| 摘要 |
PURPOSE:To provide an inexpensive foreign matter detector which can operate by an easy circuit. CONSTITUTION:Whenever new image data is outputted from an image pickup means 20, an adding part 31 repeats addition with image data integrated thus far and data by prescribed number of rows from the last row of image data after addition, which is stored in a storage part 32 is outputted as a detected data from a transfer data switching part 34. Detection data outputted like this are data obtained by in turn adding plural pieces of image data and is image data where an object to be measured, which desires detection and moves in a prescribed speed, is emphasized. |
