Hiding lens distortions using black pixels

    公开(公告)号:US12106734B1

    公开(公告)日:2024-10-01

    申请号:US18513723

    申请日:2023-11-20

    CPC classification number: G09G5/10 G06F3/013 G06T5/80 G09G2320/0626

    Abstract: Disclosed is a display apparatus with gaze-tracking means, light source(s), eyepiece lens, and processor(s) configured to: process gaze-tracking data to determine a gaze direction; determine relative position of a pupil with respect to eyepiece lens and relative orientation (A) of the pupil with respect to optical axis (OO′) of eyepiece lens; estimate distortions per pixel(s) in image, based on the relative position, the relative orientation and distortion information; identify an image segment whose pixels' estimated distortions are higher than predefined threshold distortion; modify image by replacing pixels of identified image segment with black pixels or near-black pixels; and utilise modified image for display to given eye via light source(s).

    LATENT PRINT EXTRACTION APPARATUS AND METHOD

    公开(公告)号:US20240312244A1

    公开(公告)日:2024-09-19

    申请号:US18580230

    申请日:2022-07-22

    Abstract: A latent print extraction apparatus I comprising: an input operable to receive an 5 image of light reflected from a curved surface: a comparison unit 6 operable to compare a shape of the reflected light in the image to an expected shape of light reflected from a flat surface and thereby determine an estimated curvature for the curved surface: and a correction unit I I operable to correct curvature distortions of an image of a latent print on the curved surface based on the estimated curvature. The latent print extraction 10 apparatus I means calculation of a value for the curvature of the curved surface can be done remotely, without the need to physically measure the surface. This saves time, and avoids accidentally or otherwise contacting any latent prints when measuring the curvature of the surface.

    Distortion compensation in video image stabilization

    公开(公告)号:US12052498B2

    公开(公告)日:2024-07-30

    申请号:US17805119

    申请日:2022-06-02

    Applicant: Apple Inc.

    CPC classification number: H04N23/683 G06T5/80 H04N23/67 H04N23/687

    Abstract: Devices, methods, and non-transitory program storage devices are disclosed to provide techniques for distortion compensation in images that are subject to video image stabilization (VIS), e.g., electronic image stabilization (EIS). In some embodiments, the techniques comprise: obtaining a first image captured by a first image capture device; determining a first set of image parameters configured to apply a first distortion operation (e.g., an un-distortion operation) to the first image; determining a second set of image parameters configured to apply a first stabilization operation to a first version of the first image that has already had the first distortion operation applied; determining a third set of image parameters configured to apply a second distortion operation (e.g., an idealized, field of view-preserving, re-distortion operation) to the first image; and applying the determined first, second, and third sets of image parameters to the first image to generate a distortion-compensated and stabilized output image.

Patent Agency Ranking