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Method and system for precise positioning of lips
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A technology for precise positioning and lips, which is applied in the field of image processing and pattern recognition, can solve the problems of small beautification range and inaccessibility of lips, and achieve the effect of convenient image processing, precise outline and increased success rate
Active Publication Date: 2020-01-14
湖州帷幄知识产权运营有限公司
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[0002] The existing lip positioning algorithm only locates the approximate position of the lips, but does not obtain the exact outline of the lips. Therefore, in some automatic beauty cameras, the beautification of the lips may exceed the range of the actual lips, or the beautification of the lips The range is too small to achieve the desired effect
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Embodiment 1
[0057] Such as figure 1 As shown, a method for precise positioning of lips is disclosed in this embodiment, including:
[0058] S101. Image preprocessing: acquire the basic region of the lips, and after image filtering, divide the basic region of the lips into a lip region and an oral cavity region;
[0059] S102. Determine the outer contour area: after performing an erosion operation on the basic area of the lips, perform a dilation operation to obtain an outer contour area;
[0060] S103. Determine the inner contour area: obtain the inner contour area according to the lip area and the oral cavity area;
[0061] S104. Obtain contour points: obtain the contour points of the outer contour region and the inner contour region according to the contour point automatic search algorithm;
[0063] In this way, after obtaining the basic area of the lips, image filtering can...
Embodiment 2
[0099] Such as Figure 5 As shown, the present embodiment discloses a system for precise positioning of lips, including:
[0100] Image preprocessing module: used to obtain the basic area of the lips, and after image filtering, divide the basic area of the lips into a lip area and an oral cavity area;
[0101] Determining the outer contour area module: after performing the erosion operation on the basic area of the lips, perform the expansion operation to obtain the outer contour area;
[0102] Determine the inner contour area module: used to obtain the inner contour area according to the lip area and oral cavity area;
[0103] Obtaining contour point module: used to obtain the contour points of the outer contour area and the inner contour area according to the contour point automatic search algorithm;
[0104] Contour line curve fitting module: used to obtain precise lip contour through contour line curve fitting.
[0105] In this way, after obtaining the basic area ...
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Abstract
The present invention provides a method for precise positioning of lips, comprising: image preprocessing: acquiring a basic area of lips, and after image filtering, dividing the basic area of lips into a lip area and an oral area; determining an outer contour area: correcting After the erosion operation is performed on the basic area of the lips, the expansion operation is performed to obtain the outer contour area; the inner contour area is determined: the inner contour area is obtained according to the lip area and the oral cavity area; the contour point is obtained: the outer contour area is obtained according to the contour point automatic search algorithm and contour points in the inner contour area; contour linecurve fitting: Accurate lip contours are obtained by contour linecurve fitting. The present invention can precisely define the contour of the lips, and is convenient for further image processing of the lips.
Description
technical field [0001] The invention relates to the technical fields of image processing and pattern recognition, in particular to a method and system for precise positioning of lips. Background technique [0002] The existing lip positioning algorithm only locates the approximate position of the lips, but does not obtain the exact outline of the lips. Therefore, in some automatic beauty cameras, the beautification of the lips may exceed the range of the actual lips, or the beautification of the lips If the range is too small, the ideal effect cannot be achieved. [0003] Therefore, how to accurately locate the contour of the lips and accurately segment the thickness of the lips has become an urgent problem to be solved in this field. Contents of the invention [0004] The purpose of the present invention is to provide a method and system capable of precisely locating the outline of the lips and accurately segmenting the lips with thick lips. [0005] The purpose of the ...
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