A 3D dimension measurement method based on a fixed monocular camera
A monocular camera, three-dimensional space technology, applied in image analysis, image enhancement, image data processing and other directions, can solve the problems of limited application scope, low measurement accuracy, and cumbersome measurement methods, and achieve the effect of improving measurement accuracy.
Active Publication Date: 2022-05-27
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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[0006] The invention provides a three-dimensional space size measurement method based on a fixed monocular camera, which solves the problems of low measurement accuracy and cumbersome measurement methods with limited scope of application in the related art
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[0042] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0043] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0044] It should be noted that the te...
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The present invention relates to the technical field of image monitoring, and specifically discloses a method for measuring three-dimensional space dimensions based on a fixed monocular camera, which includes: acquiring internal camera parameters of the fixed monocular camera through camera calibration; acquiring three-dimensional control points The video image of the target; according to the internal parameters of the camera, the lens distortion correction is performed on the video image containing the three-dimensional control point target; the image coordinates and the corresponding object space coordinates of the three-dimensional control point target in the video image after lens distortion correction are obtained; according to the three-dimensional The image coordinates of the control point target and the corresponding object space coordinates are used to calibrate the camera extrinsic parameters of the fixed monocular camera; the video image to be measured is calculated and analyzed according to the calibration of the camera extrinsic parameters, and the three-dimensional space size in the video image to be measured is obtained. The three-dimensional dimension measurement method based on the fixed monocular camera provided by the present invention can improve the measurement accuracy, and can be applied to various cameras.
Description
technical field [0001] The invention relates to the technical field of image monitoring, in particular to a three-dimensional space size measurement method based on a fixed monocular camera. Background technique [0002] At the scene of a criminal crime or a traffic accident, it is very important to obtain information about the length, width, height, and height of the three-dimensional spatial dimensions of objects such as people, vehicles, and trace evidence. Surveillance video is the most intuitive and easiest source of evidence to obtain such information. Due to cost reasons, security monitoring is often is a single appearance, and the image captured by the monocular camera is the imaging of a space object in a two-dimensional plane, and three-dimensional space information cannot be obtained without auxiliary measurement. [0003] For the measurement of the size of the image captured by the monocular camera, most of the existing methods simply use the linear proportional ...
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IPC IPC(8): G06T7/60G06T7/80G06T5/00
CPCG06T7/60G06T7/80G06T2207/10016G06T5/80
Inventor 宋耀鑫李平凡严永高岩李毅赵冬
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY