Brightness modulation scannerless laser three-dimensional imaging method
A technology of laser three-dimensional imaging and brightness modulation, which is applied in the radio wave measurement system, electromagnetic wave re-radiation, utilization of re-radiation, etc., can solve the problems of poor real-time performance, and achieve compact structure, convenient use, and improved system reliability Effect
Active Publication Date: 2012-01-18
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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[0003] In view of the above analysis, the present invention aims to provide a three-dimensional imaging method of brightness modulation non-scanning laser to solve the problems of poor real-time performance in the existing non-scanning laser imaging method
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[0027] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention. For the sake of clarity and simplicity, detailed descriptions of known functions and constructions in the devices described herein will be omitted when it may obscure the subject matter of the present invention.
[0028] In order to facilitate the understanding of the methods described in the embodiments of the present invention, first in conjunction with the attached Figures 1 to 6 The devices involved in the method are described in detail.
[0029] Such as figure 1 as shown, figure 1 It is a schematic structural diagram of the system described in the embodiment of the present invention, which may specifically include: a laser power supply 1, a pulse ...
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The invention discloses a brightness modulation scannerless laser three-dimensional imaging method. The method comprises the following steps of: irradiating a target object by using laser emitted from a pulse laser after the laser passes through a laser beam expander; reflecting the laser to enter a distance-measuring and receiving lens and an imaging and receiving lens by using the target object; obtaining the distance of a certain point of a target after a signal received by the distance-measuring and receiving lens passes through a distance measuring processor, and generating an image intensifier gating signal according to the distance; making the signal received by the imaging and receiving lens enter two enhanced digital cameras at the same time after passing through a two-channel beam splitter; respectively performing constant modulation and linearly-increased modulation on the gains of two image intensifiers; and simultaneously acquiring image data output by the two cameras, inputting the two images into a real-time image processor after preprocessing to obtain the distance information of each point of the target, mapping the distance information into a pseudo-color for displaying, and simultaneously storing the distance data. By adopting the method, the imaging distance is long, the imaging precision is high, the reliability is high, the real time is high, and all-weather work can be achieved.
Description
technical field [0001] The invention relates to the technical field of laser three-dimensional imaging, in particular to a brightness modulation non-scanning laser three-dimensional imaging method. Background technique [0002] At present, there are several non-scanning laser imaging methods, the first one is the method of using continuous wave modulation for three-dimensional imaging. Since this method requires high-speed modulation of the semiconductor laser, there is a contradictory relationship between imaging accuracy and imaging distance, and it takes several laser shots to obtain a three-dimensional image. The real-time performance is not good, and it is not conducive to the measurement of moving targets. The second is the amplification of an area array detector with a distance measurement function, which is limited by the technical level of the existing area array detector. The third is the method of slice distance gating, which has a complex splicing algorithm and ...
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IPC IPC(8): G01S17/89
Inventor 刘波陈念江耿林张颖曹昌东
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP