Altitude recognition method, system, device and storage medium based on depth camera
A technology of depth camera and recognition method, applied in the field of visual inspection, can solve the problems of difficult modeling, difficult to control accuracy, and high modeling requirements, and achieve high recognition process convenience, good applicability, and good recognition accuracy. Effect
Active Publication Date: 2022-06-28
珠海视熙科技有限公司
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In the methods provided by the prior art, generally, the mathematical model of the actual height of the target and the internal and external parameters of the camera is first established according to the camera imaging principle, and then the internal parameters of the camera are obtained through camera calibration. Solve the problem, but in actual use, the position of the camera arrangement may change, and if the camera is tilted, it will produce obvious distortion, which will affect the accuracy of the actual height recognition, which requires high modeling , it is difficult to accurately model, and the accuracy is also difficult to control
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[0058] The depth camera is a new technology emerging in recent years. Compared with the traditional camera, the depth camera adds a depth measurement to the function, which makes it more convenient and accurate to perceive the surrounding environment and changes. At present, there are mainly binocular cameras, structured light cameras, and TOF cameras from the realization of depth cameras.
[0059] For example, TOF ranging is a technique that achieves precise ranging by measuring the round-trip flight time of light pulses between the transmitter / receiver device and the target object. The TOF camera calculates the distance by emitting light in a specific wavelength band, and then uses the sensor to receive the reflected beam of the object in the measured space and measure the flight time of the beam in the space, thereby obtaining the depth image of the measured space. TOF cameras can obtain grayscale images and depth images at the same time, and are widely used in 3D depth vis...
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The present application discloses a height recognition method, system, device and storage medium based on a depth camera, which are used for height recognition of a target to be detected and improve recognition accuracy. The method of the present application includes: establishing a calibration reference table, the calibration reference table records the mapping relationship between the height mark of the calibration image taken by the depth camera and the installation parameters of the depth camera; determining the actual height of the depth camera, And query the target installation parameters that match the actual use height in the calibration reference table; when the depth camera detects the target to be detected, the height of the target to be detected is determined according to the target height mark corresponding to the target installation parameters identify.
Description
technical field [0001] The present application relates to the technical field of visual inspection, and in particular, to a method, system, device and storage medium for height identification based on a depth camera. Background technique [0002] The depth camera is a new technology emerging in recent years. Compared with the traditional camera, the depth camera adds a depth measurement to the function, which makes it more convenient and accurate to perceive the surrounding environment and changes. At present, there are mainly binocular cameras, structured light cameras, and time of flight (English full name: Time of flight, English abbreviation: TOF) cameras from the realization of depth cameras. [0003] For example, TOF ranging is a technique that achieves precise ranging by measuring the round-trip flight time of light pulses between the transmitter / receiver device and the target object. The TOF camera calculates the distance by emitting light in a specific wavelength b...
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IPC IPC(8): G06T7/80G06T7/60
CPCG06T7/80G06T7/60G06T2207/30204
Inventor 陈家茹肖兵陈宇
Owner 珠海视熙科技有限公司