Improving Measurement Repeatability of Ball Crater Method by Using Image Processing Techniques
نویسنده
چکیده
A method of improving coating thickness measurement repeatability of the ball crater method is proposed. The improvement is realized by using image processing techniques to measure the radii of crater circles from a microscope image. While traditional methods use a limited number of operator-selected points on a circle edge to calculate the radius value, the new method measures the radius by fitting a circle to all edge points of a crater circle edge, which is automatically extracted from the microscope image of the crater by image processing techniques. This eliminates the randomness introduced by human operators in the traditional methods and improves the measurement repeatability. Experimental results confirm the feasibility of our method and its potential in improving the measurement repeatability and increasing measurement accuracy of the ball crater method.
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