Abstract: The subject of the present invention is a method for characterizing the distribution of the volumes of the surface of the skin of an individual, more particularly applicable in the evaluation of the effect of firming cosmetic products. This method uses the isolines and the gradients of the slopes computed from a three-dimensional representation of the surface of the skin.

Abstract: A method of characterizing a person's skin imperfections uses a digital color image-taking device to take at least one digital image of an area of skin including at least one imperfection to be characterized. An apparatus for characterizing the imperfections of the skin and a method for measuring the effectiveness of a treatment for skin imperfections use an active cosmetic, dermatological or pharmaceutical agent and further measure the effectiveness of a staining method aiming to attenuate or mask skin imperfections.

Abstract: The subject of the present invention is a method for characterizing the distribution of the volumes of the surface of the skin of an individual, more particularly applicable in the evaluation of the effect of firming cosmetic products. This method uses the isolines and the gradients of the slopes computed from a three-dimensional representation of the surface of the skin.

Abstract: The invention relates to a method and apparatus for characterizing the tone of the skin or integuments. The apparatus comprises a digital camera or a digital photographic apparatus (12) allowing the capture of at least one digital image (14) of at least one determined skin zone (34, 36, 38, 40), said image being defined by a multiplicity of pixels (N) that is transmitted to a digital image processing device comprising means for splitting the digital image into three color planes: red, green, blue, termed R, G, B; c) means for extracting each of these planes R, G, B; and on each plane, calculation means for logging the grey level value for each of the pixels, i.e.

Abstract: A method involving filters of an extracted plane from a digital image of an area of skin to obtain a first ripple image and a second roughness image, from which appropriate computation devices are used to calculate different types of gray levels to characterize a pigment spot, notably with regard to the uniformity or disparity of the spot. A method measures the effectiveness of a cutaneous pigment spot treatment by an active pigmenting or depigmenting agent.

Abstract: A method and apparatus for characterizing the tone of the skin or integuments uses an apparatus capturing a digital image of a skin zone. The image is defined by a multiplicity of pixels (N) and transmitted to a digital image processing device for splitting the digital image into R, G and B colour planes. The apparatus includes means for extracting each of these planes R, G, B; and on each plane, calculation means for logging the grey level value for each of the pixels, i.e. N values, which are optionally processed to obtain a value characteristic of the grey levels for each plane, corresponding to a value characteristic of the colour; as well as the luminosity value L*. The apparatus also characterizes the tone of the skin or integuments on the basis of the combination of the value characteristic of the colour and of the Luminosity value L*.

Abstract: The invention relates to a method and apparatus for characterizing the imperfections of the skin. The apparatus comprises: a) a digital camera allowing the taking of at least one digital image of at least one determined skin zone, the said image being defined by a multiplicity of pixels, that is transmitted to a digital image processing device; b) means of splitting the digital image into three color planes: red, green, blue, termed R, G, B, with the aid of the said image processing device; c) means of extracting a single of these planes; d) means of calculating at least one of the following parameters on the basis of this plane: the mean grey level of the image; the surface area of the imperfections of the skin of the said image, some of which are related to aging, such as wrinkles, lines, spots, dark circles, pigmentary imperfections, slackening or loosening zones; the variance of the grey levels over the set of pixels of the image as parameter representative of the homogeneity of the skin.

Abstract: A method involving filters of an extracted plane from a digital image of an area of skin to obtain a first ripple image and a second roughness image, from which appropriate computation devices are used to calculate different types of gray levels to characterize a pigment spot, notably with regard to the uniformity or disparity of the spot. A method measures the effectiveness of a cutaneous pigment spot treatment by an active pigmenting or depigmenting agent.

Abstract: A method of characterizing a person's skin imperfections uses a digital color image-taking device to take at least one digital image of an area of skin including at least one imperfection to be characterized. An apparatus for characterizing the imperfections of the skin and a method for measuring the effectiveness of a treatment for skin imperfections use an active cosmetic, dermatological or pharmaceutical agent and further measure the effectiveness of a staining method aiming to attenuate or mask skin imperfections.

Abstract: The invention relates to a method and apparatus for characterizing the imperfections of the skin. The apparatus comprises: a) a digital camera allowing the taking of at least one digital image of at least one determined skin zone, the said image being defined by a multiplicity of pixels, that is transmitted to a digital image processing device; b) means of splitting the digital image into three colour planes: red, green, blue, termed R, G, B, with the aid of the said image processing device; c) means of extracting a single of these planes; d) means of calculating at least one of the following parameters on the basis of this plane: the mean grey level of the image; the surface area of the imperfections of the skin of the said image, some of which are related to aging, such as wrinkles, lines, spots, dark circles, pigmentary imperfections, slackening or loosening zones; the variance of the grey levels over the set of pixels of the image as parameter representative of the homogeneity of the skin.