IMAGE ENCODING DEVICE AND METHOD, COMPUTER READABLE RECORDING MEDIUM RECORDING PROGRAM FOR IMAGE ENCODING CONTROL AND DATA PREPARATION DEVICE FOR RECORDING

摘要

PROBLEM TO BE SOLVED: To improve subjective image quality while providing a function for making a quantization characteristic value for each block fluctuate corresponding to the complication of images for each block within a screen. ;SOLUTION: The switching information of whether or not to use a fluctuating quantization mechanism is recorded in a fluctuating quantization mechanism setting file inside a computer 12 for video encoder control corresponding to the time code of the images. The computer 12 for the video encoder control controls a switch part 44 based on the fluctuating quantization mechanism setting file and turns the fluctuating quantization mechanism on and off. The switch part 44 connects a quantization circuit 33 and a quantization index decision part 42 in the case of turning off the fluctuating quantization mechanism and connects the quantization circuit 33 and a macroblock quantization index decision part 43 for using the fluctuating quantization mechanism in the case of turning on the fluctuating quantization mechanism.;COPYRIGHT: (C)1998,JPO