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公开(公告)号：US11582489B2
公开(公告)日：2023-02-14
申请号：US16205907
申请日：2018-11-30
发明人： Mark Shaw , Albert Parra , Jan Allebach
IPC分类号： H04N19/85 , H04N19/139 , H04N19/172 , H04N19/117 , H04N19/14 , H04N19/186
摘要： A method is disclosed. In the method, color differences are calculated between a current video frame and a motion predicted version of the current video frame based on a human visual system's ability to perceive the color differences. Also, information in a difference frame is discarded based on the color differences. The difference frame includes differences between the current video frame and the motion predicted version of the current video frame.
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公开(公告)号：US10757435B2
公开(公告)日：2020-08-25
申请号：US15749213
申请日：2016-01-22
发明人： Mark Shaw , Jan P. Allebach , Edward J. Delp
IPC分类号： H04N19/503 , H04N19/172 , H04N19/132 , H04N19/67 , H04N19/176 , H04N19/14 , H04N19/86
摘要： In example implementations, a method executed by a processor is provided. The method determines an amount of video information that is lost in a video frame due to compression. A drift correction is applied to the video frame to add back a percentage of the amount of video information that is lost. The video frame is encoded with the drift correction.
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公开(公告)号：US20190116383A1
公开(公告)日：2019-04-18
申请号：US16205907
申请日：2018-11-30
发明人： Mark Shaw , Albert Parra , Jan Allebach
IPC分类号： H04N19/85 , H04N19/186 , H04N19/14 , H04N19/139 , H04N19/172 , H04N19/117
摘要： A method is disclosed. In the method, color differences are calculated between a current video frame and a motion predicted version of the current video frame based on a human visual system's ability to perceive the color differences. Also, information in a difference frame is discarded based on the color differences. The difference frame includes differences between the current video frame and the motion predicted version of the current video frame.
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公开(公告)号：US10531103B2
公开(公告)日：2020-01-07
申请号：US15517539
申请日：2014-10-16
发明人： Mark Shaw , Jan P. Allebach , Edward J. Delp
IPC分类号： H04N19/182 , H04N19/17 , H04N19/167 , H04N19/10 , H04N19/51 , H04N21/234
摘要： A video coder includes a processing resource and a non-transitory storage device containing instructions executable by the processing resource to compute a weighted Δ frame based on a saliency map and a Δ frame. The saliency map is to indicate the relative importance of each pixel in a current frame based on its perceptual significance. The Δ frame is to include differences between corresponding pixels in a current frame and a motion predicted frame.
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公开(公告)号：US20180295255A1
公开(公告)日：2018-10-11
申请号：US15767178
申请日：2016-02-11
发明人： Cheng Lu , Mark Shaw , David C Day , Randall G Guay , Jan Allebach
CPC分类号： H04N1/32277 , G06F3/122 , G06F3/1244 , H03M7/30 , H03M7/3059 , H03M7/607 , H03M7/6094 , H04L69/04 , H04N1/32347
摘要： A device includes a processor and associated memory; and a compressor for compressing data representing an electronic document, the electronic document comprising a number of objects. The compressor is to determine for each object of the document whether data of that object is to be compressed with lossy or lossless compression and to compress the data accordingly to generate a compressed electronic document.
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公开(公告)号：US20180227590A1
公开(公告)日：2018-08-09
申请号：US15749213
申请日：2016-01-22
发明人： Mark Shaw , Jan P. Allebach , Edward J. Delp
IPC分类号： H04N19/503 , H04N19/86 , H04N19/14 , H04N19/172
摘要： In example implementations, a method executed by a processor is provided. The method determines an amount of video information that is lost in a video frame due to compression. A drift correction is applied to the video frame to add back a percentage of the amount of video information that is lost. The video frame is encoded with the drift correction.
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公开(公告)号：US10594890B2
公开(公告)日：2020-03-17
申请号：US15767178
申请日：2016-02-11
发明人： Cheng Lu , Mark Shaw , David C Day , Randall G Guay , Jan Allebach
摘要： A device includes a processor and associated memory; and a compressor for compressing data representing an electronic document, the electronic document comprising a number of objects. The compressor is to determine for each object of the document whether data of that object is to be compressed with lossy or lossless compression and to compress the data accordingly to generate a compressed electronic document.
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公开(公告)号：US10999452B2
公开(公告)日：2021-05-04
申请号：US16604154
申请日：2018-01-25
发明人： Richard E Maggard , Mark Shaw , Katelyn Christene Morse , Jan Allebach , Zuguang Xiao , Shaoyuan Xu
摘要： Pixel blocks of a user-generated print job raster page are clustered into raster color clusters, and pixel blocks of a corresponding scanned page are clustered into scanned color clusters. For each raster color cluster, if a color difference between the cluster and a corresponding scanned color cluster is greater than a threshold, color fading of the cluster is determined from simulated depletion of each colorant of a printing device, and a likely depleted colorant is determined based on the corresponding scanned color cluster and the determined color fading. A most likely depleted colorant is determined from the likely depleted colorant predicted for each raster color cluster for which the determined color difference is greater than the threshold.
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公开(公告)号：US10893171B2
公开(公告)日：2021-01-12
申请号：US16650740
申请日：2017-10-10
发明人： Mark Shaw
IPC分类号： H04N1/60
摘要： The present application includes devices and methods for using corrective data for a reconstructed table. In some examples, a computing device can generate a key from a reconstructed table, determine corrective data for the reconstructed table based on the generated key, and implement the corrective data to the reconstructed table to generate an updated table.
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公开(公告)号：US20200369041A1
公开(公告)日：2020-11-26
申请号：US16764071
申请日：2017-12-01
发明人： Mark Shaw , Mark Wibbels
IPC分类号： B41J2/21 , B41J29/393 , B41J29/19 , B41J2/125
摘要： In one example, a printer with adaptive sampling includes a print engine, a monochrome scanner, a light source, and an analysis module. The light source has independently controlled primaries oriented to illuminate a media from the print engine. The analysis module includes a page selection module to select a chosen page of media for analysis, a heuristic analysis module to analyze the chosen page and determine a region of the page for analysis, a light control module to select a mono-color for the light source in region on the chosen page, and a quality module to accept an image of the chosen page and a scan of the chosen page with the monochrome scanner illuminated by the selected mono-color and compare the image and the scan within the region to determine a discrepancy.
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