Electerical Engineering, Islamic Azad university of Majlesi Branch
, Isfahan Telecommunication Company (TCE)
Department of Electrical Engineering, Faculty of Engineering
Motion-JPEG is a common video format for compression of motion images with highquality using JPEG standard for each frame of the video. During transmission through a noisychannel some blocks of data are lost or corrupted, and the quality of decompression frames decreased.In this paper, for reconstruction of these blocks, several temporal-domain, spatial-domain, andfrequency-domain error concealment methods are investigated. Then a novel method is proposed forrecovery of channel errors with a mixture of temporal-domain and frequency-domain errorconcealment methods. To reconstruct the missed blocks in the proposed novel method, when twosuccessive frames are similar, a proposed two phase block matching algorithm is performed intemporal-domain. When two successive frames are different, our proposed method reconstructs themissed block by the estimation of DC and AC coefficient, in frequency-domain. The proposedmethod and the other similar methods are simulated for different noise and quality factors. The resultsof quality measurements are indicated that in all tested video sequences, the proposed method showshigher quality in reconstruction of missed blocks.