Rate-Distortion Optimization Apparatus and Method for depth-image encoding

摘要

PURPOSE: A rate-distortion optimization apparatus and method thereof are provided to use a high quantization parameter by determining a rate-distortion cost function optimized to the quantization parameter. CONSTITUTION: A rate-distortion optimization apparatus creates one or more candidate quantization parameters(312). The rate-distortion optimization apparatus calculates rate-distortion costs for each candidate quantization parameter(328). The rate-distortion optimization apparatus selects a compression mode which minimizes the rate-distortion costs for one or more candidate quantization parameters(330). The rate-distortion optimization apparatus selects an optimized quantization parameter among the candidate quantization parameters(332).