Reduction of Blocking Artifacts in JPEG Compressed Images

Image compression is a important issue for many applications in the area of multimedia communication, the objective being reduction of storage and transmission costs. Various types of techniques have been developed for various applications. Digital images are large in size and occupy large space. There large size deals with two types of problems, first is large bandwidth requirements and other is of more time required for uploading and downloading through internet. We can compress audio signals, video signal, text, fax and images. For medical images lossless compression is used and for other types lossy compression can be used. For compressing an image, use DCT (Discrete Cosine Transform) technique. During recovering original image from compressed image occurs various problems like blocking artifacts, ringing artifacts, blur artifacts or edge artifacts are observed. However quantification of these artifacts is a different task. In this paper discuss various conventional filters, which is used to reduce artifacts in compressed images. The experimental results are illustrating the performance of conventional filters on the basis of MSE and PSNR.