| 摘要 |
PURPOSE:To obtain highly accurate distance information or height information by estimating and correcting geometrical distortion on an image which may be generated due to the difference of a visual point on the basis of the relation of stereoscopic corresponding points found on an image with low resolution due to gradual thinning. CONSTITUTION:A pair of stereoscopic image data 1 is thinned to 1/2 the quantity of data by an image blurring thinning processor 2. Since simple image thinning does not satisfy a sampling theorem, blurring processing is adopted. The image with 1/2 size obtained by the processor 2 is stored in an image file 3 together with the original image. The image with 1/2 size stored in the image file 3 is read out again and furthermore blurred and thinned by the processor 2 and the blurred and thinned image is stored in the file 3 as an image with 1/4 size of the original image. After repeating image blurring thinning plural times, reduced images having plural levels are stored in the file 3. Thus, the specially rough stereoscopic corresponding relation is expressed as stereoscopic corresponding relation on the image with the current resolution. |
