VIDEO ENCODING DEVICE, VIDEO ENCODING METHOD, AND VIDEO ENCODING PROGRAM
PROBLEM TO BE SOLVED: To provide a video encoding device which, when a plurality of motion vector candidates exist, can broaden an actual search area for an encode block by adaptively correcting a search area and performing a search.SOLUTION: Provided is a video encoding device correcting a predicti...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a video encoding device which, when a plurality of motion vector candidates exist, can broaden an actual search area for an encode block by adaptively correcting a search area and performing a search.SOLUTION: Provided is a video encoding device correcting a prediction vector candidate in order to avoid the duplication of a search range and generating a new prediction vector candidate before performing video encoding on the prediction vector candidate, the video encoding device comprising: center point detection means for calculating coordinates of a center point from among coordinates indicated by all motion vector candidates and outputting the calculated center point coordinates; detection means for detecting the overlapping of motion vector candidate search areas from the coordinates indicated by a plurality of motion vector candidates and a search range and outputting overlap information; and candidate vector correction means for correcting the value of the motion vector candidate using the coordinates indicated by the plurality of motion vector candidates, the coordinates of the center point, the overlap information, and reference image information, and outputting the corrected motion vector candidate.
【課題】複数の動きベクトル候補があるときに、適応的に探索領域を修正して探索を行うことにより、符号化ブロックに対する実際の探索領域を広くすることができる映像符号化装置を提供する。【解決手段】予測ベクトル候補に対して、探索範囲の重複を避けるために予測ベクトル候補を修正し、新たに予測ベクトル候補を生成して映像符号化を行う映像符号化装置であって、全ての動きベクトル候補の指す座標から中心点の座標を算出して出力する中心点検出手段と、複数の動きベクトル候補の指す座標および探索範囲から、動きベクトル候補の探索領域の重なりを検出し、重なり情報を出力する重なり検出手段と、複数の動きベクトル候補の指す座標と、中心点の座標と、重なり情報と、参照画像情報を用いて、動きベクトル候補の値を修正し、修正済の動きベクトル候補を出力する候補ベクトル修正手段とを備える。【選択図】図2 |
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