Method, device, equipment, and storage medium for measuring three-dimensional topographic features of object surface

Abstract

The invention discloses a method, device, equipment and storage medium for measuring three-dimensional topographic features of an object surface. The method includes: acquiring M color images corresponding to M height points; extracting color images at different positions based on an adaptive centroid extraction algorithm The centroids of N optical fiber spots; wherein, the fiber bundles measured in parallel are composed of N optical fibers; the target image corresponding to the position of the optical fiber spot in the color image is intercepted according to the centroid of the spot; the target image is converted into a color space to obtain the same The wavelength-related hue parameter H value; filter the hue parameter H value to obtain the corresponding standard H value; according to the standard H value and the height corresponding to the standard H value, obtain the H value-height calibration curve of the optical fiber; The measured target object is substituted into the input of the calibration curve, and the three-dimensional topographical characteristics of the object surface of the target to be measured are measured. The measurement error caused by the transverse crosstalk between adjacent optical fibers can be corrected, and the measurement of the three-dimensional topography of the object surface can be realized.

Description

technical field [0001] The invention relates to the field of optical detection, in particular to a method, device, equipment and storage medium for measuring three-dimensional topographic features of an object surface. Background technique [0002] With the advancement of science and technology and the development of productivity, there is a great demand for the measurement of the three-dimensional shape of the surface of objects in various fields, especially in the fields of intelligent manufacturing, aerospace, cultural relics protection, medical and health, distance education and other fields. application. Nowadays, the measurement of three-dimensional surface topography of objects has become a focus of attention of experts and scholars at home and abroad. need. [0003] Disadvantages of prior art: [0004] 1. At present, as the derivation and development of laser confocal scanning microscopy technology, color confocal measurement technology is also widely used in the ...

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Problems solved by technology

However, in this paper, the filtering of the H value with a large error is not considered, and the centroid of the color image to be processed cannot be automatically extracted for calibration, the measurement accuracy is low, and the algorithm can only be applied to single-point color confocal measurement, not Applied to parallel color confocal measurement, low measurement efficiency

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