A multi-channel light source adaptive system based on information entropy and its working method

Abstract

The invention discloses a multi-path light source self-adaptation system based on information entropy. The multi-path light source self-adaptation system is characterized by comprising an image acquisition device which is connected with an upper computer, wherein the upper computer is connected with a lower computer; the upper computer comprises an image acquisition card; the lower computer is composed of a single chip microcomputer, a signal conditioning circuit and an LED (Light Emitting Diode) lamp; the image acquisition device is connected with the single chip microcomputer by the image acquisition card; the single chip microcomputer is connected with the LED lamp by the signal conditioning circuit. By adopting a starting system, an optimal image can be obtained by continuously adjusting the light intensity by utilizing a self-adaptation algorithm through the system. The optimal image obtained by the system is compared with a teaching image to find out that the image which is automatically obtained by the system is excellent. The multi-path light source self-adaptation system based on the information entropy has the characteristics of wide application range, good objectivity, accurate results, and reduction of calculation amount and information storage amount.

Description

technical field [0001] The invention relates to an information entropy-based multi-channel light source adaptive system and a working method thereof, belonging to the field of light source control of machine vision. Background technique [0002] With the continuous advancement of manufacturing technology, the requirements for measurement are also increasing. The traditional contact measurement method is easy to scratch the workpiece, and it is difficult to measure thin slices and porous parts. The image measurement method based on MMS camera and digital image processing technology is a non-contact measurement method, which has the advantages of high precision, fast, and easy automation. It has become an important development direction in the field of precision measurement, and related research is very active. When the image measurement method is used to measure the mechanical parts that do not emit light, in order to obtain high-quality images that are easy to process, it is...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a multi-channel light source self-adaptive system and its working method based on information entropy, which should be extensive, have good objectivity, and have accurate results, and reduce the amount of calculation and information storage. When it is necessary to measure the roughness of the workpiece surface, or to analyze the texture of the workpiece surface, the image under the illumination of a single-channel light source cannot meet the measurement requirements

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