Perceptual quantization parameter selection for crime scene investigation tool images

1 Introduction Crime scene investigation(CSI)is critical for solving criminal cases and court trials.Currently,all CSI data must be kept as electronic files in specific systems according to relevant regulations.Electronic files,including reconstructed CSI images,provides great convenience for the public security and court to store,manage,display,and analyze CSI data more effectively.Image coding which pursues higher reconstructed quality of CSI images using lower coding rate plays a very important role in the above process.Compared with the previous image coding standards,high efficiency video coding(HEVC)still image coding technique significantly improves the image coding efficiency.The coding efficiency of HEVC is closely related to the selected quantization parameter(QP).