Hybrid Jpeg Compression Using Edge Based Segmentation

A hybrid image compression method is proposed in this paper which segments the image into background and foreground and compress them with different quality levels.. The foreground of the image is given more importance than the background. An edge based segmentation method is used to segment the image into foreground area and background area. The proposed method highly preserves quality of the foreground image. JPEG compression is a widely used compression technique. Normally the JPEG compression method uses linear quantization and threshold values to maintain certain quality level in an entire image. The proposed method adapts variable quantization and threshold values corresponding to background and foreground. This ensures that the vital area of the image is highly preserved than the other areas of the image. This hybrid approach increases the compression ratio and produces a desired high quality compressed image.