A simplified model of delta-distortion for JPEG2000 rate control
Xing Qin, Xiaolang Yan, Xing Zhao, Chongpong Yang, Yang Ye · 2004
Rate-distortion optimized rate control is one of the superior features of JPEG2000. The calculation of delta-distortion for each pass is the key to implementing rate control. The paper presents a simplified model of delta-distortion calculation. Compared with the one in the verification mode (VM) of the JPEG2000 standard, this model has the following merits: code-block memory access free; lower memory requirement; lower computational complexity; less negative impact on image quality.