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Sparse grid-oriented three-dimensional foot type fast acquiring method based on standard foot deformation

A technology of sparse grids and acquisition methods, applied in image data processing, measurement devices, 3D modeling, etc., can solve problems such as time-consuming, labor-intensive, and large post-processing time

Inactive Publication Date: 2006-05-17
ZHEJIANG UNIV
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Problems solved by technology

The direct impact of this kind of motion noise makes the user need to spend a lot of post-processing time, which is particularly time-consuming and labor-intensive.

Method used

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  • Sparse grid-oriented three-dimensional foot type fast acquiring method based on standard foot deformation
  • Sparse grid-oriented three-dimensional foot type fast acquiring method based on standard foot deformation
  • Sparse grid-oriented three-dimensional foot type fast acquiring method based on standard foot deformation

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Embodiment Construction

[0026] For the acquisition method of the sparse grid of the three-dimensional foot shape, refer to the content of the invention of the application publication number CN 1 5 4 4 8 8 3 A. After the sparse grid of the three-dimensional foot shape is obtained, the feet in the crowd are classified. If the foot shape to be measured is relatively standard, standard feet of different age groups and genders are selected from the standard foot library, and then deformed.

[0027] Such as Figure 4 As shown in , the steps of the method of fast acquisition of 3D foot shapes based on standard foot deformation for sparse grids are as follows:

[0028] 1) Establish a standard foot shape library: Use laser scanning to obtain the three-dimensional foot shape in the foot shape library. According to different ages, genders, and foot lengths, select some people with regular foot shapes to scan to form foot shapes. type library.

[0029] 2) Establish three-dimensional coordinates, select the inp...

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Abstract

A method for obtaining 3D foot shape quickly based on standard foot variant by utilizing sparse grid includes setting up, standard foot shape library, setting up 3D coordinate for structuring foot length vector, rotating sparse grid foot model to let said vector be parallel to Y axle, selecting foot length and width information from said library, adjusting posture and position of sparse grid foot model to let it distribute uniformly around standard foot model, finding out corresponding points of two models, revising control top point of sparse grid foot model and using revised point to rebuild sparse grid foot model for obtaining 3D foot shape data.

Description

technical field [0001] The invention relates to a rapid modeling method of a three-dimensional foot shape, in particular to a method for rapidly acquiring a three-dimensional foot shape based on a standard foot deformation and facing a sparse grid. 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 main d...

Claims

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Application Information

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IPC IPC(8): G06T17/00G01C11/00
Inventor 潘云鹤耿卫东高飞徐兴华王毅刚
Owner ZHEJIANG UNIV
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