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Displacement Measurement and Its Application in Interframe Image Coding
1981
IRE Transactions on Communications Systems
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The results of applying the technique to two sets of images are presented which show 8-10 dB improvement in interframe variance reduction due to motion compensation. ...
The motion compensation is applied for analysis and design of a hybrid coding scheme and the results show a factor of two gain at low bit rates. ...
Application of this method in interframe hybrid coding (with and without frame skipping and interpolation) is shown. cussion of other interframe coding techniques are given in [9] and [IO] . ...
doi:10.1109/tcom.1981.1094950
fatcat:sb25tyhemfdpxc7cndrnqpbc6q
High-Speed Extraction of 3D Structure of Selectable Quality Using a Translating Camera
1996
Computer Vision and Image Understanding
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when the viewinterframe camera displacement, and number of frames in a ing positions of the camera are known. ...
The acquisition and processing of the image stream [7, 8] . The most challenging problem in stereo is the probare done in real time on a pipeline architecture based processor. ...
It can be expressed as the product of the interframe camera displacement and the frame index. ...
doi:10.1006/cviu.1996.0047
fatcat:sklem6ms5jamrdk77fpx7z3dta
Digital image stabilization with sub-image phase correlation based global motion estimation
2003
IEEE transactions on consumer electronics
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This paper presents digital image stabilization with sub-image phase correlation based global motion estimation and Kalman filtering based motion correction. ...
The peak values of sub-image phase correlation surfaces reveal reliable local motion vectors, as poorly matched sub images result in considerably lower peaks in the phase correlation surface due to spread ...
) and then obtains feedback in the form of (noisy) measurements as in equation (6) (update stage). ...
doi:10.1109/tce.2003.1261235
fatcat:rg2ysbsxsffilaefvjzpxifmy4
Page 796 of SMPTE Motion Imaging Journal Vol. 103, Issue 12
[page]
1994
SMPTE Motion Imaging Journal
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The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
However, the beauty of subjective assessment is that it measures the per- ceived quality of images directly. ...
In video compression interframe/ field coding is widely used to reduce temporal redundancies; motion esti- mation/compensation is used to pre- dict the current frame, so as to make the interframe/field ...
Reversible interframe compression of medical images: a comparison of decorrelation methods
1991
IEEE Transactions on Medical Imaging
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In interframe decorrelation, distinction is made on the one hand between extrapolation-and interpolation-based methods, and on the other hand between methods based on local motion estimation, block motion ...
image compression, 3) interframe compression yields entropies comparable to intraframe HINT at higher computational costs, and 4) two methods, unregistered extrapolation and interpolation, are nonetheless ...
A displacement vector is obtained by minimizing d(f(x -D , t -11, f(x, t)) (8) where d represents some image distance measure. ...
doi:10.1109/42.108588
pmid:18222859
fatcat:cnht2vvbszakhb2ztkp2putk2e
Displacement imaging for focused ultrasound peripheral nerve neuromodulation
2020
IEEE Transactions on Medical Imaging
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Focused ultrasound (FUS) is an emerging technique for neuromodulation due to its noninvasive application and high depth penetration. ...
Thus, we developed a method that non-invasively measures nerve engagement, via tissue displacement, during FUS neuromodulation of in vivo nerves using simultaneous high frame-rate ultrasound imaging. ...
Data Analysis Parameter space maps were generated by measuring average interframe nerve displacement using an ROI (1 mm x 0.5 mm) at the center of the focus and nerve. 50 displacement images per parameter ...
doi:10.1109/tmi.2020.2992498
pmid:32406828
pmcid:PMC7717066
fatcat:6sysbce3uneqpngqxoxt6sbz7q
Interblock Redundancy Reduction Using Quadtrees
1996
Zenodo
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Publication in the conference proceedings of EUSIPCO, Trieste, Italy, 1996 ...
For interframe applications, displacement vectors at the same location but different images (I and I ) are highly k k-1 correlated. ...
In interframe coding applications motion compensation is usually utilized, and a great number of contiguous blocks present the same displacement vector. Thus, they can be clustered with a quadtree. ...
doi:10.5281/zenodo.36221
fatcat:q365ca5jbjez5n33i2c74yqsiq
Interframe coding of magnetic resonance images
1996
IEEE Transactions on Medical Imaging
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This paper presents a new inter-frame coding method for medical images, in particular magnetic resonance (MR) images. ...
Until now, attempts in using inter-frame redundancies for coding MR images have been unsuccessful. ...
