A Skin Color Correction Algorithm Based on Face Key Points

Abstract

The invention discloses a skin color correction algorithm based on key points of the human face, which includes obtaining the original image; S200 performs skin color detection on the original image to obtain a skin color probability map; and obtains the eyebrow area, eye area, lip area and nose area of ​​the original image and the key points. points; perform line segment filling on the eyebrow area, correct the skin color probability map, and obtain the corrected skin color map I; perform quadrilateral filling on the eye area, correct the corrected skin color map I, and obtain the corrected skin color map II; perform quadrilateral filling on the lip area, and correct the corrected skin color map II. Ⅱ, get the corrected skin color map Ⅲ; correct the skin color value of the nose area, correct the corrected skin color map Ⅲ, and get the final corrected skin color map. The present invention can make skin color correction more precise and more effective; it can more completely obtain facial skin color information and correct skin color more accurately; thus it lays a solid foundation for the later dermabrasion process and makes the later dermabrasion process easier. The effect is more natural.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a skin color correction algorithm based on human face key points. Background technique [0002] In recent years, with the advancement of technology, mobile devices such as smartphones and tablets have become indispensable digital entertainment tools for people. With the rise of smart devices, the demand for beauty selfies is also increasing, especially the skin smoothing function is an important function favored by many women. [0003] The microdermabrasion function is generally realized by the edge-preserving noise reduction algorithm or the high-contrast preservation method. In order not to affect the facial features, hair and background, a mask map is usually required to guide the degree of noise reduction. A fast skin color detection algorithm is commonly used. accomplish. [0004] Existing methods mostly use color to distinguish skin and non-skin. No matter how ac...

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