Relevant bibliographies by topics / Decalibration

Academic literature on the topic 'Decalibration'

Author: Grafiati
Published: 10 March 2023

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Journal articles on the topic "Decalibration"

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Jacak, Monika, Damian Melniczuk, Janusz Jacak, Ireneusz Jóźwiak, Jacek Gruber, and Piotr Jóźwiak. "Stability assessment of QKD procedures in commercial quantum cryptography systems versus quality of dark channel." International Journal of Quantum Information 13, no. 08 (December 2015): 1550064. http://dx.doi.org/10.1142/s0219749915500641.

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In order to assess the susceptibility of the quantum key distribution (QKD) systems to the hacking attack including simultaneous and frequent system self-decalibrations, we analyze the stability of the QKD transmission organized in two commercially available systems. The first one employs non-entangled photons as flying qubits in the dark quantum channel for communication whereas the second one utilizes the entangled photon pairs to secretly share the cryptographic key. Applying standard methods of the statistical data analysis to the characteristic indicators of the quality of the QKD communication (the raw key exchange rate [RKER] and the quantum bit error rate [QBER]), we have estimated the pace of the self-decalibration of both systems and the repeatability rate in the case of controlled worsening of the dark channel quality.
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Muhovič, Jon, and Janez Perš. "Correcting Decalibration of Stereo Cameras in Self-Driving Vehicles." Sensors 20, no. 11 (June 7, 2020): 3241. http://dx.doi.org/10.3390/s20113241.

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Camera systems in autonomous vehicles are subject to various sources of anticipated and unanticipated mechanical stress (vibration, rough handling, collisions) in real-world conditions. Even moderate changes in camera geometry due to mechanical stress decalibrate multi-camera systems and corrupt downstream applications like depth perception. We propose an on-the-fly stereo recalibration method applicable in real-world autonomous vehicles. The method is comprised of two parts. First, in optimization step, external camera parameters are optimized with the goal to maximise the amount of recovered depth pixels. In the second step, external sensor is used to adjust the scaling of the optimized camera model. The method is lightweight and fast enough to run in parallel with stereo estimation, thus allowing an on-the-fly recalibration. Our extensive experimental analysis shows that our method achieves stereo reconstruction better or on par with manual calibration. If our method is used on a sequence of images, the quality of calibration can be improved even further.
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O'Reilly, P. G. "Detection of sensor decalibration using the asymptotic local approach." Electronics Letters 34, no. 21 (1998): 2022. http://dx.doi.org/10.1049/el:19981401.

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Vitanza, C., and T. E. Stien. "Assessment of fuel thermocouple decalibration during in-pile service." Journal of Nuclear Materials 139, no. 1 (May 1986): 11–18. http://dx.doi.org/10.1016/0022-3115(86)90158-3.

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Pinchukov, V. V., E. V. Shmatko, A. D. Bogachev, and A. Yu Poroykov. "Optimization of the stereo system calibration parameters for photogrammetric measurements in the conditions of field experiments." Journal of Physics: Conference Series 2127, no. 1 (November 1, 2021): 012029. http://dx.doi.org/10.1088/1742-6596/2127/1/012029.

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Abstract Optical methods for deformation diagnostics and surface shape measurement are often used in scientific research and industry. Most of these methods are based on the triangulation of a set of two-dimensional points from different images corresponding to the three-dimensional points of an object in space. Triangulation is based on the stereo system calibration parameters, which are determined before the experiment. Measurements during conditions with increased vibration loads can lead to a change in the relative position of the cameras of the stereo system (decalibration). This leads to a change in the actual calibration parameters and an increase in the measurement error. This work aims to solve the problem of increasing the measurement accuracy of the photogrammetric method in the case of high vibration loads. For this, it is proposed to use an optimization algorithm for calibration parameters to minimize the reprojection error of three-dimensional points calculated using triangulation. The paper presents the results of a computer simulation of decalibration of a video camera stereo system, an algorithm for optimizing the external parameters of a stereo system, and an assessment of its performance.
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Malhotra, Ashish, and Biao Huang. "Detection of abrupt change and applications in sensor decalibration monitoring." ISA Transactions 41, no. 2 (April 2002): 155–66. http://dx.doi.org/10.1016/s0019-0578(07)60075-5.

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HOWARD, KATHRYN M. "Breaking in and spinning out: Repetition and decalibration in Thai children’s play genres." Language in Society 38, no. 3 (June 2009): 339–63. http://dx.doi.org/10.1017/s0047404509090526.

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ABSTRACTChildren’s humorous play is a cultural activity with its own particular aesthetic – an aesthetic in which highly creative, incongruent, and unexpected speech and action are valorized, appreciated, and rewarded. Drawing on Bauman’s concept of calibration, the adjustments by which speakers align their intertextual utterances to new contexts and purposes, this paper argues that an aesthetic of decalibration is at work in children’s metalinguistic and metapragmatic language play. Children capitalize upon linguistic and pragmatic ambiguity to breach expectations, drawing on complex linguistic, contextual and pragmatic knowledge to create maximally humorous language play performances. Through close analysis of videotaped interactions from a larger ethnographic, discourse analytic study of northern Thai children’s everyday lives, this article examines how younger children are socialized into these practices of language play through peripheral participation in multi-age play groups, showing that the repetitive poetic structure and predictability of the play genres constitute jumping-off and breaking-in points for language play. (Calibration, repetition, children’s language, play, language socialization, Thai, humor)1
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Rotter, Pawel, Maciej Klemiato, and Pawel Skruch. "Automatic Calibration of a LiDAR–Camera System Based on Instance Segmentation." Remote Sensing 14, no. 11 (May 25, 2022): 2531. http://dx.doi.org/10.3390/rs14112531.

