| 摘要 |
<p>PURPOSE:To find the moving vector of the whole image with high accuracy by using the value of a quadratic form having the value calculated from the spatially differentiated value as its coefficients as the value representing reliabil ity in the direction of angle for detected moving vector. CONSTITUTION:The moving vector (u,v) which minimizes the sum ¦Er¦ or resid ual of equation calculated when equation Ex.v+Ey.v+Et=0 representing the relation of the spatial derivatives Ex, Ey and the time derivative Et of an image E (x,y.t) continued in point of time and the moving vector (u,v) on the image, and a condition that the moving vector (u,v) is kept constant in an area S set on the image are applied to each differentiated value calculated from an actual image is set as the moving vector of the area S on the image. Then, the value of quadratic form represented in equation II in which a value represented in equation I calculated from the spatial differentiated value is set as the coefficient is used as the value representing the reliability in the direction of angle theta of the detected moving vector. In such a way, it is possible to detect a mobile body with high accuracy.</p> |
