Dental digital colorimetric method based on digital photos and hsb color system

A photo and digital technology, applied in the field of digital colorimetry in dentistry, can solve the problem that the probe cannot be placed evenly, and achieve the effect of objective and accurate data

Active Publication Date: 2017-07-21
范翌
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Problems solved by technology

First, the detection head of the colorimeter is composed of a light source and a sensor arrangement, with a diameter of 3-5mm. To place the detection head of this size evenly on the tooth surface for measurement limits its measurement area to the tooth Second, when it is necessary to measure teeth with a large surface curvature such as canines, the probe head cannot even be placed on the tooth surface evenly

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  • Dental digital colorimetric method based on digital photos and hsb color system

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with drawings and embodiments.

[0029] Such as figure 1 As shown, the oral digital colorimetric method based on digital photos and HSB color system specifically includes the following steps:

[0030] Step (1). Upload a standardized oral digital photo, which contains a target natural tooth and 3 color comparison chips;

[0031] Step (2). Separately pick the color of the 3 color charts in the uploaded photos, and obtain the color information of each color chart: lightness B, saturation S and chroma H; place the color information in the array B respectively , S and H; lightness B1=77, saturation S1=24 and chroma H1=35 of color comparison chip 1, lightness B2=74, saturation S2=27 and chroma H2=33 of color comparison chip 2, Brightness B3=72, saturation S3=33 and chromaticity H3=31 of color comparison sheet 3;

[0032] Step (3). Pick the color of the evenly colored part of the natural tooth in the uploa...

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Abstract

The invention discloses a digital colorimetric method for oral cavity based on digital photos and HSB color system. The present invention firstly uploads a standardized oral digital photo containing a target natural tooth and N color comparison sheets, and then independently picks the color of the N color comparison sheets in the uploaded photo, and at the same time picks the color of the natural teeth evenly; screens out The color comparison sheet closest to the natural tooth, and the calculated comparison difference ΔB, ΔS, ΔH; the technician adjusts the ratio of the material and the special color effect according to the comparison difference ΔB, ΔS, ΔH, and then makes it; After the prosthesis is made, a standardized oral digital photo will be taken, and then through the processing and comparison of the standardized dental digital photo, the obtained prosthesis will be compared with the color information of the color chart to determine whether the prosthesis meets the requirements. The present invention is capable of measuring the color of any region of the tooth without being limited to the size and shape of the tooth surface.

Description

technical field [0001] The invention belongs to the technical field of digital colorimetry in the department of stomatology, and relates to a digital colorimetric method for oral cavity based on digital photos and an HSB color system. Background technique [0002] When the stomatology department makes dentures for patients, the doctor needs to accurately convey the color information of the patient's natural teeth to the technician who makes the dentures. The accuracy of color information recognition and communication directly affects the final color restoration of dentures. Therefore, the objective and efficient transmission of color information between doctors and technicians is crucial to the quality of dental treatment. [0003] The existing oral colorimetry methods are mainly divided into naked eye colorimetry and instrument colorimetry. The naked eye has a long history of color comparison and has a low threshold, but its defects are also obvious. First, when observin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C19/04A61C13/00
Inventor 范翌
Owner 范翌
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