Object three-dimensional model quick obtaining method based on active vision

A three-dimensional model, active vision technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as limited wide application, and achieve the effect of good robustness and high modeling accuracy

Inactive Publication Date: 2004-07-14
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods cannot avoid the problem of finding matching relationships between different images. Since image matching is a classic problem in the field of computer vision, this limits the wide application of such methods.

Method used

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  • Object three-dimensional model quick obtaining method based on active vision
  • Object three-dimensional model quick obtaining method based on active vision
  • Object three-dimensional model quick obtaining method based on active vision

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Embodiment

[0051] Figure 5 to Figure 7 It is the result schematic diagram of the method embodiment of the present invention. Firstly, the image of the object with grating and the image of the object with only texture are taken from different sides of the object (such as Figure 5 Shown); then reconstruct the model of the points on each side of the object according to the method provided by the present invention, and map the texture onto the reconstructed model (such as Image 6 shown); finally, data fusion is performed on the model of each side of the reconstructed object to restore a complete three-dimensional object model (such as Figure 7 shown). The accuracy of the object reconstruction model of the method of the present invention is 0.5 mm, which can fully meet the recovery accuracy requirements of general object models.

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Abstract

The process of obtaining 3D model of object quickly based on active vision includes calibrating the light planar equation of the grating planes of the projector under reference coordinate system and the projecting transformation matrix from the reference coordinate system to the camera; taking one frame of object picture with grating and one frame with grains only; inputting the images into computer; extracting the edges of grating from the image automatically or via man-machine interaction and clustering; finding out the 3D coordinates of all the grating edge points of object in the reference coordinate system via reverse projection to obtain the 3D model of the visible object surfaces; performing triangular decomposition of 3D points on object surface and mapping the grain information onto the 3D model; rotating the object in certain angle before repeating the said steps to obtain one other 3D model of other side; and data fusion to obtain complete 3D model of the object.

Description

technical field [0001] The invention relates to computer-aided automatic modeling and measurement, in particular to a method for quickly acquiring a three-dimensional model of an object based on active vision. Background technique [0002] In many areas of our daily life, it is often necessary to model objects in three dimensions. 3D modeling technology is widely used in many fields such as robot obstacle recognition and navigation, virtual reality, 3D identification, medical plastic surgery, digital casting, 3D sculpture, industrial design, rapid manufacturing, archaeology, cultural relic protection, e-commerce, interactive entertainment, etc. application prospects. [0003] The traditional modeling method is generally completed manually with the help of 3D processing software such as AutoCAD and 3DS MAX. This method is very time-consuming, and the accuracy of the built model is easily affected by human factors. Another type of method is to obtain object models by means o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 吴福朝胡占义王光辉
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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