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公开(公告)号：US09294771B2
公开(公告)日：2016-03-22
申请号：US14093852
申请日：2013-12-02
IPC分类号： H04N19/124 , H04N19/126 , H04N19/61 , H04N19/184
CPC分类号： H04N19/124 , H04N19/126 , H04N19/184 , H04N19/61
摘要： 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).
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2.发明授权Backwards-compatible delivery of digital cinema content with extended dynamic range 有权数字电影内容的向后兼容传输，具有扩展的动态范围公开(公告)号：US08872981B1
公开(公告)日：2014-10-28
申请号：US14363861
申请日：2012-12-06
CPC分类号： G06T5/007 , G06T2200/16 , G06T2207/10016 , G06T2207/10024 , G06T2207/20048 , G06T2207/20208 , H04N9/68 , H04N9/77 , H04N19/186 , H04N19/46 , H04N19/85
摘要： A digital cinema signal is encoded to produce a resulting coded digital cinema bitstream. Decoding the resulting coded digital cinema bitstream allows backwards-compatible delivery of digital cinema content. A digital image or video signal is preprocessed to produce two normalized digital image or video signals of differing quality levels and forward and inverse mapping parameters, which relate the normalized digital image or video signals. The preprocessing can be used prior to the encoding of a digital cinema signal to enable backwards-compatible delivery of digital cinema content.
摘要翻译： 数字电影信号被编码以产生最终的编码数字电影比特流。 解码所产生的编码数字电影比特流允许数字电影内容的向后兼容传送。 对数字图像或视频信号进行预处理，以产生两个不同质量级别的归一化数字图像或视频信号，以及与归一化数字图像或视频信号相关的正向和反向映射参数。 预处理可以在数字电影信号的编码之前使用，以实现数字电影内容的向后兼容传送。
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公开(公告)号：US20190037214A1
公开(公告)日：2019-01-31
申请号：US16150073
申请日：2018-10-02
IPC分类号： H04N19/124 , H04N19/126 , H04N19/184 , H04N19/61
摘要： 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).
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公开(公告)号：US10158835B2
公开(公告)日：2018-12-18
申请号：US15000782
申请日：2016-01-19
发明人： Walter Gish , Zhen Li , Donald Pian , Christopher J. Vogt , Hyung-Suk Kim , David Ruhoff
摘要： Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.
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公开(公告)号：US20180167616A1
公开(公告)日：2018-06-14
申请号：US15889378
申请日：2018-02-06
IPC分类号： H04N19/124 , H04N19/61 , H04N19/126 , H04N19/184
CPC分类号： H04N19/124 , H04N19/126 , H04N19/184 , H04N19/61
摘要： 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).
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公开(公告)号：US20140348426A1
公开(公告)日：2014-11-27
申请号：US14369073
申请日：2012-12-20
IPC分类号： G06T7/40
CPC分类号： H04N9/646 , G06T7/90 , G06T2207/10024 , H04N1/60 , H04N9/643 , H04N9/735 , H04N17/002 , H04N17/02
摘要： A substantially rectangular spectral representation is synthesized, which is adapted to produce either (a) image capture device sensor outputs if applied to an image capture device or (b) color values if applied to corresponding analysis functions. Spectral expansion, which can be used in various image processing methods, is achieved with the synthesized spectral representation.
摘要翻译： 合成基本上矩形的光谱表示，其适于产生（a）如果应用于图像捕获装置的图像捕获装置传感器输出，或（b）如果应用于相应的分析功能，则颜色值。 可以用于各种图像处理方法的光谱扩展通过合成的光谱表示来实现。
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公开(公告)号：US20140022410A1
公开(公告)日：2014-01-23
申请号：US14039415
申请日：2013-09-27
发明人： Walter C. Gish , David Ruhoff , Jon S. McElvain , Christopher J. Vogt , Kimball Darr Thurston, III
IPC分类号： H04N9/73
CPC分类号： H04N9/646 , G06T7/90 , G06T2207/10024 , H04N1/60 , H04N9/643 , H04N9/735 , H04N17/002 , H04N17/02
摘要： A substantially rectangular spectral representation is synthesized, which is adapted to produce image capture device sensor outputs if applied to an image capture device. The synthesized substantially rectangular spectral representation can be utilized in generating output color values of an output color space from image capture device sensor outputs, where the image capture device sensor outputs correspond to an image captured by an image capture device. The generated output color values correspond to colors perceived by the human visual system for the same image as that captured by the image capture device. Image capture device gamut is also determined.
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公开(公告)号：US11812020B2
公开(公告)日：2023-11-07
申请号：US17201129
申请日：2021-03-15
IPC分类号： H04N19/124 , H04N19/61 , H04N19/126 , H04N19/184
CPC分类号： H04N19/124 , H04N19/126 , H04N19/184 , H04N19/61
摘要： 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).
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公开(公告)号：US10951893B2
公开(公告)日：2021-03-16
申请号：US16939337
申请日：2020-07-27
IPC分类号： H04N19/124 , H04N19/184 , H04N19/126 , H04N19/61
摘要： 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).
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公开(公告)号：US09924172B2
公开(公告)日：2018-03-20
申请号：US15625192
申请日：2017-06-16
IPC分类号： H04N19/124 , H04N19/61 , H04N19/126 , H04N19/184
CPC分类号： H04N19/124 , H04N19/126 , H04N19/184 , H04N19/61
摘要： 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).
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