A motion estimation and compensation algorithm for 4D CBCT of the abdomen

2019 ◽  
Author(s):  
Seongjin Yoon ◽  
Alexander Katsevich ◽  
Michael Frenkel ◽  
Peter Munro ◽  
Pascal Paysan ◽  
...  
Keyword(s):  
Motion Estimation ◽  
Compensation Algorithm

scholarly journals Active Mesh Based Motion Compensation Algorithm for Video Compression in Wavelet Sub Bands

2019 ◽  
Vol 8 (6) ◽  
pp. 1812-1817
Keyword(s):  
Motion Estimation ◽  
Video Compression ◽  
Motion Compensation ◽  
Motion Vector ◽  
Motion Vectors ◽  
Energy Functions ◽  
Mesh Motion ◽  
Compensation Algorithm ◽  
Original Frame ◽  
Performance Rate

The method of assessing the motion vectors is termed as Motion Estimation and consequently reconstructing the original frame using these motion vectors is termed as Motion Compensation. In this paper a new active mesh based Motion estimation and compensation algorithm in wavelet domain at subpixel level is proposed. To achieve the accuracy in estimating the motion vector from reference frame to predicted frame in sub pixel level a Wavelet based Counterlet transform is used. This new mesh based method is based by minimizing the mesh energy with energy functions as its input coefficients. The accuracy of the estimation and the compensation is improved by the feature points obtained by the energy functions. The analysis of the experimental results describes that there is improvement in the distortion of the performance rate for the video compression and this is achieved by the generation of the structured and the unstructured active mesh motion techniques in the wavelet sub-bands. The energy criteria of the input coefficients helps to retain the energy in the sub-bands which is a condition that helps in significant gaining of the PSNR required for better outcome.

Efficient Frame Error Concealment Using Bilateral Motion Estimation for Low Bit-Rate Video Transmission

2009 ◽  
Vol E92-B (2) ◽  
pp. 461-472
Author(s):  
DinhTrieu DUONG ◽  
Min-Cheol HWANG ◽  
Byeong-Doo CHOI ◽  
Jun-Hyung KIM ◽  
Sung-Jea KO
Keyword(s):  
Motion Estimation ◽  
Video Transmission ◽  
Error Concealment ◽  
Bit Rate ◽  
Low Bit Rate

Low-Power Motion Estimation Processor with 3D Stacked Memory

2015 ◽  
Vol E98.A (7) ◽  
pp. 1431-1441 ◽  
Author(s):  
Shuping ZHANG ◽  
Jinjia ZHOU ◽  
Dajiang ZHOU ◽  
Shinji KIMURA ◽  
Satoshi GOTO
Keyword(s):  
Motion Estimation ◽  
Low Power ◽  
Stacked Memory

Motion Estimation byUsing Stereo Vision Analysis For Underwater Observation System

2019 ◽  
Author(s):  
Masyhuri Husna Binti Mazlan ◽  
Morisawa Daisuke ◽  
Koike Yoshikazu ◽  
Shimizu Junji ◽  
Enomoto Eriko ◽  
...  
Keyword(s):  
Motion Estimation ◽  
Stereo Vision ◽  
Observation System ◽  
Underwater Observation
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