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In this article, we propose a method for automatic calibration of a LiDAR–camera system, which can be used in autonomous cars. This approach does not require any calibration pattern, as calibration is only based on real traffic scenes observed by sensors; the results of camera image segmentation are compared with scanning LiDAR depth data. The proposed algorithm superimposes the edges of objects segmented by the Mask-RCNN network with depth discontinuities. The method can run in the background during driving, and it can automatically detect decalibration and correct corresponding rotation matrices in an online and near real-time mode. Experiments on the KITTI dataset demonstrated that, for input data of moderate quality, the algorithm could calculate and correct rotation matrices with an average accuracy of 0.23°.
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Wit Pietrzak. "Decalibrating the Language. J. H. Prynne’s Biting the Air." Miscelánea: A Journal of English and American Studies 52 (December 23, 2015): 103–18. http://dx.doi.org/10.26754/ojs_misc/mj.20157208.

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The article focuses on J.H. Prynne’s 2003 volume Biting the Air. I seek to explore the modes of reconstitution of language that Prynne shows to be enslaved in the various discourses of modernity. The idea of enslaving discourse is shown to be an unacknowledged aspect of modernity on the basis of Don DeLillo’s Cosmopolis and Zbigniew Herbert’s “Report from the Besieged City”, both of which may be seen as illustrations of the hegemony of linguistic enslavement that Prynne struggles against in his poetry. Despite the difference of socio-linguistic and temporal context, both DeLillo and Herbert show that language, as Prynne implies in the ending of Biting the Air, is a “calibrated” mechanism of oppression that, unbeknownst to most people, keeps man fixed within the field of binary rhetoric. In response to that situation, Prynne’s poem is demonstrated to refashion the idiom by emphasizing the multiple process of meaning creation. It is in such decalibration of language that a path may be located beyond the reified linguistic praxis.
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Wang, Xing, Xuejun Liu, Ziran Wang, Ruichao Li, and Yiguang Wu. "SVM+KF Target Tracking Strategy Using the Signal Strength in Wireless Sensor Networks." Sensors 20, no. 14 (July 9, 2020): 3832. http://dx.doi.org/10.3390/s20143832.

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Target Tracking (TT) is a fundamental application of wireless sensor networks. TT based on received signal strength indication (RSSI) is by far the cheapest and simplest approach, but suffers from a low stability and precision owing to multiple paths, occlusions, and decalibration effects. To address this problem, we propose an innovative TT algorithm, known as the SVM+KF method, which combines the support vector machine (SVM) and an improved Kalman filter (KF). We first use the SVM to obtain an initial estimate of the target’s position based on the RSSI. This enhances the ability of our algorithm to process nonlinear data. We then apply an improved KF to modify this estimated position. Our improved KF adds the threshold value of the innovation update in the traditional KF. This value changes dynamically according to the target speed and network parameters to ensure the stability of the results. Simulations and real experiments in different scenarios demonstrate that our algorithm provides a superior tracking accuracy and stability compared to similar algorithms.
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Dissertations / Theses on the topic "Decalibration"

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Gil, Gustavo. "Safety systems for motorcycles: Remote sensing from tilting vehicles." Doctoral thesis, 2018. http://hdl.handle.net/2158/1125788.

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This research work is organized in two parts. The first one addresses how to analyze the interdisciplinary problem of motorcycle safety, in order to maximize the positive impact of future motorcycle safety systems through a new methodological tool, which it was developed in this work. The second part describes a remote sensor, developed in this work, aimed at avoiding or mitigating the motorcycle crashes, as these were found necessary in the first part. Therefore, this research focused on the requirements to accomplish a conceptual safety functionality, called Motorcycle Autonomous Emergency Braking (M-AEB). The reason for this is because this safety system does not exist for motorcycles. The specifications behind the M-AEB functionality were taken from the outcomes of a prior EU research project called ABRAM (Autonomous BRAking for Motorcycles).
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Conference papers on the topic "Decalibration"

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Pinchukov, Vladislav, Ekaterina Shmatko, Anton Poroykov, and Artem Bogachev. "Computer and Physical Modeling for Verification of the Stereo System Calibration Parameters Optimization Results." In 31th International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/graphicon-2021-3027-406-412.

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Close-range photogrammetry is widely used to measure surface shapes and diagnose deformation. Usually, a stereo system of video cameras is used to register images of the measured object from several different angles. The surface shape is determined by triangulating a set of 2D points from these images. Triangulation uses the stereo system calibration parameters, which are determined before the experiment. Measurements during conditions with increased vibration loads can lead to a change in the relative position of the cameras of the stereo system (decalibration). This leads to a change in the actual calibration parameters and an increase in the measurement error. The decalibration problem can be solved using multidimensional optimization algorithms. To verify their calculation's results it is proposed to use a computer and physical modeling of decalibration of a video camera stereo system in laboratory conditions. The paper presents the implementation of the optimizing algorithm for the external parameters of a stereo system and the results of its performance during the experimental investigations.
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Sivov, Nikita Yu, Vladislav V. Pinchukov, Anton Yu Poroykov, and Ekaterina V. Shmatko. "Computer Simulation of the Intrinsic Parameters Decalibration for the Stereo System of Video Cameras." In 2022 6th International Scientific Conference on Information, Control, and Communication Technologies (ICCT). IEEE, 2022. http://dx.doi.org/10.1109/icct56057.2022.9976747.

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