Results 251 to 260 of about 68,558 (310)
Advanced Robotics Research, EarlyView.This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi +2 more
wiley +1 more source
Motion Compensation in Radiotherapy
Critical Reviews™ in Biomedical Engineering, 2012 Image-guided radiotherapy (IGRT) has helped to dramatically reduce safety margins compensating for positioning uncertainties in radiotherapy. A remaining issue posing problems for photon radiotherapy (RT), but even more so for particle RT, is target motion during treatment delivery.
Guckenberger M. +3 more
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Motion compensation of motion vectors
Proceedings., International Conference on Image Processing, 2002Motion compensation of image data has long been used for video compression. "Meta-motion" compensation, or motion compensation of motion vectors is presented as a new approach to data compression useful in very low bit rate (VLB) applications. Whereas present motion coding simply takes advantage of temporal redundancies among images, this new ...
J. Yeh +2 more
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Heart motion simulator for motion compensation
2011 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2011A robotic heart motion simulator (HMS) is developed at DLR (German Aerospace Center) to accurately simulate real translational motions of a mechanically stabilized beating heart in a lab environment. This simulator is part of the DLR scenario for motion compensation on the beating heart.
Iskakov, Renat +2 more
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IEEE Transactions on Communications, 1987
In an earlier paper, an extension of the pel recursive techniques of Netravali and Robbins [2] and Cafforio and Rocca [3] was introduced. Here a method is provided to realize the algorithm in hardware, with some approximations. The prediction error distribution allows the use of quantized variables to a lookup table of reasonable size. The algorithm is
D. Walker, Kamisetty Ramamohan Rao
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In an earlier paper, an extension of the pel recursive techniques of Netravali and Robbins [2] and Cafforio and Rocca [3] was introduced. Here a method is provided to realize the algorithm in hardware, with some approximations. The prediction error distribution allows the use of quantized variables to a lookup table of reasonable size. The algorithm is
D. Walker, Kamisetty Ramamohan Rao
openaire +1 more source
Motion Compensated Coder For Videoconferencing
SPIE Proceedings, 1985A codec for videoconferencing purposes [8-12,31] is proposed based on the one-at-a-time search (OTS) motion compensation algorithm [1,30-31]. The coder is implemented in an interframe hybrid mode using the C-matrix transfsorm (CMT) [13-15]. The motion estimation algorithm employed is simple and reduces temporal redundancy while the CMT reduces spatial ...
Ram Srinivasan, Kamisetty Ramamohan Rao
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Hybrid Coders with Motion Compensation
Multidimensional Systems and Signal Processing, 1992This paper investigates analytically the effects of motion compensation in a coder based on the observed properties of motion-compensated frame difference (MCFD) signals. The AR(1) processes with a given pixel-to-pixel autocorrelation coefficient will be used to model the intraframe images.
Chi-Fa Chen, K. K. Pang
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Motion compensation and multiresolution coding
Signal Processing: Image Communication, 1994Abstract Multiresolution techniques have become more and more appealing in current image coding. Image multispectral representation produces many important features such as spectral shaping of coding noise according to human eye perception, good image energy compaction, coder tuning with respect to any band characteristics, and allows for multilevel ...
Cafforio, C. +4 more
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Motion compensated vector quantization
ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005Two algorithms combining vector quantization with motion compensation for data reduction are presented. The vector quantization technique used in the algorithms is a mean residual vector quantizer (MRVQ) with 8-bit mean, and the motion compensation technique is a simple block matching algorithm.
Rey R. Furner +2 more
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Analysis of motion-compensated temporal filtering versus motion-compensated prediction
SPIE Proceedings, 2005In previous work, a performance bound for multi-hypothesis motion-compensated prediction (MCP) has been derived based on a video signal model with independent Gaussian displacement errors. A simplified form of the result is derived in this work. A performance bound for optimal motion-compensated temporal filtering (MCTF) has also been proposed based on
Yongjun Wu, John W. Woods
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