IMAGE RECOGNITION DEVICE, IMAGE RECOGNITION METHOD, IMAGE RECOGNITION PROGRAM, AND RECORDING MEDIUM

PROBLEM TO BE SOLVED: To improve the accuracy of recognition when recognizing the position of a prescribed body portion of a user boarding a mobile entity by using the photographed image of a camera mounted in the mobile entity.SOLUTION: When affected by the direct oscillation of a vehicle V, second...

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Bibliographische Detailangaben
1. Verfasser: SAKA TAKESHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To improve the accuracy of recognition when recognizing the position of a prescribed body portion of a user boarding a mobile entity by using the photographed image of a camera mounted in the mobile entity.SOLUTION: When affected by the direct oscillation of a vehicle V, secondary coupled oscillation occurs between the hand portion of a user and the vehicle V. The coupled oscillation differs in its swing width or occurrence timing depending on various personal conditions of the user. For the user to be photographed at that point of time, a difference amount calculation unit 32 and a by-user characteristics learning unit 33 analyze a correspondence relation between the acceleration detected by an acceleration detection unit 23 and the coupled oscillation and stores the analyzed relation, whereby the characteristic of the coupled oscillation corresponding to the user is learned. By comparing the detected acceleration against the result of learning, it is possible to detect the coupled oscillation corresponding to the user with high accuracy. By correcting the position of the photographed image itself with the detected coupled oscillation, it is possible to recognize the point of indication indicated by the hand of the user with high accuracy.SELECTED DRAWING: Figure 7 【課題】移動体に搭載されたカメラの撮像画像により当該移動体に搭乗するユーザの所定の身体部分を位置認識する際の認識精度を向上する。【解決手段】車両Vの直接振動の影響を受けてユーザの手の部分と車両Vとの間で2次的な連成振動が生じる。連成振動はユーザの多様な個人的条件によって、その振り幅や振動の発生タイミング、ピークタイミングが異なってくる。その時点の撮像対象のユーザに対し、差分量算出部32とユーザ別特性学習部33が、加速度検出部23で検出される加速度と連成振動との対応関係を解析して記憶することでそのユーザに対応した連成振動の特性を学習する。検出された加速度を学習結果に照合することで、ユーザに対応する連成振動を高い精度で検出できる。検出した連成振動で撮像画像自体の位置を補正することでユーザの手が指し示す指示点の位置を高い精度で認識できる。【選択図】図7