Multi-grating projection binocular vision tongue body surface three-dimensional integral imaging method
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A binocular vision and overall imaging technology, applied in the field of 3D imaging, can solve the problems of incompleteness, inaccurate acquisition, complex 3D biological features of the tongue, etc., and achieve the effect of fast acquisition and reduced noise interference.
Inactive Publication Date: 2018-05-11
TIANJIN UNIV OF TRADITIONAL CHINESE MEDICINE
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However, the three-dimensional biological characteristics of the tongue are complex, and the single projector and monocular camera can only collect the topographic feat
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Embodiment 1
[0045] In order to solve the problems in the background technology, it is necessary to develop a multi-grating projection binocular vision tongue surface three-dimensional overall imaging method, see figure 1 and figure 2 , the method includes the following steps:
[0046] 101: Build a tongue surface topography acquisition system composed of a dual grating projector and a binocular camera;
[0047] Among them, see figure 1 , the tongue surface topography acquisition system includes: a first projector 1 , a second projector 2 , a first camera 3 , a second camera 4 , a first light source 5 , and a second light source 6 . The first light source 5 and the second light source 6 act as a double grating projector. The first camera 3 and the second camera 4 are used as binocular cameras.
[0048] The first projector 1 corresponds to the first camera 3 and the first light source 5 , and similarly, the second projector 2 corresponds to the second camera 4 and the second light sourc...
Embodiment 2
[0055] The following is combined with specific examples, calculation formulas, Figure 3-Figure 5 The scheme in Example 1 is further introduced, see the following description for details:
[0056] 201: Build a tongue surface topography acquisition system composed of a dual grating projector and a binocular camera;
[0057] Among them, see figure 2 , the tongue surface topography acquisition system includes: a first projector 1 , a second projector 2 , a first camera 3 , a second camera 4 , a first light source 5 , and a second light source 6 . The first light source 5 and the second light source 6 act as a double grating projector. The first camera 3 and the second camera 4 are used as binocular cameras.
[0058] The first projector 1 corresponds to the first camera 3 and the first light source 5 , and similarly, the second projector 2 corresponds to the second camera 4 and the second light source 6 .
[0059]Among them, in order to reduce lens distortion and nonlinear re...
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Abstract
The invention discloses a multi-grating projection binocular vision tongue body surface three-dimensional integral imaging method. The imaging method comprises the steps of taking a first camera and asecond camera as a binocular camera; through distortion correction of first and second projectors and image pixel matching of the two projectors, enabling the two projectors to be equivalent to a large field-of-view projector to cover large field-of-view gratings on the upper surface and both side surfaces of a tongue; enabling the first camera and the second camera to constitute two sets of grating measurement systems respectively with the first projector and the second projector to collect three-dimensional information of the two side surfaces of the tongue; and enabling the first camera and the second camera to form a binocular stereo vision system on a field-of-view overlapping region of the upper surface of the tongue, and matching phases with the same name points to accurately and stably measure upper surface morphological features of the tongue. The method of the invention ensures the measurement speed and reduces the noise interference of the measurement data by utilizing thecharacteristics of modulation of the grating phase information, thereby realizing fast and accurate acquisition of the three-dimensional morphological data.
Description
technical field [0001] The invention relates to the field of three-dimensional imaging, in particular to a multi-grating projection binocular vision tongue surface three-dimensional integral imaging method. Background technique [0002] A typical structured light profile measurement technology uses a light projector (point or line laser, grating projector, etc.) and a monocular camera, and measures the surface topography of an object based on the principle of triangulation, where the grating belongs to the coverage type structured light, It can realize rapid full-field measurement of topography, and thus is widely used in the acquisition of three-dimensional biological features. However, the three-dimensional biological characteristics of the tongue are complex, and the single projector and monocular camera can only collect the topographic features of the tongue, and the collection of information such as the thickness of the tongue coating and tooth marks on the side of the ...
Claims
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IPC IPC(8): G01B11/25
CPCG01B11/2513
Inventor 王益民孙长库郭世珍姜智浩陈慧玲
Owner TIANJIN UNIV OF TRADITIONAL CHINESE MEDICINE
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