A device for measuring hair properties has a first part (I) and a second part (II) between which hair (H) is guided. The first part includes a measuring probe (MP), and the second part is arranged for deforming the hair against the measuring probe. While the device moves along the hair, the measuring probe experiences both a friction force resulting from the hair being guided along the measuring probe, and a deformation force resulting from hair deformation by the second part against the measuring probe. The second part includes a pressure element (PB, S) for pressing the hair against the measuring probe. In alternative embodiments, the second part comprises alignment elements (AE) at opposite sides of the measuring probe, and guidance elements (G) for mitigating an influence of an angle at which the device is applied to the hair to the friction force and/or the deformation force.

A system for the characterization of vital or reconstituted tissues, in particular skin appendages, includes a plurality of sources of electromagnetic radiation to be spatially oriented and to irradiate according to a selected angle of incidence a sample of vital or reconstituted tissue having a series of filaments of a person that are homogenous in structural type, at least one image acquisition device for receiving a reflected and/or dispersed radiation from the sample, or a fluorescence radiation emitted by the sample, and an image processing unit configured to process reflection, and/or dispersion and/or fluorescence images, and to classify examined tissue to compare the value of at least one parameter selected from gloss, dimensions, colour intensity, contour of the filaments of the sample with a database of parameters of classes of predetermined vital or reconstituted tissues, and/or to compare the value of the at least one parameter with a database of historic values of parameters of the tissue.

Some embodiments are directed to a dermoscope and a method for forming an image of a part of a skin having one or more at least partly transparent structures, such as at least partly transparent hair. The dermoscope has a light source, a light shaping unit, and an image forming lens. The light source is arranged to provide light to the light shaping unit. The light shaping unit is arranged to direct at least part of the light via an immersion fluid to the part of the skin having the one or more at least partly transparent structures to be imaged at incident angles in the immersion fluid larger than 70 degrees relative to the optical axis of the dermoscope. The image forming lens is arranged to receive at least light refracted from the one or more at least partly transparent structures.

Provided herein is a system for measuring and analyzing skin and hair, which includes a skin and hair measurement and analysis device, a smart terminal of a user in which an application interlinked with the skin and hair measurement and analysis device is installed, and a server interlinked with the skin and hair measurement and analysis device and interlinked with the smart terminal.

A signal processing system includes an expiratory information acquisition unit and a nerve recognition uni. The expiratory information acquisition unit acquires expiratory information as a piece of biometric information about a person's expiratory volume. The nerve recognition unit recognizes, based on a dispersion in the expiratory information, a condition of the person's autonomic nervous system.

A light outputting device for scalp care according to an embodiment of the present invention comprises: a dome-shaped outer case forming the outer shape; an inner case formed inside the outer case; a plurality of laser light sources disposed in the space between the outer case and the inner case; photodiodes included in the plurality of laser light sources, respectively; and a processor which acquires a light amount sensing value of a first photodiode among the plurality of photodiodes, sets an amount of light for a first laser light source including the first photodiode on the basis of the acquired light amount sensing value, and drives the first laser light source on the basis of the set amount of the light.

There are provided an image acquiring unit (122) for acquiring a plurality of images of a skin of an examination subject which is picked up over a plurality of points of time by an image pickup device (104), a body hair specifying unit (123) for specifying body hair for a growth period of the examination subject from the image with regard to each of the images acquired by the image acquiring unit (122), and a circadian rhythm estimating unit 124 for estimating a circadian rhythm of the examination subject based on a temporal change in a length of the body hair for the growth period which is obtained by specifying the body hair for the growth period from each of the images by the body hair specifying unit 123. Consequently, it is possible to estimate the circadian rhythm of the examination subject from these images by simply acquiring the image of the skin of the examination subject without requiring gene measurement, cell culture, frequent blood collection, analysis in special research facilities or the like.

The present invention is directed to a method of detecting stray fibers emanating from a substrate comprising: a) Taking an image or a series of consecutive images of stray fibers in front of a contrasted background, that is created using one or more light sources, using a digital device; b) Segmenting of stray fibers and background from objects not directly contrasted against the background resulting in a binary image mask; c) Applying an edge detection technique to the image or modification of original image to enhance contrast of stray fibers against the background; and Applying the binary image mask from step b) to an image created in step c) to create an image in which only the stray fibers and/or outline of any other object contrasted against the background are present.

A system and a method for generating stress level information for an individual and stress level resilience information for an individual, which includes a stress information processing module configured to process stress information for the individual, the stress information for the individual comprising at least two of psychometric information for the individual, physiological information for the individual, behavioural information for the individual, and cognitive function information for the individual.

Hair analysing device, hair examination system and method for providing hair condition information. In various embodiments, a hair analysing device is provided. The hair analysing device can have a device body provided with an adhesive layer on at least one side of its surface and configured to be releasably fastened in or on a user's hair by employing the adhesive layer, at least one sensor arranged in or on the device body for detecting at least a sensor value, and an electronic circuit device arranged in or on the device body, wherein the electronic circuit device is coupled to the at least one sensor for receiving the at least one sensor value, and wherein the electronic circuit device is configured to provide the received at least one sensor value to the user.