| 摘要 |
PURPOSE:To obtain a high speed picture binarizing method with which the processing time does not grow longer even if the characteristic of the density distribution of the picture changes when the binarization is performed as the preceding processing for the position recognition, etc. CONSTITUTION:For the binarizing level ratio beta being used for the setting of the initialization of the binarizing level BiN, the past data is learned and updated by calculating the binarizing level beta which was effective for the binarization at past from the binarizing level BiN which was effective for the binarization. Even if the state of an object 2 changes and the characteristic of the density distribution changes, the value becomes very near the binarizing level BiN which is effective for the recognition, etc. at the time of performing the initialization setting for the binarizing level BiN. Therefore, the number of times of the changing the binarizing level BiN till the right recognition is made becomes few. |
