A image system and a new kind of image processing algorithm (watersheds algorithm) are introduced; First, we get the prime wheel tread data by a Charge Coupled Device (CCD), after the pretreatment of the data, we use the watersheds algorithm to get the trail wheel abrasion and peel off strips, than we will get the numerical value of the damage. The result of the experiment shows that the system can obtain the edge of the trail wheel abrasion and peel off strips; the algorithm is fast, stable and anti-jamming; the recognition system can satisfy the manufactory requirements.
It is difficult to measure micro-hole by means of project or light-sectioning. Irradiated by the collimated laser beam, a hole less than 0.5mm will result in an Airy spot because of diffraction, the Airy spot is measured by linear array CCD. A solution was given to define the diffusion state of diffraction image's edge, and two mathematical methods was presented to calculate inspection results in this paper. The first method is to integrate optoelectric signals from scanning sample spots, and the other is to calculate digital data with least square method by computer. Thus, the detection accuracy has been improved obviously.
This paper presents a new idea of Epipolar Slope. There are some feature points, e.g. the inflection point, on the epipolar line or curve. The homonymous points can be discovered in a couple images, and Feature Matching can be achieved as visible measurement. The Improved Hough Transform has been discussed in this paper because the standard quadratic curve may be discovered by the Improved Hough Transform as the pre-process of the Feature Matching.
This paper offers a method to inspect the positional accuracy of the geometric factors on the gear wheel frame of the bit drilling well automatically with a photoelectric image. One non-structured light is adopted as an illuminant. Two CCD cameras are installed at an accurate position. The perspective image can be input into a computer, and the parameters of outlines measured object can be found by means of the verge operator. Applying this method of an inverse perspective transformation, the space locations of those points, lines and planes can be determined in the 3D coordinate. According to require the relations of the position between the parameters on the object those values of relations can be calculated through solving space equations. In fact, it is an available way.
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