Compressed-domain video indexing techniques using DCT and motion vector information in MPEG video

1997 ◽  
Author(s):  
Vikrant Kobla ◽  
David S. Doermann ◽  
King-Ip Lin ◽  
Christos Faloutsos
Keyword(s):  
Motion Vector ◽  
Video Indexing ◽  
Compressed Domain ◽  
Indexing Techniques ◽  
Vector Information

Image and video indexing in the compressed domain

1997 ◽  
Author(s):  
Mrinal K. Mandal ◽  
Fayez M. Idris ◽  
Sethuraman Panchanathan
Keyword(s):  
Video Indexing ◽  
Compressed Domain

An Improved Error Concealment Based on Redundant Motion Vector Information

2012 ◽  
Vol 532-533 ◽  
pp. 1219-1224
Author(s):  
Hong Tao Deng
Keyword(s):  
Video Transmission ◽  
Error Concealment ◽  
Video Quality ◽  
Motion Vector ◽  
Compressed Video ◽  
Vector Information ◽  
Vector Estimation ◽  
Channel Errors ◽  
Bit Stream

During video transmission over error prone network, compressed video bit-stream is sensitive to channel errors that may degrade the decoded pictures severely. In order to solve this problem, error concealment technique is a useful post-processing tool for recovering the lost information. In these methods, how to estimate the lost motion vector correctly is important for the quality of decoded picture. In order to recover the lost motion vector, an Decoder Motion Vector Estimation (DMVE) criterion was proposed and have well effect for recover the lost blocks. In this paper, we propose an improved error concealment method based on DMVE, which exploits the accurate motion vector by using redundant motion vector information. The experimental results with an H.264 codec show that our method improves both subjective and objective decoder reconstructed video quality, especially for sequences of drastic motion.

Fast Compressed Domain Copy Detection with Motion Vector Imaging

2018 ◽  
Author(s):  
Yuanyuan Yang ◽  
Yixiong Zou ◽  
Yemin Shi ◽  
Qingsheng Yuan ◽  
Yaowei Wang ◽  
...  
Keyword(s):  
Motion Vector ◽  
Compressed Domain ◽  
Copy Detection

Deghosting based on in-loop selective filtering using motion vector information for low-bit-rate-video coding

2009 ◽  
Author(s):  
Niranjan D. Narvekar ◽  
Wei-Jung Chien ◽  
Nabil G. Sadaka ◽  
Glen P. Abousleman ◽  
Lina J. Karam
Keyword(s):  
Video Coding ◽  
Motion Vector ◽  
Bit Rate ◽  
Low Bit Rate ◽  
Vector Information
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