Pulse laser active strobing scanning 3D imaging device and method
A pulsed laser and imaging device technology, which is applied in the field of pulsed laser active gating scanning 3D imaging devices, can solve the problems of attenuation, inability to accurately scan the object to be measured, and whitening of the camera imaging screen, so as to improve the signal-to-noise ratio. Effect
Inactive Publication Date: 2019-07-26
哈尔滨伽马光电科技有限公司
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Problems solved by technology
Once encountering fog and haze weather, due to the serious backscattering of the tiny particles in the air, the attenuation of the laser beam emitted by the laser in the air will be very serious, causing the imaging screen of the camera to become white, and cannot accurately scan to the target area. Measured object
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[0023] In order to facilitate the understanding of the present invention, the structure, working process and working principle of the device of the present invention will be described more fully below with reference to the relevant drawings.
[0024] refer to figure 1 As shown, the pulsed laser active strobe scanning 3D imaging device has a structure including a camera unit (1), a linear laser (2), a horizontal turntable (3), a controller (4) and a processor (5) . The camera unit (1) and the linear laser (2) are respectively installed and fixed on the horizontal turntable (3). The components included in the camera unit (1) are: an optical lens (7), a narrow-band filter (8), a gate (9) and a camera board (6).
[0025] Described a kind of pulsed laser active gating scanning 3D imaging device, its working procedure is as follows:
[0026] The controller (4) outputs the control signal (13) according to the communication signal (15) given by the processor (5) to control the line...
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The invention discloses a pulse laser active strobing scanning 3D imaging device and method. The pulse laser active strobing scanning 3D imaging device comprises a camera shooting unit, a linear laserdevice, a horizontal rotating table, a controller and a processor. The camera shooting unit comprises an optical lens, a narrow-band filter, a strobing gate and a camera shooting assembly machine; the linear laser device can emit linear pulse laser beams at a certain frequency; the controller is used for controlling the multiple laser pulse beams to be distributed into slices at different distances within certain set time according to a certain rule and controlling the strobing gate to be opened at the moments corresponding to echoes of the pulse laser beams; and the linear laser device emitsthe laser beams which hit a to-be-measured object, the echoes are reflected on the camera shooting unit and form an image, and the distance of the to-be-measured object is obtained according to the formed image. The influence of backscattering of space dust fog particles on laser scanning ranging can be weakened greatly, the defect of high requirements of laser scanning ranging for environment air conditions is overcome, and meanwhile the advantages of continuous scanning imaging, large detection range, high signal-to-noise ratio and the like are achieved.
Description
technical field [0001] The invention relates to the field of laser scanning imaging, in particular to a pulsed laser active gating scanning 3D imaging device and method. Background technique [0002] In recent years, with the emergence of driverless cars and robots, laser ranging radar technology has also developed rapidly as a necessary accessory. Among them, low-cost lidar with CMOS or CCD cameras as information acquisition units is rapidly emerging in the market. At present, the mainstream laser ranging radars on the market have high requirements on the environment. Once encountering fog and haze weather, due to the serious backscattering of the tiny particles in the air, the attenuation of the laser beam emitted by the laser in the air will be very serious, causing the imaging screen of the camera to become white, and cannot accurately scan to the target area. measuring object. Contents of the invention [0003] The purpose of the present invention is to provide a p...
Claims
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Login to View More IPC IPC(8): G01S17/89G01S7/481
CPCG01S7/4817G01S17/89
Inventor 孙芳魁刘超
Owner 哈尔滨伽马光电科技有限公司