Abstract
It makes use of image detection technology in measuring minuteness aperture between accessories.According to telecentric optics imaging,the measured accessory is imaged to the target of area CCD camera.Meanwhile the image is denoised by filter and enhanced.The Sobel operation is applied to image edge detection based on gradient algorithm,and the actual measurement precision is increased by modifying calibration coefficient.The advanced method in this paper is competent for measuring minuteness aperture in different environments.The experimental results indicate that the precision of measurement is 6 μm.It can satisfy the system requirements of non-contact,online,real time,higher precision and rapid speed,as well as stabilization.
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