Patent ID: 6337879
Filing Date: 2002-01-08
Classification: H04N

Abstract:
A video data compression apparatus, comprising:indicator data calculating means for calculating indicator data indicating a complexity of video data for every picture from non-compressed video data; target value calculating means for calculating a target value of an amount of data after compression of said video data for every picture based on said calculated indicator data; and compressing means for compressing said non-compressed video data so that the amount of data after compression becomes said calculated target value, wherein said compressing means compresses said non-compressed video data to a picture type sequence containing a plurality of types of pictures (I picture, P picture, and B picture, or a combination of them) in a predetermined order, said indicator data calculating means calculates ME residual data as said indicator data of pictures to be compressed to a P picture and B picture and calculates flatness data and intra AC data or one of the same as said indicator data of a picture to be compressed to an I picture, and said target value calculating means calculates difficulty data corresponding to the amount of data after compression based on said calculated indicator data and further calculates said target value based on the calculated difficulty data.