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Motion compensated digital tomosynthesis
Radiotherapy and Oncology, 2013Digital tomosynthesis (DTS) is a limited angle image reconstruction method for cone beam projections that offers patient surveillance capabilities during VMAT based SBRT delivery. Motion compensation (MC) has the potential to mitigate motion artifacts caused by respiratory motion, such as blur.
Van Herk, Marcel; id_orcid 0000-0001-6448-898X +3 more
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A Solution for Bistatic Motion Compensation
2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006Bistatic synthetic aperture radar (SAR) missions have become attractive in the last years, because of their higher degree of freedom in choosing transmitter and (passive) receiver motion trajectories. In order to take advantage of this increased imaging flexibility, adequate processing algorithms have to be developed, implemented and verified with ...
H. Nies +4 more
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2018
Abstract This chapter introduces the different methods used to synchronize pulse sequences with both cardiac and respiratory motions, to suppress motion-related blurring and image artefacts. A single frame or a series of images (cine imaging) can be acquired at different time points (cardiac phases) throughout the cardiac cycle by ...
Sebastian Kozerke +2 more
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Abstract This chapter introduces the different methods used to synchronize pulse sequences with both cardiac and respiratory motions, to suppress motion-related blurring and image artefacts. A single frame or a series of images (cine imaging) can be acquired at different time points (cardiac phases) throughout the cardiac cycle by ...
Sebastian Kozerke +2 more
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Motion compensated image interpolation
IEEE Transactions on Communications, 1990Field skipping is a variable technique for reducing drastically the bit rate necessary to transmit a television signal. All fields have to be reconstructed at the receiver end, but nearest-neighbor or linear interpolations give poor performances when significant scene activity is present; therefore, some motion compensation scheme is mandatory ...
CAFFORIO, CIRO +2 more
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Intensity controlled motion compensation
Proceedings DCC '98 Data Compression Conference (Cat. No.98TB100225), 2002A new motion compensation technique that allows more than one motion vector inside each block is introduced. The technique uses the intensity information to determine which motion vector to apply at any given pixel. An efficient motion estimation algorithm is described that finds near optimal selections of motion vectors.
Jarkko Kari 0001, Mihai Gavrilescu
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The motion transform: a new motion compensation technique
1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings, 2002Motion estimation plays an important role in video coding schemes by removing temporal redundancies that exist in image sequences. Motion information that is required in motion compensated prediction is transmitted as side information, as in forward motion estimation, or can be computed at the receiver in backward motion estimation.
Robert M. Armitano +2 more
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Asymmetric motion estimation/compensation
Proceedings of 3rd IEEE International Conference on Image Processing, 2002The present paper introduces an original way to perform motion estimation and compensation. The scheme is asymmetric in the sense that the compensation stage is not merely the reverse operation of the estimation process. Motion estimation is computed using a classical block matching algorithm and the set of vectors that compose the motion information ...
Xavier Marichal, Benoît Macq
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Motion compensated film restoration
Machine Vision and Applications, 2003Motion picture films are susceptible to local degradations such as dust spots. Other deteriorations are global such as intensity and spatial jitter. It is obvious that motion needs to be compensated for before the detection/correction of such local and dynamic defects.
Olivier Buisson +2 more
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On motion compensation of wavelet coefficients
1995 International Conference on Acoustics, Speech, and Signal Processing, 2002New intra- and inter-frame coding techniques for coding a wavelet decomposed video signal are proposed. These methods are based on the required accuracy of motion compensation for each of the different frequency subbands. For each subband, our methods prohibit inter-frame coding and switch to intra-frame coding when the estimated motion vector is not ...
Hiroshi Ito, Nariman Farvardin
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Motion Compensation in Emission Tomography
2012With the ever-improving spatial resolution available in single photon emission computed tomography (SPECT) and, especially, in positron emission tomography (PET), the unavoidable organ and subject motion is becoming one of the dominant factors limiting the practically achievable spatial resolution in the tomographic images.
Hoff, J., Langner, J.
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