关键词: 二值化, 计算机辅助测量, 图象处理, 象素加权回归法

Abstract: A microscope-TV camera-computer aided measuring system is discussed, and a method of measuring microsize based on the weighted least square regression is proposed. The results of experiment show that the method has a good stability and high precise, and that there is a significant difference between the vertical and horizontal directions because the factors such as the scanning velocity of the camera can affect the values of pixels in CCD, which must be considered in measuring.

Key words: Computer aided measuring, Image process, Pixel, Weighted regression method Binarization