Abstract: In order to obtain maximum compression ratio and solve the problem of tremendous information transmission and storage under the condition that the images meet the requirement of data processing precision,according to the character of digital image,H.264 was applied to encode object region and background region encoding respectively so that 70 multiple compression picture data and object coordinates in the image coordinate system were obtained.The experimental results illustrated that the object region lossless compression encoding and background region lossy compression encoding were implemented.It not only satisfied the range data processing precision but also reduced the information quantity consumedly.The technique can be applied to process the standard bit images and widely extended in other ranges.