Adaptive window length median based algorithms for removal of impulse and impulsive type degradations in images and videos

Abstract

Images and videos are often corrupted by noise and degradations newlinedue to faulty communications or noisy channels or faulty cameras in the newlinetransmissions of images and videos over channels Even with the advancing newlinecamera and digital recording technology there are many situations in which newlinesome portion of recorded images or videos for a short period may suffer from newlinesevere degradations Degradations such as strip lines drop lines blotches newlineband missing occur along with impulse noise while recording or during newlinetransmission Strip lines are caused by unequal responses of elements of a newlinedetector array to same amount of incoming electro magnetic energy This newlinephenomenon causes heterogeneity in overall brightness of adjacent lines newlineDrop line occurs when a detector does not work properly for a short period newlineImpulse noise appears when disturbing microwave energies are present or the newlinesensordetector is degraded Band missing is a serious problem and is caused newlineby corruption of two or more dropstrip lines continuously newline newline