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    Quantization Control for Variable Bit Depth
    11.
    发明申请
    Quantization Control for Variable Bit Depth 审中-公开

    公开(公告)号：US20190037214A1

    公开(公告)日：2019-01-31

    申请号：US16150073

    申请日：2018-10-02

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Walter C. Gish ,  Christopher J. Vogt

    IPC: H04N19/124 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61

    Abstract: The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).

    Quantization Control for Variable Bit Depth
    12.
    发明申请
    Quantization Control for Variable Bit Depth 审中-公开

    公开(公告)号：US20180167616A1

    公开(公告)日：2018-06-14

    申请号：US15889378

    申请日：2018-02-06

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Walter C. Gish ,  Christopher J. Vogt

    IPC: H04N19/124 ,  H04N19/61 ,  H04N19/126 ,  H04N19/184

    CPC classification number: H04N19/124 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61

    Abstract: The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).

    Quantization control for variable bit depth
    16.
    发明授权
    Quantization control for variable bit depth 有权

    公开(公告)号：US10728554B2

    公开(公告)日：2020-07-28

    申请号：US16695935

    申请日：2019-11-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Walter C. Gish ,  Christopher J. Vogt

    IPC: H04N19/124 ,  H04N19/61 ,  H04N19/126 ,  H04N19/184

    Abstract: The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).

    Quantization Control for Variable Bit Depth
    18.
    发明申请
    Quantization Control for Variable Bit Depth 有权

    公开(公告)号：US20150304658A1

    公开(公告)日：2015-10-22

    申请号：US14789419

    申请日：2015-07-01

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Walter C. Gish ,  Christopher J. Vogt

    IPC: H04N19/124 ,  H04N19/61 ,  H04N19/184

    CPC classification number: H04N19/124 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61

    Abstract: The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).

    Quantization control for variable bit depth
    19.
    发明授权
    Quantization control for variable bit depth 有权
    可变位深度的量化控制

    公开(公告)号：US09113165B2

    公开(公告)日：2015-08-18

    申请号：US14666595

    申请日：2015-03-24

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Walter C. Gish ,  Christopher J. Vogt

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61

    CPC classification number: H04N19/124 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61

    Abstract: The quantization parameter QP is well-known in digital video compression as an indication of picture quality. Digital symbols representing a moving image are quantized with a quantizing step that is a function QSN of the quantization parameter QP, which function QSN has been normalized to the most significant bit of the bit depth of the digital symbols. As a result, the effect of a given QP is essentially independent of bit depth a particular QP value has a standard effect on image quality, regardless of bit depth. The invention is useful, for example, in encoding and decoding at different bit depths, to generate compatible, bitstreams having different bit depths, and to allow different bit depths for different components of a video signal by compressing each with the same fidelity (i.e., the same QP).

    Abstract translation: 量化参数QP在数字视频压缩中是众所周知的，作为图像质量的指示。 表示运动图像的数字符号用量化步骤进行量化，该量化步骤是量化参数QP的函数QSN，QSN已被归一化为数字符号的比特深度的最高有效位。 结果，给定QP的效果基本上与比特深度无关，特定的QP值对图像质量具有标准影响，而不考虑比特深度。 本发明例如在不同比特深度的编码和解码中是有用的，以产生具有不同比特深度的兼容的比特流，并且通过以相同的保真度来压缩每个视频信号的不同分量，从而允许不同的比特深度（即， 相同的QP）。

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