MOVING IMAGE ENCODING DEVICE

摘要

An updated region encoding unit detects an updated region in a frame of an inputted image signal and encodes the updated region. A retransmission candidate tile extracting unit extracts from within a screen a tile which does not belong to an updated region in a current frame and which is a partial region transmitted after encoded with a quality equal to or less than a first quality. A character likelihood estimating unit, with respect to a tile extracted by the retransmission candidate tile extracting unit, calculates a likelihood value indicating likelihood that the tile is a character region. A character-likelihood-order intra update unit selects a tile in decreasing order of the likelihood value from among tiles extracted by the retransmission candidate tile extracting unit, and encodes the tile with a second quality which is higher than the first quality and transmits the result.

主权项

1. A moving image encoding device comprising:
an updated region encoding unit detecting an updated region in a frame of an inputted image signal and encoding the updated region; a retransmission candidate tile extracting unit extracting, from among a plurality of tiles which are partial portions of the frame, a tile which does not belong to the updated region in a current frame, the tile transmitted after encoded with a quality equal to or less than a first quality; a character likelihood estimating unit, with respect to the tile extracted by the retransmission candidate tile extracting unit, calculating a likelihood value indicating likelihood that the tile is a character region; and a character-likelihood-order intra update unit selecting the tile in decreasing order of the likelihood value from among the tiles extracted by the retransmission candidate tile extracting unit, and, for transmission, encoding the tile with a second quality which is higher than the first quality.