A Method of Lossy Compression for RGB565 Format True Color Image

Abstract

In order to solve the issue of embedded image processing, a method of mixed compression for RGB565 format true color image is proposed. According to the inherent correlation of image data, the method adopts the discrete cosine transform and rearrangement to centralize the data that have higher correlation. Finally, it achieves the image compression by improving the run-length coding combined with statistical coding. Experiments show that the method can compress the true color images with RGB565 format effectively on the platform of ARM-Linux, and achieve a good compression ratio.

Image acquisition system based on microprocessor

“…The scanning order is from left to right and from bottom to top. BMP files are generally composed of file header, information header, color palette and bitmap data [11] . The system uses RGB565 to encode BMP.…”