Image processing method and device, calibration board and computer readable storage medium
An image processing and calibration board technology, applied in the field of image processing, can solve the problems of poor accuracy of distortion correction coefficient, unsatisfactory correction effect, post-processing or advanced application effects, etc., and achieve good results.
Pending Publication Date: 2021-07-23
SZ DJI TECH CO LTD
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But in some applications, no distortion correction will affect other post-processing or advanced applications, such as image stitching, image fusion, etc., which puts forward the demand for distortion correction of infrared images
[0003] In the existing method, the distortion correction coefficient is not obtained for the infrared image acquisition device with a small field of view, and the distortion correction coefficient is obtained through calibration for the infrared image acquisition device with a large field of view, but the accuracy of the obtained distortion correction coefficient is poor. Lead to unsatisfactory correction effect and affect the use
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[0013] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings.
[0014] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the / the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the terms "consists of" and / or "comprising", when used in this specification, identify the presence of stated features, integers, steps, operations, elements and / or parts, but do not exclude one or more other Presence or addition of features, integers, steps, operations, elements, parts and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items. The multiple mentioned in the embodiments of the present application includes at least two, and the at least two may b...
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The invention discloses an image processing method and device, a calibration board and a computer readable storage medium, and the method comprises the steps: obtaining an image, shot by infrared image collection equipment, of the calibration board, and enabling the calibration board to comprise a plurality of heat sources which are arranged at equal intervals; determining a target pixel point corresponding to each heat source on the image of the calibration plate; target pixel points corresponding to every four adjacent heat sources on the image of the calibration plate are connected to form a quadrangle, and a checkerboard image is generated based on the obtained quadrangle; and analyzing the checkerboard image based on the distortion correction model to generate a distortion correction coefficient of the infrared image acquisition device. According to the scheme of the application, the checkerboard image is generated according to the image shot by the infrared image acquisition device for the calibration plate including the heat source, so that the distortion correction model can be adopted to analyze the generated checkerboard image to obtain the accurate distortion correction coefficient of the infrared image acquisition device; therefore, the distortion correction of the infrared image acquired by the infrared image acquisition equipment can be realized well.
Description
technical field [0001] The present application generally relates to the technical field of image processing, and more specifically relates to an image processing method, device, calibration board, and computer-readable storage medium. Background technique [0002] The field of view (FOV) of infrared images is smaller than that of visible light images. Therefore, the visible field of view in an infrared image is limited. In order to maximize the use of the field of view of infrared images, often Distortion is not corrected. However, in some applications, no distortion correction will affect other post-processing or advanced applications, such as image stitching, image fusion, etc., which puts forward the demand for distortion correction of infrared images. [0003] In the existing method, the distortion correction coefficient is not obtained for the infrared image acquisition device with a small field of view, and the distortion correction coefficient is obtained through cal...
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IPC IPC(8): G06T5/00G06T7/00G06T1/20G06T1/60
CPCG06T7/0002G06T1/20G06T1/60G06T2207/10048G06T5/80
Inventor 鄢蕾
Owner SZ DJI TECH CO LTD