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Calibration device and method based on trinocular vision system of statistics characteristics

A technology of vision system and calibration method, which is applied in the field of calibration devices of trinocular vision systems, can solve problems such as inaccurate infrared calibration, and achieve the effect of solving inaccurate infrared calibration, good effect, and ensuring accuracy

Active Publication Date: 2018-11-13
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0003] In order to solve the above problems, the present invention proposes a calibration device and method for a trinocular vision system based on statistical features, which realizes joint calibration of visible light and infrared trinocular vision systems, and solves the technical problem of inaccurate infrared calibration

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  • Calibration device and method based on trinocular vision system of statistics characteristics
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  • Calibration device and method based on trinocular vision system of statistics characteristics

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Embodiment Construction

[0019] The technical solutions of the present invention will be further elaborated below according to the drawings and in conjunction with the embodiments.

[0020] The present invention proposes a calibration device for a trinocular vision system based on statistical features, such as figure 1 As shown, the size of the calibration board is 60×60cm, including the front and back sides, the front is the visible cursor calibration surface, the reverse is the infrared calibration surface, the visible cursor calibration surface is a black and white checkerboard calibration board, and the size is 8×8cm black and white squares , the infrared calibration surface includes a circular electric heating film, power supply and wires. The circular electric heating film is the calibration identification pattern of the infrared camera, with a diameter of 15mm, a resistance of 15Ω, and a power of 2W. The inner corner of the black and white checkerboard on the visible cursor surface is used as th...

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Abstract

The invention discloses a calibration device and method based on trinocular visions system of statistics characteristics. The calibration device of the trinocular vision system based on the statisticscharacteristics is composed of a visible light camera calibration surface and an infrared camera calibration surface; the calibration method of the trinocular vision system based on the statistics characteristics comprises the following steps: simultaneously shooting multiple groups of image sequences by the trinocular vision system with uninocular infrared and binocular visible light from multiple angles; firstly calibrating a binocular visible light camera; and then extracting a quasi-circle communication region in an infrared image by using gray statistics characteristics; and fitting a center point of the quasi-circle communication region according to the statistics characteristics; and replacing a right-eye image chessboard angular point by using the infrared center point, and performing secondary binocular calibration with the left-eye visible light image; and finally accomplishing the collaborative calibration of the trinocular vision system by using the geometric relation. Theprecise calibration of the trinocular vision system is realized, the operation is convenient, and the practical value is high.

Description

technical field [0001] The invention belongs to the technical field of computer vision, and in particular relates to a calibration device and method for a trinocular vision system based on statistical features. Background technique [0002] Camera calibration technology is an important technology in the field of visual measurement. The purpose is to determine the parameter model of the camera through a single or multiple images captured by the camera, and then obtain the internal and external parameters of the camera. Reality, visual monitoring and other fields have broad application prospects. With the deepening of research on thermal infrared imaging technology, people expect to be able to fuse visible light images and infrared images together, but ordinary binocular systems can no longer meet the current research needs, especially in military operations, electronic product detection, and resource detection. In terms of other aspects, traditional calibration devices are o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/10048G06T2207/10004
Inventor 李庆武张颖周亚琴马云鹏刘艳漆灿马啸川
Owner HOHAI UNIV CHANGZHOU
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