A Comprehensive Survey on Lossy Image Compression Methods

Abstract

The collection and transmission of digital pictures is a huge problem in the current scenario. Image compression is an arena of research where, by eliminating certain redundancies, the size of the digital images is reduced at an optimum level. There are two forms, lossless and lossy, of image compression techniques. Some of the lossy image compression techniques are discussed by the authors in this paper and include a comparative study of these grayscale image compression techniques.Although lossy compression returns a very high bit rate reduction, as low-quality images are not preferred from the point of view of application, lossless compression is ideal for large application areas such as medical, deep sensing, and defence and research purposes. This paper provides a detailed review on various lossy picture compression methods that have been investigated over last decade in order to reduce the size of the images for efficient image transmission over communication media.