VIDEO QUALITY CONVERSION DEVICE, CONVERSION PARAMETER GENERATION DEVICE, VIDEO QUALITY APPROXIMATION CONVERSION DEVICE AND PROGRAM THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a video quality conversion device for changing the quality of a video to the quality of a video desired to be conveyed to a viewer.SOLUTION: A video quality conversion device 1 includes: model storage means 10 for preliminarily storing a plurality of generation process models (featured value models) corresponding to the featured value of a video and an observation process model (conversion model) of the video with a conversion function for specifying conversion processing from the photography to display of the video and the coefficient of the conversion function as a parameter; ideal conversion parameter value calculation means 13 for calculating the parameter value of the conversion function of the observation process model minimizing an error between a statistical amount in the case of performing the conversion of the conversion function by applying a designated statistical amount to a designated generation process model and a designated statistical amount; and conversion means 20 for performing the arithmetic operation of the conversion function to the input video by applying the parameter value calculated by the ideal conversion parameter calculation means 13.