Fast laser scanning imaging simulation method based on light beam and triangular patch intersection

A technology of laser scanning imaging and laser scanning, which is applied in the field of computer simulation, can solve the problems of slow development of simulation technology and achieve the effect of shortening the development cycle and fast simulation speed

Inactive Publication Date: 2016-08-10
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] However, the development of simulation technology of domestic laser scanning imaging is very slow at present, and there are not many research results published publicly. analysis of characteristics

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  • Fast laser scanning imaging simulation method based on light beam and triangular patch intersection
  • Fast laser scanning imaging simulation method based on light beam and triangular patch intersection
  • Fast laser scanning imaging simulation method based on light beam and triangular patch intersection

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Embodiment Construction

[0040] The specific implementation manners of the present invention will be further described in detail below according to the accompanying drawings.

[0041] figure 1 It is a flow chart of fast simulation of laser scanning imaging based on intersecting beam and triangular surface. With reference to this flowchart, the concrete implementation process of the present invention can be divided into following four steps substantially:

[0042] Step 1: Use the 3D drawing software 3DMax to draw the triangular mesh model of the target space, and export it in OBJ and other file formats. The exported file contains information such as the position of the vertices of the triangular mesh model and the serial number of the vertices of the patch.

[0043] Step 2: Deriving the laser scanning equation from the laser scanning structure Wherein i is the row number of the laser beam, i=1,2..m, m is the number of laser scanning rows; j is the column number of the laser beam, j=1,2..n, n is th...

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Abstract

The invention discloses a fast laser scanning imaging simulation method based on light beam and triangular patch interaction. The method comprises steps as follows: a target space triangular mesh model is drawn firstly; a laser beam equation, angle resolution and a view field are deduced according to a laser scanning structure; a target model is imported, and target geometry is transformed in the view field range of an imaging system; finally, on the basis of a light beam and triangular patch interaction algorithm, a local search technology is introduced, a traverse range is reduced, the solving process of intersection conditions of laser beams and the target space triangular mesh model is accelerated, the distance between each intersection point and a laser emergent point is solved, and a target distance image is simulated rapidly. The simulation method is simple and high in speed and can be applied to design verification of a laser scanning imaging prototype and algorithm testing such as three-dimensional imaging, recognition, tracing and the like of a target, and the system development cycle is shortened.

Description

Technical field: [0001] The invention belongs to the field of computer simulation, and in particular relates to a fast simulation method for laser scanning imaging based on intersecting beams and triangular surfaces. Background technique: [0002] Three-dimensional laser scanning imaging was first researched by Lincoln Laboratory in the late 1970s under the funding of the US Department of Defense. It is mainly used for target detection in the military field, obstacle avoidance and terrain tracking for low-altitude aircraft. Domestically, the National University of Defense Technology, Huazhong University of Science and Technology, Zhejiang University and other units have participated in the development of laser scanning imaging systems and achieved certain results, but there is still a large gap with the world's leading level. The development of related technologies such as lasers, micro-motor systems, and detector components has promoted the development of a new generation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/367
Inventor 岳娟李范鸣葛军刘士建李明
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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