Patents by Inventor Walter C. Gish
Walter C. Gish has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170289546Abstract: 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).Type: ApplicationFiled: June 16, 2017Publication date: October 5, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, Christopher J. Vogt
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Patent number: 9756353Abstract: An inter-layer reference picture is generated either by considering an inverse mapped signal from a base layer, a temporal signal from an enhancement layer, or a combination of both.Type: GrantFiled: December 20, 2012Date of Patent: September 5, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Yan Ye, Peng Yin, Yuwen He, Walter C. Gish
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Publication number: 20170019670Abstract: Techniques use multiple lower bit depth (e.g., 8 bits) codecs to provide higher bit depth (e.g., 12+ bits) high dynamic range images from an upstream device to a downstream device. Multiple layers comprising a base layer and one or more enhancement layers may be used to carry video signals comprising image data compressed by lower bit depth encoders to a downstream device, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization.Type: ApplicationFiled: September 29, 2016Publication date: January 19, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: Guan-Ming SU, Sheng QU, Samir N. HULYALKAR, Tao CHEN, Walter C. GISH, Hubert KOEPFER
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Patent number: 9497456Abstract: Techniques use multiple lower bit depth codecs to provide higher bit depth, high dynamic range, images from an upstream device to a downstream device. A base layer and one or more enhancement layers may be used to carry video signals, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance.Type: GrantFiled: November 1, 2012Date of Patent: November 15, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Guan-Ming Su, Sheng Qu, Samir N. Hulyalkar, Tao Chen, Walter C. Gish, Hubert Koepfer
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Patent number: 9479750Abstract: 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.Type: GrantFiled: September 27, 2013Date of Patent: October 25, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, David Ruhoff, Jon S. McElvain, Christopher J. Vogt, Kimball Darr Thurston, III
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Patent number: 9294771Abstract: 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).Type: GrantFiled: December 2, 2013Date of Patent: March 22, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, Christopher J. Vogt
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Publication number: 20150304658Abstract: 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).Type: ApplicationFiled: July 1, 2015Publication date: October 22, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. Gish, Christopher J. Vogt
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Patent number: 9113165Abstract: 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).Type: GrantFiled: March 24, 2015Date of Patent: August 18, 2015Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, Christopher J. Vogt
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Publication number: 20150208071Abstract: 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).Type: ApplicationFiled: March 24, 2015Publication date: July 23, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. Gish, Christopher J. Vogt
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Patent number: 9077942Abstract: 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.Type: GrantFiled: October 9, 2014Date of Patent: July 7, 2015Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, David Ruhoff, Jon S. McElvain
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Patent number: 9060180Abstract: A visual dynamic range (VDR) signal and a standard dynamic range (SDR) signal are received. A first (e.g., MPEG-2) encoder encodes a base layer (BL) signal. A second encoder encodes an enhancement layer (EL). The EL signal represents information with which the VDR signal may be reconstructed, e.g., using the BL and the EL signals. The first encoder encodes the SDR signal with inverse discrete cosine transform (IDCT) coefficients that have a fixed precision, e.g., which represent fixed-point approximations of transform coefficients that may have arbitrary precisions. The BL signal is encoded in a stream that conforms with an Advanced Television Standards Committee (ATSC) standard. The EL is encoded in a stream that conforms with an ATSC enhanced vestigial sideband (E-VSB) standard. The BL and EL signals are combined; e.g., multiplexed, and transmitted together.Type: GrantFiled: May 23, 2012Date of Patent: June 16, 2015Assignee: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. Gish, Samir Hulyalkar
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Patent number: 9042682Abstract: One or more derived versions of image content may be obtained by interpolating two or more source versions of the same image content. A derived version may be targeted for a class of displays that differs from classes of displays targeted by the source versions. Source images in a source version may have been color graded in a creative process by a content creator/colorist. Interpolation of the source versions may be performed with interpolation parameters having two or more different values in two or more different clusters in at least one of the source images. A normalized version may be used to allow efficient distribution of multiple versions of the same content to a variety of downstream media processing devices, and to preserve or restore image details otherwise lost in one or more of the source versions.Type: GrantFiled: May 22, 2013Date of Patent: May 26, 2015Assignee: Dolby Laboratories Licensing CorporationInventors: Robin Atkins, Tao Chen, Scott Daly, Walter C. Gish, Samir N. Hulyalkar, Michael Rockwell
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Publication number: 20150022685Abstract: 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.Type: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Applicant: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, David Ruhoff, Jon S. McElvain
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Patent number: 8922720Abstract: 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.Type: GrantFiled: September 3, 2014Date of Patent: December 30, 2014Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, Christopher J. Vogt
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Publication number: 20140368732Abstract: 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.Type: ApplicationFiled: September 3, 2014Publication date: December 18, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. GISH, Christopher J. VOGT
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Publication number: 20140327822Abstract: 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.Type: ApplicationFiled: December 6, 2012Publication date: November 6, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. Gish, Christopher J. Vogt
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Patent number: 8872981Abstract: 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.Type: GrantFiled: December 6, 2012Date of Patent: October 28, 2014Assignee: Dolby Laboratories Licensing CorporationInventors: Walter C. Gish, Christopher J. Vogt
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Publication number: 20140247869Abstract: Techniques use multiple lower bit depth codecs to provide higher bit depth, high dynamic range, images from an upstream device to a downstream device. A base layer and one or more enhancement layers may be used to carry video signals, wherein the base layer cannot be decoded and viewed on its own. Lower bit depth input image data to base layer processing may be generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals may comprise residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance.Type: ApplicationFiled: November 1, 2012Publication date: September 4, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Guan-Ming Su, Sheng Qu, Samir N. Hulyalkar, Tao Chen, Walter C. Gish, Hubert Koepfer
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Publication number: 20140105289Abstract: In layered Visual Dynamic range (VDR) coding, inter-layer prediction requires several color-format transformations between the input VDR and Standard Dynamic Range (SDR) signals. Coding and decoding architectures are presented wherein inter-layer prediction is performed in the SDR-based color format, thus reducing computational complexity in both the encoder and the decoder, without compromising coding efficiency or coding quality.Type: ApplicationFiled: May 11, 2012Publication date: April 17, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Guan-Ming Su, Sheng Qu, Walter C. Gish, Zhen Li
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Publication number: 20140086312Abstract: 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).Type: ApplicationFiled: December 2, 2013Publication date: March 27, 2014Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Walter C. Gish, Christopher J. Vogt