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Food volume measurement method based on electric field force model

A technology of volume measurement and electric field force, which is applied in the field of computer vision, can solve problems such as the inability to measure the target volume of concave polyhedron point clouds, and achieve the effect of reducing difficulty and simplifying the operation process

Active Publication Date: 2020-03-06
BEIHANG UNIV
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Problems solved by technology

[0007] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, aim at the problem that the convex hull method cannot measure the volume of the concave polyhedron point cloud target, and provide a food volume measurement method based on the electric field force method, using

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  • Food volume measurement method based on electric field force model
  • Food volume measurement method based on electric field force model
  • Food volume measurement method based on electric field force model

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] like figure 1 As shown, the present invention is a food volume measurement method based on the electric field force model, and the specific steps are as follows.

[0039] 1. Use the captured image sequence to reconstruct the sparse point cloud of the target

[0040] In the first step, the sparse point cloud of the target is reconstructed using the captured image sequence, which is specifically implemented as follows:

[0041](1) Extract the combined features of SURF, Harris and FAST of the feature points in the food image sequence: SURF is a common image feature descriptor, which has the invariance of rotation, scale transformation, and continuous reading, and has a certain degree of perspective transformation. The degree of stability, at the same time has a faster computing speed. The Harris feature and the FAST feature detect the corner po...

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Abstract

The invention relates to a food volume measurement method based on an electric field force model, and belongs to the field of computer vision. Firstly, a sparse point cloud model of a food is reconstructed by a multi-view geometric method. Secondly, a food electronic set is constructed and fitting on sparse point cloud is completed by virtue of the electric field force model. Finally, the sparse point cloud is subjected to triangular meshing according to an adjacency relation of the food electronic set, and a volume of a formed polyhedron is used as a point cloud volume so as to complete volume calculation. The food volume measurement method based on the electric field force model can overcome the defect of inaccuracy of calculating a volume of a target comprising a sunken region or a biconical region by an exsiting method, has an excellent effect of estimating volumes of various food targets, and by experimental verification, has a certain accuracy.

Description

technical field [0001] The invention relates to a food volume measurement method based on an electric field force model. With the help of the electric field force model, the fitting of the target point cloud is completed, thereby realizing the measurement of food volume, which has certain effectiveness and versatility. The invention belongs to computer vision field. Background technique [0002] With the development of the economy and the progress of society, the living standards of human beings are constantly improving, and the improvement in diet is particularly obvious. However, the prevalence of obesity and other diseases caused by poor diet is also increasing. The public pays more and more attention to the balance of diet. Traditional diet evaluation methods rely on individual subjective judgments. This subjective measurement is very inaccurate, and relying on personal subjective judgments will also lead to biased dietary analysis results. Direct measurement of food vo...

Claims

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Application Information

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IPC IPC(8): G01B7/00G01B7/004G06K9/62G06T7/62G06T7/80
CPCG01B7/00G01B7/004G06T7/62G06T7/80G06T2207/10028G06F18/2136
Inventor 袁丁胡晓辉魏晓东马浩张弘
Owner BEIHANG UNIV
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