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    Image processing device and method
    46.
    发明授权
    Image processing device and method 有权

    公开(公告)号：US09686541B2

    公开(公告)日：2017-06-20

    申请号：US14375357

    申请日：2013-02-28

    Applicant: SONY CORPORATION

    Inventor： Junichi Tanaka ,  Yoshitaka Morigami

    IPC: H04N19/126 ,  H04N19/463 ,  H04N19/59 ,  H04N19/70 ,  H04N19/61

    CPC classification number: H04N19/124 ,  H04N19/122 ,  H04N19/126 ,  H04N19/18 ,  H04N19/30 ,  H04N19/463 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70

    Abstract: The present disclosure relates to an image processing device and method that enable suppression of an increase in the amount of coding of a scaling list.An image processing device of the present disclosure sets a replacement difference coefficient that is a difference between a replacement coefficient and a coefficient located at the beginning of a quantization matrix whose size is limited to not greater than a transmission size that is a maximum size allowed in transmission, the replacement coefficient being used to replace a coefficient located at the beginning of an up-converted quantization matrix which is obtained by up-converting the quantization matrix to the same size as a block size that is a unit of processing in which dequantization is performed, quantizes an image to generate quantized data, and transmit encoded data obtained by encoding the generated quantized data, replacement coefficient data obtained by encoding the replacement coefficient, and replacement difference coefficient data obtained by encoding the set replacement difference coefficient. The present disclosure can be applied to an image processing device.

    Image processing device and method with a scalable quantization matrix
    49.
    发明授权
    Image processing device and method with a scalable quantization matrix 有权

    公开(公告)号：US11539954B2

    公开(公告)日：2022-12-27

    申请号：US16601590

    申请日：2019-10-15

    Applicant: Sony Corporation

    Inventor： Junichi Tanaka ,  Yoshitaka Morigami

    IPC: H04N19/124 ,  H04N19/70 ,  H04N19/61 ,  H04N19/59 ,  H04N19/126 ,  H04N19/463 ,  H04N19/122 ,  H04N19/18 ,  H04N19/30

    Abstract: An image processing device and method that enable suppression of an increase in the amount of coding of a scaling list. The image processing device sets a coefficient located at the beginning of a quantization matrix by adding a replacement difference coefficient that is a difference between a replacement coefficient used to replace a coefficient located at the beginning of the quantization matrix and the coefficient located at the beginning of the quantization matrix to the coefficient located at the beginning of the quantization matrix; up-converts the set quantization matrix; and dequantizes quantized data using an up-converted quantization matrix in which a coefficient located at the beginning of the up-converted quantization matrix has been replaced with the replacement coefficient. The device and method can be applied to an image processing device.

    Image processing apparatus and image processing method
    50.
    发明授权
    Image processing apparatus and image processing method 有权

    公开(公告)号：US11290698B2

    公开(公告)日：2022-03-29

    申请号：US15766625

    申请日：2016-10-28

    Applicant: SONY CORPORATION

    Inventor： Junichi Tanaka

    IPC: H04N13/111 ,  H04N13/00 ,  H04N19/46 ,  H04N19/597 ,  G06T7/593 ,  H04N13/194 ,  H04N13/161

    Abstract: There is provided an image processing apparatus and an image processing method by which three-dimensional data can be generated with high accuracy on the basis of two-dimensional image data and depth image data. A coordinate transformation data generation unit generates, on the basis of two-dimensional image data of a first viewpoint group and two-dimensional image data of a second viewpoint group, coordinate transformation data for converting a three-dimensional position in a first three-dimensional coordinate system of the first viewpoint group into a three-dimensional position in a second three-dimensional coordinate system of the second viewpoint group. A metadata addition unit transmits coordinate transformation information including encoded data of the two-dimensional image data of the first viewpoint group and depth image data, encoded data of the two-dimensional image data and depth image data of the second viewpoint group and coordinate transformation data generated by the coordinate transformation data generation unit.

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