IMAGE INFORMATION CONVERTING DEVICE AND METHOD

摘要

PROBLEM TO BE SOLVED: To suppress fluctuations in a reference quantization scale. SOLUTION: The device for converting MPEG2 image compression information (bit stream) of interlaced scanning to MPEG4 compression information (bit stream) of progressive scanning includes a pseudo slice complexity calculation part 25 for calculating a pseudo slice complexity a VOP complexity calculation part 24 for calculating a VOP complexity, a calculation part 26 for calculating a target code quantity of VOP, and a calculation part 27 for calculating a target code quantity of pseudo slice. An MPEG4 image information encoder (I/P-VOP) 20 controls a code quantity according to the target code quantity at the time of encoding image information into MPEG4 image compression information (bit stream).