Title:
傾き検出方法及びエンタテインメント・システム
Document Type and Number:
Japanese Patent JP2008512643
Kind Code:
A
Abstract:
A retroreflective sheet 13 (a sword 11 ) is imaged to obtain the maximum X-coordinate "maxX", minimum X-coordinate "minX", maximum Y-coordinate "maxY" and minimum Y-coordinate "minY" thereof. The pixel having the maximum luminance value among a plurality of pixels of which the X-coordinates are the maximum X-coordinate "maxX" is detected to acquire the Y-coordinate "AY[maxX]" of the pixel, while the pixel having the maximum luminance value among a plurality of pixels of which the X-coordinates are the minimum X-coordinate "minX" is detected to acquire the Y-coordinate "AY[minX]" of the pixel. Furthermore, a first characteristic point (X 1, Y 1 ) and a second characteristic point (X 2, Y 2 ) are determined on the basis of the result of comparing the Y-coordinate "AY[maxX]" and the Y-coordinate "AY[minX]", and the tilt angle "An" of the sword 11 is calculated.
Inventors:
Taku Uejima
Keiichi Yasumura
Keiichi Yasumura
Application Number:
JP2007511134A
Publication Date:
April 24, 2008
Filing Date:
September 01, 2005
Export Citation:
Assignee:
New Generation Co., Ltd.
International Classes:
G01B11/26; A63F13/00; G06T7/20; G06T7/60