DESIGN AND VERIFICATION OF DWT ALGORITHM FOR IMAGE COMPRESSION USING

Image compression is one of the major image processing techniques. Discrete Wavelet Transforms is the most popular transformation technique adopted for image compression. Image compression is the application of Data compression on digital images. A fundamental shift in the image compression approach came after the Discrete Wavelet Transform (DWT) became popular. The reduction in file size allows more images to be stored in a given amount of disk or memory space. It also reduces the time required for images to be sent over the Internet or downloaded from web pages. JPEG and JPEG 2000 are two important techniques used for image compression. To overcome the inefficiencies in the JPEG standard and serve emerging areas of mobile and internet communications, the new JPEG2000 standard has been developed based on the principles of DWT. This Paper presents an approach towards HDL implementation of the Discrete Wavelet Transform (DWT) for image compression. The design follows the JPEG2000 standard and can be used for both lossy and lossless compression. In order to reduce complexities of the design linear algebra view of DWT has been used in this concept. The design has been developed in Verilog using Altera’s Quartus II 9.1 Web Edition