| 摘要 |
PROBLEM TO BE SOLVED: To prevent processing efficiency decline while reducing the capacity of a memory arranged in the preceding stage of a filter in an image processing system for performing spatial filtering processing to image data. SOLUTION: In the image memory 4A for tentatively storing the image data segmented into the small rectangular region 2a of p pixels×q lines from the image data of one image of M pixels×N lines stored in a main memory 2 and successively transferred through the system bus 3 of a bus width of k bits×s pixels by raster scan and supplying them to the filter 5A of a filter size of m pixels×n lines, a memory part comprising memories whose bit width is k for one pixel of the image data for a number t which is the larger one of the s pixels of the bus width of a system bus 3 and the number n of lines of the filter 5A, the data of s pixels continued on one line, which are transferred in one clock cycle of the system bus 3, are written to different line memories, and the pixel data of the same position in a horizontal direction on the respective lines are written to the different line memories. COPYRIGHT: (C)2007,JPO&INPIT |
