| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of image processing errors even when the transporting speed of a steel plate, etc., is switched when the luminance level of video signals outputted from a line sensor, such as the TDI sensor, etc., changes by adjusting the luminance level to a fixed level and inputting the adjusted level to an image processor. SOLUTION: While the picture of an object to be processes, for example, a steel plate 8 treated by means of a surface-treating system is taken with a TDI sensor 5, designated image processing is performed on a signal processing board 4 after the luminance level of the video signals outputted from the sensor 5 is adjusted to a fixed level by adjusting the amplification factor of a gain adapter device 7 in accordance with the transported speed of the steel plate 8. |
