VIDEO PROCESSING APPARATUS, VIDEO PROCESSING METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To reduce a processing time in tracking a feature point, while improving the accuracy of a feature point of a video frame.SOLUTION: A video processing apparatus includes: a pose estimation unit which estimates a pose of an imaging apparatus imaging a second video frame, using r...

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Main Authors KAJIWARA YASUHIRO, TAKAZAWA KAZUHIRO, MATSUSHITA KAZUFUMI, SHIRATAKA YASUKO, SADASUE TAMON
Format Patent
LanguageEnglish
Japanese
Published 27.07.2017
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Summary:PROBLEM TO BE SOLVED: To reduce a processing time in tracking a feature point, while improving the accuracy of a feature point of a video frame.SOLUTION: A video processing apparatus includes: a pose estimation unit which estimates a pose of an imaging apparatus imaging a second video frame, using re-projection points formed by re-projecting three-dimensional points generated based on a first video frame and a second video frame on a virtual video frame, and an observation point corresponding to the re-projection points in the second video frame, in association with the re-projection points; a threshold setting unit which sets an attribute value of the re-projection point, which is not associated with the observation point in the pose estimation and is most similar to a feature point in the first video frame, as a threshold; and a tracking unit which tracks a feature point in the second video frame in a third video frame, by use of the threshold.SELECTED DRAWING: Figure 5 【課題】映像フレームの特徴点の精度を向上しつつ、特徴点の追跡の処理時間を短縮させる。【解決手段】第1の映像フレームと、第2の映像フレームとに基づき生成される3次元点を仮想の映像フレームに再投影させた再投影点と、前記第2の映像フレームにおける前記再投影点に相当する観測点を前記再投影点と対応付けて、前記第2の映像フレームが撮影されたときの撮像装置のポーズを推定するポーズ推定部と、前記ポーズの推定において、前記観測点と対応付けられなかった前記再投影点のうち、前記第1の映像フレームにおける特徴点と最も類似する前記再投影点の属性値を閾値に設定する閾値設定部と、前記閾値を用いて、前記第2の映像フレームにおける特徴点を、第3の映像フレームにおいて追跡する追跡処理を行う追跡部と、を有する映像処理装置、が提供される。【選択図】図5
Bibliography:Application Number: JP20160008938