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Human foot model reconstruction method based on characteristic light spots

A light spot and foot technology, applied in 3D modeling, details related to processing steps, image data processing, etc., can solve the problems of structural lighting influence, complex device structure, long scanning time, etc., and achieve shortened 3D reconstruction time, fast Good stickiness, saving equipment cost

Inactive Publication Date: 2018-06-29
上海开皇实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, the existing laser three-dimensional reconstruction measurement system based on the prior art has two disadvantages: first, the cost of the image sensor is usually extremely high to avoid interference; second, the scanning time is relatively long
The device structure of this method is complicated
At the same time, reconstruction based on structured lighting is easily affected by ambient light

Method used

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  • Human foot model reconstruction method based on characteristic light spots
  • Human foot model reconstruction method based on characteristic light spots
  • Human foot model reconstruction method based on characteristic light spots

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Embodiment 1

[0046] see Figure 1 to Figure 6 , specifically, in order to realize the foot model reconstruction method based on characteristic light spots, it is necessary to establish a measurement system first, and its structure is as follows figure 2 As shown, it comprises a glass plate 20 for standing on, two cameras 10, 11, a mirror 30 and lighting means (not shown in the figure). The bottom space between the glass plate 20 and the mirror 30 is sealed. In order to reduce the effect of reflected light, the inner walls of the enclosed space should be painted black. The bottom mirror 30 is parallel to the glass plate 20 . When the subject is on the glass plate 20, the soles of the feet are illuminated. The upper camera 10 has taken the picture of the surface of the foot, while the lower camera 11 has taken the image of the sole of the foot from the mirror.

[0047]In the actual measurement, due to the different posture habits of the subjects, the position and angle of the feet will ...

Embodiment 2

[0060] Another aspect of the present invention also provides a preferred embodiment, the foot model reconstruction method based on characteristic light spots in this embodiment also includes the step of judging the arch type, thereby realizing scientific evaluation and classification of the arch type of the human body, And build a more accurate three-dimensional model of the sole of the foot.

[0061] Wherein in this embodiment except establishing measurement system to obtain instep and sole image; And based on preset judgment condition after sole image is divided into arch of foot and flexion of foot part, also be provided with arch of foot judging step, please refer to Figure 7 , the judging process includes, using the morphological method to open the segmented arch image, remove noise and small connected areas, obtain the binary image of the arch area, and divide the foot with the toes removed along the length direction of the binary image. The bow image is equally divided...

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Abstract

The invention provides a human foot model reconstruction method based on characteristic light spots. The method comprises steps as follows: step A, a measuring system is established, and images of thesurface and the sole of a foot are acquired; step B, the image of the foot sole is segmented into a foot arch area and a foot curve area on the basis of preset judgement conditions; step C, pixel points in a foot arch image area and a foot curve image area are classified, and pixel point gray values of the foot curve part are acquired; step D, the pixel point height of the foot arch area is takenas 0, and the foot curve area pixel point height value is calculated on the basis of the image gray value parameter library; step E, three-dimensional reconstruction is formed by combining point cloud models of height values of the foot arch and foot curve areas, so that three-dimensional model reconstruction is realized accurately, besides, no expensive and complicated detection equipment is required in the reconstruction process, reconstruction is not easily affected by ambient light, functions of rapid cable wheel profile extraction, three-dimensional reconstruction of a cable shape and the like are realized, the equipment cost is saved, the three-dimensional reconstruction time is shortened, and reconstruction method is stable and has better robustness.

Description

technical field [0001] The invention relates to a three-dimensional model reconstruction technology, in particular to a technology for reconstructing a foot model based on characteristic light spots. Background technique [0002] In recent years, with the popularization of optical measurement technology, the non-contact foot automatic measurement of optical and computer technology has gradually been applied and popularized. At present, the existing technology has several technical directions in this field, such as foot measurement technology based on laser scanning, foot three-dimensional measurement technology based on computer vision and image processing technology, etc. Although these measurements of the prior art are valid and accurate. However, the existing technology only pays attention to the three-dimensional reconstruction of the instep, but ignores the establishment of the model of the sole of the foot, so that the three-dimensional reconstruction of the foot shap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00G06T2200/08
Inventor 杨广达
Owner 上海开皇实业有限公司