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    PROCESSING A DISPARITY OF A THREE DIMENSIONAL IMAGE
    1.
    发明申请
    PROCESSING A DISPARITY OF A THREE DIMENSIONAL IMAGE 审中-公开

    公开(公告)号：US20170223331A1

    公开(公告)日：2017-08-03

    申请号：US15515160

    申请日：2015-09-24

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christiaan VAREKAMP ,  Patrick Luc Els VANDEWALLE

    IPC: H04N13/00

    CPC classification number: H04N13/122 ,  H04N13/128 ,  H04N2013/0081 ,  H04N2013/0092 ,  H04N2213/003

    Abstract: An apparatus for reducing the visibility of disparity estimation errors at edges, and in particular at overlays. The apparatus comprises a receiver (401) for receiving a three dimensional image represented by at least image values (brightness/contrast values) and a disparity value. A subset selector (403) evaluates an image property criterion for the image value for a group of pixels and determines a subset of pixels of the group of pixels for which the image property criterion is met. The criterion may for example reflect whether the pixel belongs to an image object edge. A distribution evaluator (405) generates a frequency distribution for disparity values of the subset of pixels and an analyzer (407) determines a shape property for the frequency distribution (the presence of a peak). An adaptor (409) determining a disparity remapping in response to the shape property and a remapper (411) modifies disparity values of the three dimensional image by applying the disparity remapping. The approach may e.g. reduce image depth when overlay graphics is likely to be present.

    APPARATUS AND METHOD FOR GENERATING IMAGES OF A SCENE
    2.
    发明申请
    APPARATUS AND METHOD FOR GENERATING IMAGES OF A SCENE 有权

    公开(公告)号：US20210264658A1

    公开(公告)日：2021-08-26

    申请号：US17254903

    申请日：2019-06-20

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christiaan Varekamp ,  Patrick Luc Els VANDEWALLE

    IPC: G06T15/20 ,  G06T7/73 ,  H04N13/117

    Abstract: An apparatus comprises a store (209) storing a set of anchor poses for a scene, as well as typically 3D image data for the scene. A receiver (201) receives viewer poses for a viewer and a render pose processor (203) determines a render pose in the scene for a current viewer pose of the viewer pose where the render pose is determined relative to a reference anchor pose. A retriever (207) retrieves 3D image data for the reference anchor pose and a synthesizer (205) synthesizes images for the render pose in response to the 3D image data. A selector selects the reference anchor pose from the set of anchor poses and is arranged to switch the reference anchor pose from a first anchor pose of the set of anchor poses to a second anchor pose of the set of anchor poses in response to the viewer poses.

    ENCODING AND DECODING HDR VIDEOS
    3.
    发明申请
    ENCODING AND DECODING HDR VIDEOS 有权

    公开(公告)号：US20210019868A1

    公开(公告)日：2021-01-21

    申请号：US17061937

    申请日：2020-10-02

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Johannes Yzebrand TICHELAAR ,  Johannes Gerardus Rijk VAN MOURIK ,  Jeroen Hubert Christoffel Jacobus STESSEN ,  Roeland Focco Everhard GORIS ,  Mark Jozef Willem MERTENS ,  Patrick Luc Els VANDEWALLE ,  Rutger NIJLAND

    IPC: G06T5/00 ,  H04N19/186 ,  H04N19/60

    Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y′HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y′_in) of the standard dynamic range image.

    ENCODING AND DECODING HDR VIDEOS
    5.
    发明申请
    ENCODING AND DECODING HDR VIDEOS 审中-公开

    公开(公告)号：US20190130542A1

    公开(公告)日：2019-05-02

    申请号：US16085087

    申请日：2017-03-15

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Johannes Yzebrand TICHELAAR ,  Johannes Gerardus Rijk VAN MOURIK ,  Jeroen Hubert Christoffel Jacobus STESSEN ,  Roeland Focco Everhard GORIS ,  Mark Jozef Willem MERTENS ,  Patrick Luc Els VANDEWALLE ,  Rutger NIJLAND

    IPC: G06T5/00 ,  H04N19/186 ,  H04N19/60

    Abstract: To enable a high quality HDR video communication, which can work by sending corresponding LDR images potentially via established LDR video communication technologies, which works well in practical situations, applicant has invented a HDR video decoder (600, 1100) arranged to calculate a HDR image (Im_RHDR) based on applying to a received 100 nit standard dynamic range image (Im_RLDR) a set of luminance 5 transformation functions, the functions comprising at least a coarse luminance mapping (FC), which is applied by a dynamic range optimizer (603), and a mapping of the darkest value (0) of an intermediate luma (Y′HPS), being output of the dynamic range optimizer, to a received black offset value (Bk_off) by a range stretcher (604), the video decoder comprising a gain limiter (611, 1105) arranged to apply an alternate luminance transformation function to 10 calculate a subset (502) of the darkest luminances of the HDR image, from corresponding darkest lumas (Y′_in) of the standard dynamic range image.

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