US 2026/0217258 A1 · DRIVER MONITORING SYSTEM AND METHOD

Abstract

A system for monitoring biomedical parameters and a corresponding method are described. The system comprises a light source arrangement providing a coherent illumination pattern generating illumination spots on body surface of the individual, a camera unit collecting images the coherent illumination spots, and a control unit comprising at least one processor. The control unit receives input data comprising color images and processes the input data to determine one or more biomedical parameters of the individual. The processing comprises: determining temporal overlap between acquisition time and a selected pulse sequence of illumination and selecting a sequence of images having overlap above a selected threshold. Processing said sequence of images and identifying pixels associated with the coherent illumination spots. Generating a contrast varying functions indicative of variation in contrast of the speckles and determining one or more biomedical parameters of the individual based on the contrast varying functions.

Claims30

Dependent claims

A system for monitoring biomedical parameters of an individual, the system comprising:

(a) a light source arrangement providing at least a coherent illumination pattern for generating one or more coherent illumination spots on body surface of said individual;
(b) a camera unit operable for collecting one or more color images, positioned to collect image data from a scene, said one or more color images comprise at least a first sub-sequence of images comprising said one or more coherent illumination spots;
(c) a control unit comprising at least one processor adapted for operating said light source arrangement and said camera unit, and for receiving input data comprising one or more color images from the camera unit, and for processing said input data to determine one or more biomedical parameters of said individual;
wherein said processing comprises:
determining temporal overlap between acquisition time of color images in said input data and a selected pulse sequence of illumination emitted by said light source arrangement and selecting a sequence of images having overlap above a selected threshold, processing said sequence of images and identifying pixels associated with said one or more coherent illumination spots on body surface of said individual, generating a contrast varying functions indicative of variation in contrast of speckles in the coherent illumination spots in said sequence of images, and determining one or more biomedical parameters of an individual based on the one or more contrast varying functions.

2 more elements

A method comprising:

(a) providing image data sequence of a region of interest comprising at least a portion of body of an individual, and providing data indicative of sequence of coherent illumination pulses emitted by a light source arrangement;
(b) processing said image data sequence and determining a sub-sequence of images having temporal overlap with said sequence of coherent illumination pulses;
(c) processing said sub-sequence of images and determining one or more illumination spots associated with coherent illumination within said sub-sequence of images;
(d) utilizing said one or more illumination spots and determining a measure of contrast variations between images of said sub-sequence, determining a contrast varying function indicative of contrast variation of said one or more illumination spots within said sub-sequence of images, and determining one or more biomedical parameters of an individual based on said contrast varying function.

1 more element

Dependencies are inferred from the claim text.

Driver monitoring system and method

Life of this patent

Driver monitoring system and method

Life of this patent

Abstract

Claims30