A qualitative measure of Jpeg compressed image

Data compression is widely used in many scientific areas and in a transparent manner in various daily life activities. Lossy data compression, eg in JPEG images, leads to the loss of part of the original information but usually not essential. In this paper we present a software system for the evaluation of the quality of compressed JPEG images. This system can act on different stages of Jpeg and allow to check the resulting change in the quality and compression.