Studies Of The Recognition Of Pointer Position Of Dial Based On Color Extracting And Image Segmentation

This thesis mostly discusses the image processing and recognition means of thedial pointer position using the technology of color extracting and image segmentation.The paper introduces the theory of colorized image processing, classify the pointer dial,makes the dials that have obvious character of color be the emphases of research, usesthe technology of color extracting and image segmentation to orient the pointer whichshould be identified and uses many image processing technology ,such as grayprocessing,two values processing,Hough processing and so on , to complete the latterprocessing of image. In the process of orienting the pointer, be aimed at the flaw of thedirect hue matching and the characteristic of the transformer temperature meter, thearticle puts forward a new method, the main color extracting, which is applicable foridentifying pointer area under bad illumination condition. Through a great deal ofdifferent conditional experiments, this method has many advantages, such as simplecomputing, good applicability and good processing result, and this method establishesthe basic for identifying the pointer position and computing the pointer angle.