Method for identifying a lip-makeup product appearing in an image

A method for identifying a lip-makeup product from an input image, the method being implemented by a system comprising a computer and a memory storing, for each of a plurality of reference lip-makeup products, an identifier and color parameters, and comprising:

• detecting a mouth of a person on the input image,
• determining whether the mouth is made-up or not, and
• if the mouth of the person is made-up,
• determining color parameters of the lip-makeup of the input image from at least some of the pixels of the image belonging to the mouth,
• computing a distance between the color parameters of the lip-makeup from the image and the color parameters of at least some of the plurality of reference lip-makeup products, and
• if at least one distance between the color parameters of the lip-makeup of the input image and one of the reference lip-makeup product is below a predetermined threshold, identifying a reference lip-makeup product best matching the lip-makeup product on the image,
• further comprising determining a texture of the lip-makeup product of the image, and the step of computing a distance between the color parameters of the lip-makeup product of the image and the color parameters of the referenced lip-makeup products is performed only for the reference lip-makeup products having the same texture as the lip-makeup product of the image.

A method for identifying a lip-makeup product from an input image, the method being implemented by a system comprising a computer and a memory storing, for each of a plurality of reference lip-makeup products, an identifier and color parameters, and comprising:

• detecting a mouth of a person on the input image,
• determining whether the mouth is made-up or not, and
• if the mouth of the person is made-up,
• determining color parameters of the lip-makeup of the input image from at least some of the pixels of the image belonging to the mouth,
• a distance between the color parameters of the lip-makeup from the image and the color parameters of at least some of the plurality of reference lip-makeup products, and
• if at least one distance between the color parameters of the lip-makeup of the input image and one of the reference lip-makeup product is below a predetermined threshold, identifying a reference lip-makeup product best matching the lip-makeup product on the image,
• implemented by a system further comprising an advertisements database comprising a plurality of advertisement images associated with respective reference lip-makeup products, wherein the method comprises a preliminary step of determining whether the input image corresponds to an advertisement image contained in the advertisement database and, if so, identifying the lip-makeup product on the input image as the reference lip-makeup product associated to said advertisement image,
• wherein determining whether the input image corresponds to an advertisement database is performed by implementing a machine learning algorithm trained on a learning database comprising the advertisement images of the advertisement database and, for each advertisement image, a set of additional images artificially generated from the advertisement image by implementing at least one transformation of said advertisement image.