A Kind of Object Level Measuring Method Based on Image Processing

摘要

In order to accurately measure level from object to image acquisition devices, this paper put forward a kind of new non-contact level measuring method based on image process and its prototype equipment. Through a series of image preprocessing for captured image such as difference, grayness, binari-zation and thinness, original image is preferable to measure than before. The relation between image pixel value and tilt angle is acquired via mathematical derivation, as well as the distance formula is gained through fitting function. A large amount of data is gathered in the experiment while error analysis of these results is also offered, in which testified that the measuring method for object distance achieved expected effect.