This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -

matlab is the one of the best tool.it is usefull to u all .in this image stenography method is good.jpeg compresion.imag stegno ,image compression using nural netwoks.total all codes

Jpeg compression in image processing for matlab-Jpeg compression iimage processing