| 摘要 |
<p>A separation filter deciding device provided with an image input unit, a memory unit, a setting unit, an evaluating unit and a separation filter deciding unit is disclosed. The image input unit inputs a picked-up image in which a tire surface including a characteristic portion is picked up. The memory unit stores a plurality of filters to carry out image processing for the picked-up image, a teacher image in which the characteristic portion is separated from the picked-up image and a weighted image in which a weight is set to a predetermined region for the picked-up image. The setting unit sets a separate filter combined with two or more filters out of the plurality of the filters. The evaluating unit seeks an evaluating value on the basis of an image formed by adding the weight based on the weighted image to a difference between the processed image subjected to processing by each of the separate filters and the teacher image. The separation filter deciding unit makes the setting of the setting unit and the arithmetic operation of the evaluation unit repeat until the evaluating value is in a predetermined range and decides that the separate filter corresponding to the evaluating value as a result of the repetition is a separation filter to separate the characteristic portion from the picked-up image.</p> |
