are distal equivalents of ORM high-energy gravelly sand deposits to the east. Glaciolacustrine sedimentation is indicated by mud-rich texture and laminations. Clay–silt rhythmites, diamicton interbeds, and intraclasts indicate ponding, debris flow, and periodic ice loading. Halton depositional model may apply to other muddy diamictons in Great Lakes basins. Halton formation facies are not compatible with proposed grounded ice stream events in Lake Ontario basin.

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