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Automobile morphology reconstruction system and method based on triangular array affine invariants

An affine invariant, triangle technology, applied in measurement devices, instruments, optical devices, etc., can solve problems such as low efficiency

Pending Publication Date: 2020-07-07
JILIN UNIV
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Problems solved by technology

[0003] The present invention aims to solve the problems that the existing non-contact system requires multi-image calibration and low efficiency in the process of automobile shape reconstruction, and designs a vehicle shape reconstruction system and method based on triangular array affine invariants, which realizes 3D Freedom Reconstruction of Feature Points of Automobile Shape

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  • Automobile morphology reconstruction system and method based on triangular array affine invariants
  • Automobile morphology reconstruction system and method based on triangular array affine invariants
  • Automobile morphology reconstruction system and method based on triangular array affine invariants

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Embodiment Construction

[0072] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0073] refer to Figure 1 to Figure 7 , the vehicle shape reconstruction system based on the triangular array affine invariant includes a camera 1, a laser surface projector 2, a two-dimensional target 3, a two-dimensional target fixing seat 4, a connecting clip 5 and a tripod 6;

[0074] The tripod 6 is a height-adjustable tripod. The tripod 6 is placed on the ground. The camera 1 is a wide-angle industrial camera equipped with a narrow band filter. The camera 1 is fixedly connected with the bolt on the top of the tripod 6 through the threaded hole at the bottom. , the two-dimensional target holder 4 is a cuboid part processed by steel plate, the upper surface is processed with slender grooves, the two-dimensional target holder 4 is placed on the level ground, and the two-dimensional target 3 is made of a rectangular steel plate with a through hole The surface ...

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Abstract

The invention discloses an automobile morphology reconstruction system and method based on a triangular array affine invariant, and aims to solve the problem of automobile morphology detection based on the triangular array affine invariant. The system is mainly composed of a camera (1), a laser projection instrument (2), a two-dimensional target (3), a two-dimensional target fixing base (4), a connecting clamp (5) and a tripod (6). The surface of the two-dimensional target (3) is pasted with an array triangular pattern capable of generating infinite point and area ratio characteristics. The automobile morphology reconstruction method based on the triangular array affine invariant is composed of the steps of image acquisition, affine correction, automobile body point reconstruction and thelike, and the automobile morphology reconstruction system and method based on the triangular array affine invariant are simple in structure and reliable in performance.

Description

technical field [0001] The invention relates to a vehicle detection device and a detection method, more specifically, it is a vehicle shape reconstruction system and method based on a triangular array affine invariant. Background technique [0002] In order to ensure the safe driving of automobiles, the measurement of automobile topography plays a vital role in the detection field of automobile overloading and overrunning. Measurement accuracy, measurement efficiency, etc. will have a significant impact on the detection results. At present, the common measurement systems are divided into contact type and non-contact type. Due to the poor convenience of contact measurement, easy to scratch the surface of the measured object and other factors, the application range of non-contact measurement is wider. Non-contact measurement often requires the target to calibrate the internal and external parameters of the camera, which makes the system structure complex. How to adopt non-c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/24Y02T10/40
Inventor 徐观沈慧陈熔苏建张立斌刘玉梅戴建国单红梅林慧英李晓韬陈芳朱尧平
Owner JILIN UNIV
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