A method and device for obtaining calibration parameters

Abstract

The invention relates to a method and a device for acquiring a correction parameter. The method comprises the steps of establishing coordinate systems: establishing a first physical coordinate system of a preset object, a second physical coordinate system and a corresponding first pixel coordinate system of a first camera, a third physical coordinate system and a corresponding second pixel coordinate system of a second camera, a fourth physical coordinate system and a corresponding third pixel coordinate system disposed between the second physical coordinate system and the third physical coordinate system; acquiring a first image of the preset object by use of the first camera, and meanwhile acquiring a second image of the preset object by use of the second camera; acquiring a third image which overlaps with the second image from the first image, and acquiring a fourth image which overlaps with the first image from the second image; and calculating a first parameter, used for correcting the image, of the first camera and a second parameter, used for correcting the image, of the second camera according to the established coordinate systems, the third image and the fourth image. The embodiment lays a foundation for subsequent image correction.

Description

technical field [0001] This article involves but is not limited to optical technology and terminal technology, especially a method and device for obtaining correction parameters. Background technique [0002] Depth information can be obtained by using a binocular camera, but due to a certain distance between the two cameras in the binocular camera, the field of view between the two cameras cannot completely overlap, so that when two cameras are used to shoot a point at the same time, The positions of this point on the images captured by the two cameras are not the same, which brings difficulties to the application of the binocular camera in the later stage. Therefore, it is necessary to correct the images captured by the two cameras in the binocular camera, while in the related art No effective correction method is given. Contents of the invention [0003] In order to solve the above problems, the embodiment of the present invention proposes a method for obtaining correct...

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Problems solved by technology

[0002] Depth information can be obtained by using a binocular camera, but due to a certain distance between the two cameras in the binocular camera, the field of view between the two cameras cannot completely overlap, so that when two cameras are used to shoot a point at the same time, The positions of this point on the images captured by the two cameras are not the same, which brings difficulties to the application of the binocular camera in the later stage. Therefore, it is necessary to correct the images captured by the two cameras in the binocular camera, while in the related art There is no effective correction method given

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