Abstract: The invention discloses a tissue illumination system (700). The tissue illumination system (700) includes at least one radiation source (702) configured to generate first radiation in a first wavelength band at a first intensity, the first radiation having a peak wavelength, ?1; and second radiation in a second wavelength band at a second intensity, the second radiation having a peak wavelength, ?2. An intensity ratio of the first intensity relative to the second intensity is between 0.2 and 1; and the peak wavelength ?1 of the first wavelength band and the peak wavelength ?2 of the second wavelength band are selected such that they satisfy the following relationships: Formula (I). The tissue illumination system (700) also includes a radiation delivery unit (404) configured to deliver the first radiation and the second radiation towards tissue of a subject. An optical filter system, a device, a tissue illumination method and a computer program product are also disclosed.

Abstract: Provided is a breast shield assembly (112) for use in a breast manipulation procedure, for example milk expression and/or a breast massage procedure. The breast shield assembly comprises a cavity for receiving at least part of a breast, the cavity being at least partly defined by a surface (100) that faces the breast when the at least part of the breast is received in the cavity. The surface is arranged such that relative movement of the surface and the breast during the breast manipulation procedure causes the breast to be contactable by at least one location of the surface. An adjustment arrangement (110) enables varying of one or more of the at least one location such that different discrete regions of the breast are contactable by the surface.

Abstract: A system is provided for imaging a tissue during application of a variable pressure to the tissue which induces tissue deformation or movement. An optical imaging system comprises a light source, static optics, and at least one light detector. A distance between the optical imaging system and the tissue is variable in dependence on the tissue deformation or movement such that different portions of the tissue lie within the depth of field of the imaging system at different times during the application of the variable pressure. The captured images are processed to construct a combined image which includes said different portions of the tissue. In other words, instead of scanning an optical imaging system over an area or volume of tissue, pressure-induced movement of the tissue is used to provide an alternative to scanning of the imaging system.

Abstract: A system is provided for detecting milk duct blockage or partial blockage during application of a variable pressure to the breast. Captured optical images are processed to identify milk ducts and identify a geometry of the milk ducts over time. The milk duct geometry is compared between timings of first and second pressure levels of the variable pressure. Milk duct blockage can then be detected based on the comparison.

Abstract: According to an aspect, there is provided a personal care device (500) comprising an apparatus (100) for determining a hydration level in skin of a subject.

Abstract: According to an aspect, there is provided a method for aligning image frames in a sequence of image frames of a subject.

Abstract: Methods and systems for measuring hemoglobin concentration (cHb). A retinal tissue having blood vessels is illuminated by light including two isosbestic wavelengths (?1,?2). The isosbestic wavelengths(?1,?2) correspond to isosbestic points where oxy- and deoxyhemoglobin (HbIO2,Hb) have the same molar extinction coefficient. Measurements are collected of a plurality of backscattered reflection intensities (I(?b,?1), I(xt,?1), I(?b,?2), I(xx,X2)). Preferably, the measurements are spectrally resolved at least for the two isosbestic wavelengths (?1,?2) and position-resolved for at least a blood vessel location (xb) coinciding with a selected blood vessel and a tissue location (xt) coinciding with the retinal tissue without blood vessel. The hemoglobin concentration (cHb) can be calculated based on a combination of the measurements at the two isosbestic wavelengths (?t,?2).

Abstract: According to an aspect, there is provided a method for minimising error in ambient light corrected image due to motion, the method comprising: capturing a plurality of primary images with controlled intensity of illumination varying over time, estimating an error value due to motion for each of a plurality of sub-sets of the plurality of primary images, and performing ambient light correction on an error minimised sub-set of primary images having the lowest estimated error value to generate an ambient light corrected (ALC) image with a minimised error.

Abstract: According to an aspect, there is provided a method for minimising error in ambient light corrected (ALC) images due to motion.

Abstract: According to an aspect, there is provided a system (100) comprising a hair cutting device (102) having a cutting element for cutting a subject's hair; a localisation unit (104) for acquiring location data indicative of a location of the cutting element relative to a body part of the subject; a timer unit (106) for measuring time data associated with usage of the hair cutting device; and a processing unit (108) in communication with the hair cutting device, the localisation unit and the timer unit, the processing unit being configured to determine, based on the location data and the time data, an operating parameter to be applied to the hair cutting device.

Abstract: Provided is a computer implemented method (100) suitable for monitoring at least one skin region of a subject capable of moving relative to a source of ambient light. A sequence of video frames is received (102) of the subject. The sequence of video frames was captured while a light emitter provided a varying illumination, e.g. a pulsed illumination, to the subject. The sequence of video frames is then used to generate (106, 110) a first and second ambient light corrected image which are each then segmented (108, 112) to identify at least one skin region. Further provided is a computer program product for implementing the method, and a system for monitoring the at least one skin region.

