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公开(公告)号：US20160323556A1
公开(公告)日：2016-11-03
申请号：US14862027
申请日：2015-09-22
IPC分类号： H04N9/67 , H04N19/124 , H04N19/60 , H04N19/52 , H04N19/44 , H04N19/184 , H04N19/593 , H04N19/186 , H04N19/18
CPC分类号： H04N19/186 , G06T5/007 , H04N9/67 , H04N19/124 , H04N19/85
摘要： A video coding pipeline is provided that can accommodate high dynamic range (HDR) and wide color gamut (WCG) content at a fixed bitrate. The video coding pipeline relies on separate chromaticity and luminance-specific transforms in order to process image content. Image content may be converted into a nearly perceptually uniform color space for coding in constant luminance. Moreover, chromaticity transforms are utilized which reduce coding errors in the chroma components (at the fixed bitrate) by enlarging the distribution of code words for compression.
摘要翻译： 提供了可以以固定比特率适应高动态范围（HDR）和宽色域（WCG）内容的视频编码流水线。 视频编码流水线依赖于单独的色度和亮度特定的变换来处理图像内容。 图像内容可以转换成几乎感知上均匀的颜色空间，用于以恒定亮度进行编码。 此外，利用通过扩大用于压缩的代码字的分布来减少色度分量（以固定比特率）的编码错误的色度变换。
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公开(公告)号：US20180218709A1
公开(公告)日：2018-08-02
申请号：US15422210
申请日：2017-02-01
发明人： TUNC OZAN AYDIN , SAMIR MAHMALAT
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G09G5/005 , G09G5/02 , G09G2320/0238 , G09G2320/0271 , G09G2320/0626 , G09G2320/10 , G09G2360/141 , G09G2360/144 , G09G2360/147 , G09G2360/16
摘要： One or more levels of maladaptation are calculated relative to frames of media content having abrupt jumps from periods of low illumination to bright illumination when visual acuity may be lost and/or discomfort may be experienced. These levels of maladaptation may be correlated with subjectively determined levels of perceived luminance discomfort. Based upon the levels of perceived luminance discomfort that can be derived from the levels of maladaptation, the media content may be adjusted.
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公开(公告)号：US20170154415A1
公开(公告)日：2017-06-01
申请号：US14954652
申请日：2015-11-30
IPC分类号： G06T7/00
CPC分类号： G06T7/0002 , G06T2207/10016 , G06T2207/30168 , H04N17/004 , H04N19/00 , H04N19/85
摘要： Systems and methods are disclosed for weighting the image quality prediction of any visual-attention-agnostic quality metric with a saliency map. By accounting for the salient regions of an image or video frame, the disclosed systems and methods may dramatically improve the precision of the visual-attention-agnostic quality metric during image or video quality assessment. In one implementation, a method of saliency-weighted video quality assessment includes: determining a per-pixel image quality vector of an encoded video frame; determining per-pixel saliency values of the encoded video frame or a reference video frame corresponding to the encoded video frame; and computing a saliency-weighted image quality metric of the encoded video frame by weighting the per-pixel image quality vector using the per-pixel saliency values.
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4.发明申请METHODS FOR CREATING AND DISTRIBUTING ART-DIRECTABLE CONTINUOUS DYNAMIC RANGE VIDEO 审中-公开创造和分发直观连续动态范围视频的方法公开(公告)号：US20160353164A1
公开(公告)日：2016-12-01
申请号：US14861587
申请日：2015-09-22
发明人： ALJOSCHA SMOLIC , ALEXANDRE CHAPIRO , SIMONE CROCI , TUNC OZAN AYDIN , NIKOLCE STEFANOSKI , MARKUS GROSS
IPC分类号： H04N21/4402 , G11B27/031 , H04N21/845 , G06T5/00
CPC分类号： H04N21/4402 , G11B27/031 , G11B27/34 , H04N19/00 , H04N19/186 , H04N21/845
摘要： Novel systems and methods are described for creating, compressing, and distributing video or image content graded for a plurality of displays with different dynamic ranges. In implementations, the created content is “continuous dynamic range” (CDR) content—a novel representation of pixel-luminance as a function of display dynamic range. The creation of the CDR content includes grading a source content for a minimum dynamic range and a maximum dynamic range, and defining a luminance of each pixel of an image or video frame of the source content as a continuous function between the minimum and the maximum dynamic ranges. In additional implementations, a novel graphical user interface for creating and editing the CDR content is described.
摘要翻译： 描述了用于创建，压缩和分发用于具有不同动态范围的多个显示器分级的视频或图像内容的新颖系统和方法。 在实现中，创建的内容是“连续动态范围”（CDR）内容 - 作为显示动态范围的函数的像素亮度的新颖表示。 CDR内容的创建包括对最小动态范围和最大动态范围的源内容进行分级，并将源内容的图像或视频帧的每个像素的亮度定义为最小和最大动态之间的连续函数 范围。 在另外的实现中，描述了用于创建和编辑CDR内容的新颖的图形用户界面。
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5.发明申请公开(公告)号：US20180131841A1
公开(公告)日：2018-05-10
申请号：US15458899
申请日：2017-03-14
发明人： SAMIR MAHMALAT , TUNC OZAN AYDIN , ALJOSA SMOLIC
CPC分类号： H04N1/6058 , G06T9/00 , H04N1/6005 , H04N1/6008 , H04N1/644 , H04N19/186 , H04N19/85 , H04N19/98
摘要： The disclosure describes a high dynamic range video coding pipeline that may reduce color artifacts and improve compression efficiency. The disclosed pipeline separates the luminance component from the chrominance components of an input signal (e.g., an RGB source video) and applies a scaling of the chrominance components before encoding, thereby reducing perceivable color artifacts while maintaining luminance quality.
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公开(公告)号：US20150078661A1
公开(公告)日：2015-03-19
申请号：US14469191
申请日：2014-08-26
发明人： MIGUEL GRANADOS , JOSE RAFAEL TENA , TUNC OZAN AYDIN , JEAN FRANCOIS LALONDE , CHRISTIAN THEOBALT , IAIN MATTHEWS
IPC分类号： G06T5/00
CPC分类号： G06T5/009 , G06T5/003 , G06T5/50 , G06T2207/10024 , G06T2207/20208 , G06T2207/20216 , G06T2207/20221
摘要： Algorithms for improving the performance of conventional tone mapping operators (TMO) by calculating both a contrast waste score and a contrast loss score for a first tone-mapped image produced by the TMO. The two contrast scores can be used to optimize the performance of the TMO by reducing noise and improving contrast. Algorithms for generating an HDR image by converting non-linear color space images into linear color space format, aligning the images to a reference, de-ghosting the aligned images if necessary, and merging the aligned (and potentially de-ghosted) images to create an HDR image. The merging can be performed with exposure fusion, HDR reconstruction, or other suitable techniques.
摘要翻译： 通过计算TMO产生的第一个色调映射图像的对比度浪费评分和对比度损失分数来提高常规色调映射算子（TMO）的性能的算法。 两个对比度分数可用于通过降低噪音和改善对比度来优化TMO的性能。 用于通过将非线性颜色空间图像转换为线性颜色空间格式来生成HDR图像的算法，将图像对准参考，如果需要，将对齐的图像对焦，并合并对齐（并且可能去重影）的图像以创建 HDR图像。 可以通过曝光融合，HDR重建或其它合适的技术进行合并。
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