Close-range photogrammetry colorful three-dimensional scanning laser radar

A three-dimensional scanning and color laser technology, applied in the field of surveying and mapping remote sensing, can solve the problems of insufficient data processing and lack of color information, and achieve the effect of improving feasibility, reducing volume and weight, and enhancing color resolution ability

Active Publication Date: 2014-08-06
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of a single laser wavelength, only the intensity value of a single wavelength can be obtained, which lacks the most intuitive color information for people, and has obvious deficiencies in object recognition and later data processing.

Method used

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  • Close-range photogrammetry colorful three-dimensional scanning laser radar
  • Close-range photogrammetry colorful three-dimensional scanning laser radar
  • Close-range photogrammetry colorful three-dimensional scanning laser radar

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Embodiment Construction

[0016] see figure 1 The close-range photogrammetric color laser radar of the embodiment of the present invention includes: a color laser light source 1, a transmitting optical system 2, a scanning system 3, a receiving optical system 4, a laser spectrum detection and ranging circuit 5, a data acquisition and timing controller 6, Computer data processing unit 7. The data acquisition and timing controller 6 is respectively connected with the color laser light source 1 , the scanning system 3 , the laser spectrum detection and ranging circuit 5 and the computer data processing unit 7 . During specific implementation, the laser spectrum detection and distance measuring circuit 5, the data acquisition and timing controller 6, and the computer data processing unit 7 can be implemented using existing technologies, for example, the computer data processing unit 7 can use PCs and other equipment.

[0017] The color laser light source 1 may include green or yellow pulsed laser light so...

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Abstract

A close-range photogrammetry colorful three-dimensional scanning laser radar comprises colorful laser light sources, a transmission optical system, a scanning system, a receiving optical system, a laser spectrum detection and distance-measuring circuit, a data collection and time sequence controller and a computer data processing unit. The colorful laser light sources comprise a red light pulse laser light source, a green or yellow light pulse laser light source, a blue light pulse laser light source and an infrared pulse laser light source, lasers emitted by the colorful laser light sources are synthesized into a laser beam through the transmission optical system, and are incident to the scanning system, colorful laser three-dimensional linear scanning is performed on a target ground object through the scanning system, echo signals formed by scanning are captured by the optical receiving system, intensity of pulse lasers obtained by detection of the laser spectrum detection and distance-measuring circuit and distance information of the target ground object are transmitted to a data collecting and time sequence controller for multi-channel data collection and time sequence calculation, and the result is output to the computer data processing unit.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping remote sensing, in particular to a close-range photogrammetry color three-dimensional scanning laser radar. Background technique [0002] Ground-based close-range photogrammetry lidar technology usually detects in a single-wavelength manner, and realizes laser three-dimensional scanning imaging detection through rotating mirrors and base rotation. However, due to the limitation of a single laser wavelength, only the intensity value of a single wavelength can be obtained, lacking the most intuitive color information for people, and there are obvious deficiencies in ground object recognition and later data processing. Contents of the invention [0003] The purpose of the present invention is to provide a close-range photogrammetry color laser radar technology. Based on the single infrared laser light source of the existing ground-based lidar, this technology has been developed to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89
CPCG01S7/481G01S7/483G01S17/89
Inventor 龚威宋沙磊祝波史硕李德仁
Owner WUHAN UNIV
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