Rate Control Algorithm for High Quality Compression of Static Test Pattern Using Target Bit Allocation in Digital TV System

In this paper, we propose a new algorithm for generating a high quality test bit-stream to evaluate the static image quality of DTV receiver based on a target bit allocation in the process of rate control. In order to allocate the number of target bits, we consider the normalized complexities, which are updated or maintained according to GOP picture qualities. The proposed rate control method is suitable for compression of static test pattern while MPEG-2 Test Model 5 is suitable for moving picture. To evaluate the performance of pro-posed algorithm, the test bitstream are generated by an MPEG-2 software en-coder using the proposed algorithm. Experimental results show that average PSNR of the proposed method is higher than those of the conventional case. With experiment in DTV system, we have confirmed that the proposed algorithm has a stable bit rate and good video quality and it is suitable for evaluation of the DTV receiver.