With the rapid development of the communications technology and the computer hardware and software, digital image compression code and decode technology are gradually becoming mature. Real-time image processing in multimedia, HDTV, image communication and other fields have been in increasingly wide application, at the same time, the image compression technology has become the core of the multimedia technology. Based on the current development trends of the digital image compression code and decode technology，this article introduced the importance and the feasibility of Huffman coding and decoding in image compression technology. Then the compressions of digital images of the design are described in detail, particularly the test data for Huffman coding and decoding. Consolidated results and the achievement in the VC6.0 programming environment debugging. JPEG in the article is the basic mode of the main algorithm, Such as the change and sampling of color in the mode, the change of 2D DCT, quantitative and so on also given basic solutions. Huffman coding and decoding are entire design and its various modules are debugging and running in VC6.0 programming environment. Debugging and the results show that : Huffman code used to achieve the right JPEG and other image compression, achieve a higher compression ratio, the speed and efficiency of resource utilization are equal to the optimum state, can meet the requirements of the real-time JPEG image coding.
Keywords: Digital image compression, Huffman, encoding, decoding
