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    Processing of 3D image information based on texture maps and meshes
    41.
    发明授权
    Processing of 3D image information based on texture maps and meshes 有权

    公开(公告)号：US11189079B2

    公开(公告)日：2021-11-30

    申请号：US16622996

    申请日：2018-06-19

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christiaan Varekamp ,  Bart Kroon ,  Patrick Luc Els Vandewalle

    IPC: G06T15/00 ,  G06T15/20 ,  G06T15/04 ,  G06T17/20

    Abstract: An apparatus comprises a receiver (201) for receiving an image signal comprising a number of three dimensional images representing a scene from different viewpoints, each three dimensional image comprising a mesh and a texture map, the signal further comprising a plurality of residual data texture maps for a first viewpoint being different from the different viewpoints of the number of three dimensional images, a first residual data texture map of the plurality of residual texture maps providing residual data for a texture map for the first viewpoint relative to a texture map resulting from a viewpoint shift of a first reference texture map being a texture map of a first three dimensional image of the number of three dimensional images and a second residual data texture map of the plurality of residual texture maps providing residual data for a texture map for the first viewpoint relative to a texture map resulting from a viewpoint shift of a second reference texture map being a texture map of a second three dimensional image of the number of three dimensional images. A mesh processor (203) generates a first mesh for the first viewpoint and a second mesh for the first viewpoint from an additional reference mesh being a mesh of the second three dimensional image of the plurality of three dimensional images. A first texture processor (205) generates a first intermediate texture map in response to a viewpoint transformation of the first reference texture map from a viewpoint of the first three dimensional image to the first viewpoint and an second intermediate texture map in response to a viewpoint transformation of the second reference texture map from a viewpoint of the second three dimensional image to the first viewpoint. A second texture processor (207) generates a first texture map in response to a combination of the first intermediate texture map and the first residual data texture map, and a second texture map in response to a combination of the second intermediate texture map and the second additional residual data texture map. An image generator (209) generates an image for a second viewpoint from the first texture map, the first mesh, the second texture map, and the second mesh.

    Apparatus and method for generating an image data bitstream
    42.
    发明授权
    Apparatus and method for generating an image data bitstream 有权

    公开(公告)号：US11122295B2

    公开(公告)日：2021-09-14

    申请号：US16959208

    申请日：2019-01-04

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Bart Kroon ,  Christiaan Varekamp ,  Patrick Luc Els Vandewalle

    IPC: H04N19/597 ,  H04N19/166 ,  H04N13/161 ,  H04N13/00

    Abstract: An apparatus comprises a store (201) storing a set of image parts and associated depth data for images representing a scene from different view poses (position and orientation). A predictability processor (203) generates predictability measures for image parts of the set of images for view poses of the scene. A predictability measure for a first image part for a first view pose is indicative of an estimate of the prediction quality for a prediction of at least part of an image for a viewport of the first view pose from a subset of image parts of the set of image parts not including the first image part. A selector (205) selects a subset of image parts of the set of image parts in response to the predictability measures, and a bitstream generator (207) for generating the image bitstream comprising image data and depth data from the subset of image parts.

    Autostereoscopic display device
    45.
    发明授权
    Autostereoscopic display device 有权

    公开(公告)号：US10257503B2

    公开(公告)日：2019-04-09

    申请号：US15105637

    申请日：2014-12-05

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Olexandr Valentynovych Vdovin ,  Bart Kroon ,  Mark Thomas Johnson

    IPC: G02B27/22 ,  H04N13/00 ,  H04N13/15 ,  H04N13/305

    Abstract: An autostereoscopic display device has a particular design of display panel for use with a forming arrangement having non-slanted view forming elements (being for example a lenticular or parallax barrier array). The display panel sub-pixels incorporate a slant into their shape. The display panel is designed to enable low slant angles while still enabling efficient mapping of the 2D display panel pixels to the 3D pixels, allow for square 3D sub-pixels on rectangular grid which gives better distribution of color components with improved uniformity and improved rendering in 3D mode.

    CODING SCHEME FOR DEPTH DATA
    49.
    发明申请
    CODING SCHEME FOR DEPTH DATA 有权

    公开(公告)号：US20250159124A1

    公开(公告)日：2025-05-15

    申请号：US19021315

    申请日：2025-01-15

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Bart Kroon

    IPC: H04N13/161 ,  H04N13/00 ,  H04N13/128 ,  H04N13/178 ,  H04N19/136 ,  H04N19/42 ,  H04N19/86

    Abstract: Methods of encoding and decoding depth data are disclosed. In an encoding method, depth values and occupancy data are both encoded into a depth map. The method adapts how the depth values and occupancy data are converted to map values in the depth map. For example, it may adaptively select a threshold, above or below which all values represent unoccupied pixels. By adapting how the depth and occupancy are encoded, based on analysis of the depth values, the method can enable more effective encoding and transmission of the depth data and occupancy data. The encoding method outputs metadata defining the adaptive encoding. This metadata can be used by a corresponding decoding method, to decode the map values. Also provided are an encoder and a decoder for depth data, and a corresponding bitstream, comprising a depth map and its associated metadata.

    Image signal representing a scene
    50.
    发明授权
    Image signal representing a scene 有权

    公开(公告)号：US12261992B2

    公开(公告)日：2025-03-25

    申请号：US17437938

    申请日：2020-02-14

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Bartholomeus Wilhelmus Damianus Van Geest ,  Bart Kroon

    IPC: H04N13/282 ,  G06T5/50 ,  G06T15/20 ,  H04N13/243 ,  H04N13/275

    Abstract: Generating an image signal comprises a receiver that receives source images representing a scene. A combined image generator generates combined images from the source images. Each combined image is derived from source images. An evaluator determines prediction quality measures for elements of the source images where the prediction quality measure for an element of a source image is indicative of a difference between pixel values in the source image and predicted pixel values for pixels in the element. The predicted pixel values are pixel values resulting from prediction of pixels from the combined images. A determiner determines low-quality segments of the source images comprising elements for which the prediction quality measure is indicative of a difference between the pixels that is above a threshold. An image signal generator generates an image signal comprising image data representing the combined images and the low-quality segments of the source images.

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