Decomposing SAR Image and Protecting Target Region for Compression
图像分解和区域保护在SAR图像压缩中的应用

The bandwidth restricts airborne communication,so compression airborne SAR image with loss is a feasible way to enhance the real-time performance and image quantity. This paper proposed a SAR image compression strategy which extracts and protects target regions based on image decomposing technology. Firstly, the SAR image is decomposed into structure component and texture component. Then the target information is detected and classified from the texture component to construct ROI mask. Finally, the ROI mask is used to protect the important target information during compression by allocating more bits to it while reducing bit allocation to the residual.The experimental results indicate that the reconstructed image using the proposed approach has better visual effect than those processed by JPEG2000 arithmetic under the same bit rate.