Research and Realization of Image Compression Algorithmic Based on JPEG
Xueyi Tang · Video Engineering · 2009
An image is utilized widely as the carrier of information , but the amount of data in a digital image is too huge , so it must be compressed before stored and transmitted. In this text, algorithmic of JPEG based on DCT is introduced ,a method of grading of DCT coefficient is raised,so that the bit stream of JPEG coding can be graded.