Infrared and visible light camera synchronous calibration device and calibration method thereof

Abstract

The invention discloses an infrared and visible light camera synchronous calibration device and a calibration method thereof. The infrared and visible light camera is used for collecting infrared radiation to form synchronous infrared and visible light images. The infrared and visible light camera synchronous calibration device comprises a calibration plate; the calibration plate comprises a front plate and a back plate; the front plate is attached to the back plate, and the back plate is used for generating an infrared radiation source; the front plate comprises a shielding infrared area and an infrared transmission area; the shielding infrared area absorbs part of heat of the infrared radiation source so as to form a low-temperature area of the synchronous infrared and visible light images; the infrared transmission area transmits all heat of the infrared radiation source to form a high-temperature area of the synchronous infrared and visible light images. The infrared and visible light camera synchronous calibration device and the calibration method thereof provided by the invention can solve the problems of complexity and poor imaging effect of the existing infrared camera calibration device.

Description

technical field [0001] The invention relates to the technical field of infrared cameras, in particular to an infrared and visible light camera synchronous calibration device and a calibration method thereof. Background technique [0002] For the calibration of visible light cameras, a checkerboard calibration board with a certain shape and size is often used for calibration. [0003] However, unlike the visible light camera that can directly extract the image features of the calibration plate, the calibration of the infrared camera must be based on the feature extraction of the infrared radiation emitted by the measured object, and the synchronized infrared and visible light images of the measured object can be obtained through graphic processing. However, the uneven temperature distribution and different emissivity of objects in the scene lead to the disadvantages of low contrast and imperfect detail information of the simultaneous infrared and visible light images. Theref...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a synchronous calibration device for infrared and visible light cameras and a calibration method thereof, so as to solve the problems of complex synchronous calibration devices for existing infrared cameras and visible light cameras and poor imaging effects

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