L'oreal

Centre National De La Recherche Scientifique

Bernard Querleux

Jean-Luc M Leveque

Basile Audoly

Frederic Leroy

Mathias Fink

Franck Giron

Marie-Paule Cani

Luc Darrasse

Hervé Saint-Jalmes

Jacques Taquin

Michel Sauzade

Mohamed M Yassine

Herve Saint Jalmes

Herve Saint-Jalmes

Jean-Luc Genisson

Thérèse Baldeweck

Florence Bertails

Roland Bazin

The invention relates to a method of generating at least one synthesized image of at least a portion of a head of hair in movement, the method comprising the steps consisting in calculating a shape of at least one director hair by applying to the at least one director hair at least one mechanical model of an inextensible rod having inertia and stiffnesses in twisting and in bending, and in generating at least one virtual image of the at least one portion of the head of hair from the shape of the director hair.

Method and a system for generating a synthesized image of at least a portion of a head of hair

The invention relates to a method of generating a synthesized image of a hair, comprising the following steps: The behavioral relationship may be given by the minimization of the following function: where &#x3b1;=Lkand &#x3b2;=K/g&#x3bc;L, and where L designates the length of the hair, kits spontaneous curvature, K its bending moment, &#x3bc; its linear density andthe acceleration due to gravity, {tilde over (s)} the curvilinear abscissa relative to the length of the hair, {tilde over (k)} its local curvature relative to its length and {tilde over (z)} its height relative to its length.

Method and a system for generating a synthesized image of a hair

The present invention relates to an analysis apparatus for analyzing the skin, the which includes an ultrasound probe arranged to analyze the skin along an axis and a vibrator arranged to emit at least one shear wave to a region of the skin extending about the axis. The ultrasound probe is arranged to detect displacements induced in the skin by the propagation of the shear wave.

Skin analysis apparatus including an ultrasound probe

An apparatus enabling a person to evaluate the hydration of a region of the skin or the mucous membranes. The apparatus includes a sensor including an array of non-optical detection cells and processor apparatus arranged to deliver at least one piece of information relating to the hydration of the region on the basis of signals coming from the sensor. A method for evaluation of hydration is also provided. The apparatus and method can also be used for evaluating, e.g., aging or the effectiveness of a treatment regimen.

Apparatus and method to evaluate hydration of the skin or the mucous membranes

Methods and apparatus for determining the optical characteristics of cosmetic substances are disclosed. The method includes illuminating the surface of the substance with an incident light beam so as to form a back-scatter spot, obtaining an image of the back-scatter spot, and analyzing the variations in brightness of the image at a number of points so as to determine the optical characteristic in question.

Method of determining the capacity of a cosmetic to diffuse and/or absorb light

A device for examining by nuclear magnetic resonance a volume having small depth, including means for creating a static homogeneous magnetic field B.sub.0 in which a volume to be examine is positioned, a system for creating magnetic field gradients in three directions of space, and a radio frequency transmission/reception system. The means for creating the static magnetic field B.sub.0, the field gradient system, and the radio frequency transmission/reception system are situated on a same side of an open surface, while the volume to be examined is situated on the other side of the surface. The device can be applied to magnetic resonance imaging.

Device for examining a volume of small depth by nuclear magnetic

The apparatus (1) is constituted by: device (3) for creating a homogeneous main magnetic static field (HO) orientated along a determined direction (Oz) in which static field there is placed the body (2) to be examined; devices for creating magnetic field gradients in a space of the body to be examined along three directions of the space; radio frequency excitation device (E) and a device (R) for the detection of the nuclear magnetic resonance signals produced by the body to be examined. The one, (Dx) of the devices for creating the gradients is constituted by a unilateral system wherein the device (6) for creating the magnetic field gradient along one direction (Ox) of the space are entirely situated on one and the same side of an 'open' surface (P) while the body to be examined (2) is situated on the side of the surface (P) which is opposite to that where the device (6) is located, which are capable of creating a transverse gradient in relation to the direction (Oz) of the main static field, on the side of the surface where the body ( 2) to be examined is situated. Such a device (Dx) is particularly suitable for NMR imaging of the human skin.

Growing community of inventors

Le Perreux, France

Bernard Querleux