Imaging device and associated monitoring system
By controlling optical distortion and focusing more pixels on specific regions of interest within the passenger compartment, the imaging device addresses the resolution degradation issue in wide-angle lenses, enhancing image quality and algorithm performance for occupant monitoring.
FR3164591B1Active Publication Date: 2026-06-19VALEO COMFORT & DRIVING ASSISTANCE
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- VALEO COMFORT & DRIVING ASSISTANCE
- Filing Date
- 2024-07-15
- Publication Date
- 2026-06-19
Smart Images
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Abstract
The invention relates to an imaging device (120), comprising at least one matrix image sensor (130) and an optical system (140) having an optical axis (142) contained in a plane and adapted to receive light rays from a spatial region of a scene to be imaged and having a defined field angle between the optical axis and an axis connecting the spatial region and a point of the matrix image sensor.According to the invention, the effective focal length of the optical system varies in the plane such that the imaging device exhibits an angular distribution curve of the pixels of the matrix image sensor as a function of the field angle, which includes at least one local maximum (1430) contained within an angular region of interest (150, 151), this region comprising light rays with field angles ranging from 30 degrees to 40 degrees. The at least one local maximum is such that the angular region of interest is imaged on a proportion between 8% and 11% of the pixels of the matrix image sensor arranged in the plane. Figure for the abstract: Fig. 1.
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