A Post Processing Technique for Reducing Blocked Artifacts in JPEG Image Compression
Mukesh Dalal · IOSR Journal of Engineering · 2013
Compression of digital images has been a topic of research for many years.The main role of compression is to reduce memory requirements for transmission and bandwidth requirements for storage of all forms of data.This paper aims to report a post processing technique to reduce the blocking artifacts in JPEG compressed images up to a very extent keeping in mind that less computation efforts would be made.The proposed approach is hybrid model of both spatial domain and frequency domain in which post processing is performed in two phases.In first phase, pre-filtering is implemented in spatial domain while second phase, selected DCT coefficients are modified.