One of the original slices and its coded counterpart are shown in Figures 9 and 10. ...
doi:10.1109/42.538941
pmid:18215945
fatcat:vhn6ey4ff5grfeondoy3yhpzbm
Real-time lossless compression of mosaic video sequences
2005
Real-time imaging
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Interframe predictive coding is invoked only when the motion between adjacent frames is modest and a simple motion compensation operation can significantly improve the compression performance. ...
Aiming to make the encoding throughput high enough for real-time lossless video compression, we propose a hybrid scheme of inter and intraframe coding. ...
For each input frame to be encoded, we compute the intraframe difference of it and the interframe distance between it and the previous frame, which serve as the measurements in the adaptive switching between ...
doi:10.1016/j.rti.2005.07.001
fatcat:33443mmukjdhhhei7pyd5ypiny
Real-Time Digital Image Stabilization Using Kalman Filters
2002
Real-time imaging
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It is shown that the process noise variance has a direct effect on stabilization performance, and that it is possible to implement an efficient and robust stabilization system by adaptively changing the ...
The global camera motion is defined in terms of constant acceleration motion and constant velocity motion models, and Kalman filtering is employed to facilitate smooth operation. ...
Results show that gray-coded bit-plane matching is superior to plain bit-plane matching in terms of accuracy, and thus gray-coded bit-plane matching is a good choice for fast and reasonably accurate global ...
doi:10.1006/rtim.2001.0278
fatcat:6wfiff3lofauvp4s5mrctghpja
Temporal regularization of ultrasound-based liver motion estimation for image-guided radiation therapy
2015
Medical Physics (Lancaster)
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For the training set, the mean and 95th percentile (95%) errors (defined as the difference from manual annotations) were 1.6 and 1.4 mm, respectively (compared to 6.2 and 9.1 mm, respectively, for IT). ...
For controlling linear accelerator tracking and gating, ultrasound motion estimates must remain highly accurate throughout the imaging sequence. ...
The range (minimum to maximum) of interframe similarity values were linearly mapped to α values in the range of 0.2 (less confidence in measurement) to 0.8 (more confidence in measurement). ...
doi:10.1118/1.4938582
pmid:26745938
pmcid:PMC5366873
fatcat:jaze37se6rbgdghp35njxlvc6a
Object tracking using deformable templates
2000
IEEE Transactions on Pattern Analysis and Machine Intelligence
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The tracking proceeds by optimizing an objective function which combines both the shape deformation and the fidelity of the modeled shape to the current image (in terms of gradient, texture, and interframe ...
region possesses consistent color and texture throughout the sequence, and 3) interframe motion: the boundary of a moving object is characterized by large interframe motion. ...
The imaging term i sYÂY$Yd Y measures the agreement between the deformed template and the image [11] . ...
doi:10.1109/34.857008
fatcat:hocutdllnvdkpomw744jyil34e
Video coding algorithm based on image warping and nonrectangular DCT coding
1997
Visual Communications and Image Processing '97
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Object scalability is a new trend in video coding research. This paper presents an attempt of designing an object-oriented coding based on the notion of irregular mesh and image warping. ...
Three techniques are employed: motion compensation based on image warping, image segmentation and object tracking based on (mesh) nodal point adjustment, and nonrectangular DCT coding performed on the ...
Although PSNR is a popular measure of image objective quality, it is not always matches the subjective image quality. ...
doi:10.1117/12.263228
fatcat:b5asazdfujg3zho7dxwo3hcwki
INTERFRAME CODING OF CANONICAL PATCHES FOR LOW BIT-RATE MOBILE AUGMENTED REALITY
2013
International Journal of Semantic Computing (IJSC)
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In this paper, we propose a temporally coherent keypoint detector and design e±cient interframe predictive coding techniques for canonical patches and keypoint locations. ...
Local features are widely used for content-based image retrieval and augmented reality applications. ...
However, in streaming MAR applications, we need to track the object of interest and localize it in all video frames. ...
doi:10.1142/s1793351x13400011
fatcat:lktnxffp55hqbktbfip34ucr2m
Active mesh-a feature seeking and tracking image sequence representation scheme
1994
IEEE Transactions on Image Processing
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It describes a sequence by nodal positions and colors in a starting frame, followed by nodal displacements in the following frames. ...
Our computer simulations have shown that the proposed scheme can successfully track facial feature movements in head-and-shoulder type of sequences, and more generally, interframe changes that can be modeled ...
It describes a sequence by nodal positions and colors in a starting frame, followed by nodal displacements in the following frames. ...
doi:10.1109/83.334982
pmid:18291955
fatcat:us72angzibak3ja57752rfrjp4
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