A Semi-Lossless Image Compression Procedure using a Lossless Mode of JPEG

Abstract

Day by day, communication through the internet is progressing; particularly video calling for which sending a massive amount of data over the internet and saving on a computer is being a big challenge. For which, there are many compression algorithms; such as block transform, vector quantization and JPEG are used to convert a big dataset in such a format so that it can be sent over the internet at a high speed and stored in a small space in computer. In this paper, a new procedure has been proposed using a lossless mode of JPEG by removing the first and last bits from the exact binary pattern of each pixel which provides a better result than the state-of-the-art techniques. In this technique, the two bits are removed after a little bit preprocessing and then the remaining binary pattern is replaced by a fixed value each. Lastly, average code word, compression ratio and PSNR are used to assess the performance of the proposed procedure with the state-of-the-art techniques. From the experimental results, it looks that the proposed procedure provides better results than the state-of-the-art techniques.