Three-dimensional foot type measuring and modeling method based on specific grid pattern

A technology of grid pattern and modeling method, which is applied in 3D modeling, photo interpretation, image data processing, etc., to achieve the effect of facilitating popularization and use, low hardware cost, and avoiding low precision

Inactive Publication Date: 2004-11-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From a technical point of view, these 3D foot shape measurement systems currently only generate 3D scattered point data

Method used

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  • Three-dimensional foot type measuring and modeling method based on specific grid pattern
  • Three-dimensional foot type measuring and modeling method based on specific grid pattern
  • Three-dimensional foot type measuring and modeling method based on specific grid pattern

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Example Embodiment

[0018] The hardware part of the present invention consists of 6 to 8 digital cameras or camcorders and a computer, and is fixed on a circular platform with a radius of about 80 cm. Each digital camera (or camcorder) communicates with the computer through a USB data transmission interface. Connected, the collected digital images are calculated and processed by a software system running on a computer for stereo vision, and finally a three-dimensional foot model is constructed.

[0019] The specific steps of measurement and modeling of the present invention:

[0020] 1) The calibration of a digital camera or video camera is to take pictures of objects with known three-dimensional spatial information, and then estimate the internal and external parameters of the digital camera or video camera, including the focal length, based on their pixel coordinate positions in the collected two-dimensional images , The relative spatial position and relative orientation angle between the two camer...

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Abstract

The invention is a 3D foot shape measuring and modeling method based on special mesh pattern, wearing the socks printed with meshes on the foot, then synchronously shooting by many digital cameras, ensuring the corners of each mesh shot by as least two cameras, then based on the principle of solid visual and optical imaging, reconstructing 3D positions of all the corners of the meshes; on this basis, utilizing these reconstructed 3D positions, obtaining the 3D meshes covering the foot by fitting, and finally by the restriction of the 3D meshes on the spatial positions of a standard foot, by deformation modeling method, establishing a special model for the 3D foot shape and calculating the parameters of the 3D foot shape. It has low cost, integrating hardware device with software system. It has strong operability and low implementation cost, beneficial to popularization.

Description

technical field [0001] The invention relates to a fast three-dimensional foot shape measurement and modeling method, in particular to a three-dimensional foot shape measurement and modeling method based on a specific grid pattern. Background technique [0002] As far as the acquisition of foot shape data is concerned, the current mainstream technical approach is based on optical systems, including: [0003] 1) Laser-based triangulation technology. It is a very popular three-dimensional data acquisition method at present, with high precision and wide application range, but the equipment is expensive. The main components are high-speed camera, laser transmitter, signal processor, high-precision stepping motor, etc. [0004] 2) Measurement technology based on structured light. The main components are dedicated projectors, cameras, etc. The accuracy is medium, and the price is medium. [0005] 3) Measurement technology based on computer vision. The...

Claims

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Application Information

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IPC IPC(8): G01C11/12G06T17/00
Inventor 潘云鹤耿卫东门素琴黄炎丁磊
Owner ZHEJIANG UNIV
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