Tissue surface tracking of tissue features is disclosed. First surface imaged features are tracked based on the first and second time spaced images at a first wavelength. Second surface imaged features are tracked based on the first and second time spaced tissue surface images at the second wavelength. Tracking metrics are obtained based on the tracking steps. The tracking steps are combined to provide a combined tracking metric. The combined tracking metric is used in a tissue surface navigation application.

A method for assessing the state of hair by releasably engaging a first end (5) of hair fibres (3) with a holder (1) so that an opposite, second end (4) of said hair fibres (3) hangs free and applying sufficient force to the first end (5) of the hair fibres (3) such that the hair fibres (3) at the second end (4) are pulled across the holder (1), wherein the force is in an upwards direction and applied by action of an encapsulated gas having a density of less than that of air (7).

According to the invention, there is provided a light-based skin treatment device comprising a treatment light source; a treatment light exit window via which, during operation, treatment light generated by the treatment light source is applied to skin of a user, wherein the treatment light exit window comprises an optically transparent material arranged to contact the skin during operation; and an imaging unit comprising an image sensor 5 arranged to generate an image of the skin during operation. The skin treatment device further comprises an optical waveguide comprising a treatment light receiving surface, an imaging light exit surface and a main surface, wherein said treatment light receiving surface is arranged to receive the treatment light so that the treatment light enters the waveguide at the treatment light receiving surface; said main surface comprises the treatment light exit 10 window and is arranged to transmit the treatment light so that the treatment light exits the waveguide at the treatment light exit window; said imaging light exit surface is arranged with respect to the main surface to receive light reflected at the main surface by total internal reflection at positions where, during operation, no skin is in contact with the main surface; said image sensor is arranged to receive from the imaging light exit surface light which is 15 guided by total internal reflection from the main surface towards the imaging light exit surface.

A system for providing images of a human scalp and associated information for assisting in hair transplant planning, the system includes a support and at least one camera selectively connectable to the support, the camera and/or the support being configured for acquiring at least one, preferably a plurality of scale calibrated overview images of the human scalp of a patient's head, preferably from different predefined angles, optical acquisition means, preferably a video-dermatoscope, being configured for acquiring a plurality of microscopic images within different regions of the scalp, a processing unit configured to process and/or analyse image data provided by the camera means and the optical acquisition means, in particular for measuring areas of the human scalp, identify and measure hair in microscopic images and/or quantitatively plan a hair transplant operation, wherein the processing unit comprises a user interface configured for interacting with a user.

Disclosed are hair analysis systems and methods comprising: (a) capturing an image of a user at as captured by a camera and sending the image to a hair analysis processor; (b) analyzing the user's hair condition at the hair analysis processor, based on the image from the camera by using a model that is trained using a plurality of images of users that each feature one or more micro features of a respective user's hair, and providing an analysis result to a display; and (c) displaying at the display the analysis result to the user. The present invention provides the system and the method with an improved sensitivity.

A plurality of light sources placed at one end of a surface imaging system may generate and direct light rays to be incident onto a surface to be detected at high incident angles that are greater than or equal to a predetermined angle threshold, the predetermined angle threshold may be set to ensure that images of the surface to be detected that have at least a predetermined degree of contrast are to be obtained. An image sensor that is placed at another end of the surface imaging system may collect light rays reflected from the surface to be detected to form a first image of the surface to be detected.

Device, systems, and methods are provided that can be used to monitor, examine, and/or analyze hair conditions and make suggestions to improve the hair conditions.

An image processing device includes: an obtaining unit configured to obtain an image including at least one body hair; and an analyzing unit configured to analyze the image to output information indicating an orientation of the at least one body hair included in the image.

A purpose of the present invention is to categorize various shapes in early FPHL and to define progression classification in order to determine the progress and the therapeutic effect. A head-image evaluation apparatus includes an acquiring unit 250 that acquires a head image 80 obtained by photographing the hair of a subject, a recognizing unit 260 that recognizes, from a reflection image 100 in which surface-reflected light in the head image 80 is formed, the shape of the surface-reflected light, and a categorizing unit 270 that determines a shift degree of the shape of the surface-reflected light from the reflection image 100 with image processing, and categorizes the degree as any one of a plurality of stages 280.

Methods and apparatuses for characterizing life quality of a living entity via hyper-spectral imaging and analysis, and applications thereof, such as managing life quality of a living entity. Includes acquiring hyper-spectral imaging data and information of: anatomical features of the living entity, and substances consumable by the living entity; generating and maintaining a living entity-specific database containing data and information about the living entity; processing acquired living entity anatomical feature and consumable substance hyper-spectral imaging data and information, and living entity data and information; using processed data and information to generate living entity life quality data and information characteristic of life quality of the living entity. Applicable to any living entity (human, animal, plant). Applicable to integrated microelectromechanical (MEM) [chip level] components in desk top devices or miniature smart/intelligent devices. Applicable to generating, processing, or/and utilizing demographic data and information about living entities and consumable substances.