Method for rapidly acquiring object three-dimensional form

A technology of three-dimensional shapes and objects, which is applied in the field of computer vision, can solve the problems of object texture and material limitations, slow speed, and inability to detect objects with complex shapes, etc., to solve the interference problem of texture and shadow, low cost, and high-precision adaptation surface Effect

Inactive Publication Date: 2009-08-19
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect that this new technology solves overall are its ability to create precise shapes quickly at an affordable price while also being able to handle complicated surfaces like faces or clothes without getting stuck together due to their intricate nature. This makes it ideal for various applications such as manufacturing processes, simulation models, medical imagery analysis, virtual reality simulations, computer graphics designers, among others.

Problems solved by technology

Technological Problem addressed in this patents relates to achieving stable and efficient depth scanning through various techniques like laser scans and digital cameras. Structural Light Interferometry (SLI), phase retrieval, and time division modulated optical cohering technique provide unique benefits compared to existing methods. These advances aim towards enhancing the efficiency and effectiveness of 3 dimensional imagery recognition.

Method used

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  • Method for rapidly acquiring object three-dimensional form
  • Method for rapidly acquiring object three-dimensional form
  • Method for rapidly acquiring object three-dimensional form

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Embodiment Construction

[0032] Such as figure 1 As shown, the system of the present invention consists of a projector, a digital camera and a horizontal platform for placing objects.

[0033] For the convenience of deeply understanding the technical contents of the present invention, below in conjunction with figure 2 The present invention will be described in detail. 0 c is the optical center coordinates of the camera, (X c , Y c ,Z c ) is the camera coordinate system, O p is the optical center coordinates of the projector, (X p , Y p ,Z p ) is the camera coordinate system, and the corresponding point of a point P on the object on the camera imaging plane is P'. To solve the problem that traditional edge detection methods are easily affected by textures and shadows, we adopt a spatiotemporal approach to find projected line edges in the image sequence I(x, y, t). The object is on the horizontal line L top and horizontal lower line L bot Between, to obtain the three-dimensional correspond...

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Abstract

The invention relates to a method for quickly acquiring the three-dimensional shape of an object. A color multi-stripe mode structured light is projected on an object by a projector, the stripes are led to move a distance in the scene and the distance is more than the width of a sub-stripe. A camera is used for photographing an image sequence simultaneously and according to the deformation of the stripes on the object and relativity of time, and the three-dimensional shape of the object is calculated. The method for acquiring the three-dimensional shape includes the following specific steps of: step A: generating color multi-stripe projection mode; step B: projecting the generated color multiple stripes on the surface of the object by the projector; step C: calculating the time in which an edge template passes through each pixel; and step D: calculating the three-dimensional coordinate of each pixel. The quick and high-precision method provided by the invention for acquiring the three-dimensional shape can carry out three-dimensional modeling on an object with complicated shape, solves the interference problem of texture and shadow, is characterized by low cost, quickness, high precision and wide application range and has very important significance to industrial detection, animation industry, physical profile modeling, biomedicine, and the like.

Description

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Claims

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Application Information

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Owner SOUTHEAST UNIV
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