| 摘要 |
PURPOSE:To extract various high-degree feature quantity by extracting the various types of the respective features of a binary pattern, cutting out the regions of these features and coding these, obtaining the feature quantity of each region based on these coded regions. CONSTITUTION:A block of black is cut-out by a run length counter with respect to a binary coded input line pattern, and the beginning point coordinates thereof and the end point coordinates are made into a graph. Also, the local features of the continuous two lines or two rows of the binary pattern are extracted. For this, the noise processing in the line direction is performed and simultaneously, the correction of the local feature graph is carried out according to the noise processing. Next, the integrating process differing with each feature extracted is carried out, whereby large area feature extraction is carried out. As a result, the feature extraction and cut-out of the region are accomplished simultaneously and the results thereof are coded by run length. At the same instant of the large area feature extraction, the processing of the noise in the row direction is carried out. Next, the feature quantity of each region is extracted by the coded information. Thereby, the region is correctly cut out and the information remains without any loss; hence the extraction of various high-degree features is made feasible. |
