Abstract
We know that circle is a simple sketch, and also is an essential element that constitutes the picture. Therefore, being able to detect the circle accurately and quickly seems to be very importance in picture processing, especially in the industry picture processing. What is studied in this text is based on the detection of the Hough shift of circle, namely some round characteristic value will be drawn though the Hough transformation, like the round radius and the center of a circle.
Summarized the circle examination commonly used method. Proposed an improved Hough Transformation used in the round inspection. This method of image preprocesses and then transforms. The result expresses that the method that we used can still reserve the advantage of the traditional transformation of HOUGH, and is not sensitive to the interference in the picture, still can carry on the right detection when the circumference is incomplete.
Keywords: picture processing, detection of circle, HOUGH transformation