Abstract: A computer-implemented method (100) is described. The method comprises receiving (102) first and second imaging data obtained by an imaging system (204) of a subject (202) illuminated by first illumination (206a) in a first spectral band and second illumination (206b) in a second spectral band comprising different spectral content to the first spectral band. The second illumination incident on the subject is polarized. The received first imaging data is obtained within the first spectral band. The received second imaging data is obtained within the second spectral band. The first and second illumination are admitted, via an imaging system polarizer (310) of the imaging system, into the imaging system depending on a polarization state of reflected first and second illumination received by the imaging system after reflection from a surface of the subject. Information regarding specular reflection from the surface of the subject is determined by comparing the first and second imaging data.

Abstract: According to an aspect, there is provided a method for aligning image frames in a sequence of image frames of a subject.

Abstract: According to an aspect, there is provided a computer-implemented method (200) for generating a treatment instruction, the method (200) comprising: receiving (202) first image data relating to the skin of a subject; obtaining (204), based on the first image data, an indication of a location of one or more features of the subject; generating (206), based on the first image data, an initial map of the skin of the subject including the location of the identified features; receiving (208) second image data relating to the skin of the subject during a current treatment session; determining (210), based on the second image data, a treatment parameter relating to a treatment performed in respect of the skin of the subject; generating (212), based on the initial map and the treatment parameter, an updated map of the skin of the subject; and generating (214), based on the updated map, a treatment instruction for delivery to a recipient device.

Abstract: According to an aspect, there is provided a system (100) comprising a hair cutting device (102) having a cutting element for cutting a subject's hair; a localisation unit (104) for acquiring location data indicative of a location of the cutting element relative to a body part of the subject; a timer unit (106) for measuring time data associated with usage of the hair cutting device; and a processing unit (108) in communication with the hair cutting device, the localisation unit and the timer unit, the processing unit being configured to determine, based on the location data and the time data, an operating parameter to be applied to the hair cutting device.

Abstract: In an embodiment, a method (100) is described. The method is a computer-implemented method. The method comprises receiving (102) pixel information corresponding to at least part of a first, second and third image, acquired by an imaging system, of a subject illuminated by temporally modulated illumination. A time delay between an acquisition start time of the first, second and third images is such that there is an overlap in time during acquisition of the first, second and third images. The method further comprises determining (104) modified pixel information for constructing a modified image of the subject. The modified pixel information is determined based on: a difference between the received pixel information of the first, second and third images to reduce an effect of ambient lighting in the received pixel information; and a combination of the received pixel information to cancel out a spatial intensity modulation pattern apparent in each of the first, second and third images.

Abstract: The invention discloses a tissue illumination system (700). The tissue illumination system (700) includes at least one radiation source (702) configured to generate first radiation in a first wavelength band at a first intensity, the first radiation having a peak wavelength, ?1; and second radiation in a second wavelength band at a second intensity, the second radiation having a peak wavelength, ?2. An intensity ratio of the first intensity relative to the second intensity is between 0.2 and 1; and the peak wavelength ?1 of the first wavelength band and the peak wavelength ?2 of the second wavelength band are selected such that they satisfy the following relationships: Formula (I). The tissue illumination system (700) also includes a radiation delivery unit (404) configured to deliver the first radiation and the second radiation towards tissue of a subject. An optical filter system, a device, a tissue illumination method and a computer program product are also disclosed.

Abstract: According to an aspect, there is provided a method for minimising error in ambient light corrected (ALC) images due to motion.

Abstract: According to an aspect, there is provided a method for minimising error in ambient light corrected image due to motion, the method comprising: capturing a plurality of primary images with controlled intensity of illumination varying over time, estimating an error value due to motion for each of a plurality of sub-sets of the plurality of primary images, and performing ambient light correction on an error minimised sub-set of primary images having the lowest estimated error value to generate an ambient light corrected (ALC) image with a minimised error.

Abstract: According to an aspect, there is provided a method for analysing an object, the method comprising illuminating the object with illumination provided by at least two illumination sources, each illumination source being defined by at least one distinct characteristic property; temporally modulating the illumination provided by each illumination source according to a modulation function; capturing a plurality of image frames representing the object using a rolling shutter image sensor; and demultiplexing the plurality of image frames into component images each representing the object under illumination from a respective illumination source, and an ambient image representing the object under an ambient light condition.