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公开(公告)号：US20110235720A1
公开(公告)日：2011-09-29
申请号：US12984992
申请日：2011-01-05
申请人： Francesco Banterle , Alessandro Artusi , Kurt Debattista , Patrick Ledda , Gerhard Bonnet , Gavin John Edwards , Alan Chalmers
发明人： Francesco Banterle , Alessandro Artusi , Kurt Debattista , Patrick Ledda , Gerhard Bonnet , Gavin John Edwards , Alan Chalmers
IPC分类号： H04N7/26
CPC分类号： G06T5/009 , G06T5/007 , G06T2207/10016 , G06T2207/20028 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/33 , H04N19/34 , H04N19/61
摘要： A method of producing a compressed video data stream (12) by compressing a stream of relatively high dynamic range video frames (2). A bilateral filter (3) extracts a base frame (4) with luminance information. The base frame (4) and the original frame (2) are used to provide a detail frame (5) with chroma information. A tone mapping operation (6) is selected (7, 11) and applied to the base frame to generate a relatively low dynamic range base frame (8), which is then compressed (9). The detail frame (5) is compressed separately. Final frame data (12) is then created, consisting of the compressed relatively low dynamic range base frame, the compressed detail frame, and stored information in respect of the tone mapping operation that had been applied to the base frame.
摘要翻译： 一种通过压缩相对高动态范围视频帧（2）的流来产生压缩视频数据流（12）的方法。 双向滤波器（3）用亮度信息提取基本帧（4）。 基帧（4）和原始帧（2）用于提供具有色度信息的细节帧（5）。 选择色调映射操作（6）（7,11）并将其应用于基本帧以产生相对较低的动态范围基本帧（8），然后将其压缩（9）。 细节框架（5）被单独压缩。 然后创建最终帧数据（12），其包括压缩的相对较低的动态范围基本帧，压缩细节帧以及已经应用于基本帧的色调映射操作的存储信息。
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公开(公告)号：US09406112B2
公开(公告)日：2016-08-02
申请号：US12984992
申请日：2011-01-05
申请人： Francesco Banterle , Alessandro Artusi , Kurt Debattista , Patrick Ledda , Gerhard Bonnet , Gavin John Edwards , Alan Chalmers
发明人： Francesco Banterle , Alessandro Artusi , Kurt Debattista , Patrick Ledda , Gerhard Bonnet , Gavin John Edwards , Alan Chalmers
IPC分类号： G06T5/00 , H04N19/33 , H04N19/34 , H04N19/61 , H04N19/176 , H04N19/186 , H04N19/136
CPC分类号： G06T5/009 , G06T5/007 , G06T2207/10016 , G06T2207/20028 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/33 , H04N19/34 , H04N19/61
摘要： A method of producing a compressed video data stream (12) by compressing a stream of relatively high dynamic range video frames (2). A bilateral filter (3) extracts a base frame (4) with luminance information. The base frame (4) and the original frame (2) are used to provide a detail frame (5) with chroma information. A tone mapping operation (6) is selected (7, 11) and applied to the base frame to generate a relatively low dynamic range base frame (8), which is then compressed (9). The detail frame (5) is compressed separately. Final frame data (12) is then created, consisting of the compressed relatively low dynamic range base frame, the compressed detail frame, and stored information in respect of the tone mapping operation that had been applied to the base frame.
摘要翻译： 一种通过压缩相对高动态范围视频帧（2）的流来产生压缩视频数据流（12）的方法。 双向滤波器（3）用亮度信息提取基本帧（4）。 基帧（4）和原始帧（2）用于提供具有色度信息的细节帧（5）。 选择色调映射操作（6）（7,11）并将其应用于基本帧以产生相对较低的动态范围基本帧（8），然后将其压缩（9）。 细节框架（5）被单独压缩。 然后创建最终帧数据（12），其包括压缩的相对较低的动态范围基本帧，压缩细节帧以及已经应用于基本帧的色调映射操作的存储信息。
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公开(公告)号：US08289412B2
公开(公告)日：2012-10-16
申请号：US12516235
申请日：2007-11-27
摘要： A method for increasing dynamic range of original image data representing an image comprises applying an expansion function to generate from the original image data expanded data having a dynamic range greater than that of the original image data and, obtaining an expand map comprising data indicative of a degree of luminance of regions associated with pixels in the image. The method then combines the original image data and the expanded data according to the expand map to yield enhanced image data. Apparatus for boosting the dynamic range of image data comprises a dynamic range expander that produces expanded data, a luminance analyzer that produces an expand map and a combiner that combines the original and expanded data according to a variable weighting provided by the expand map.
摘要翻译： 用于增加表示图像的原始图像数据的动态范围的方法包括应用扩展函数从原始图像数据生成动态范围大于原始图像数据的扩展数据，并且获得包括指示 与图像中的像素相关联的区域的亮度。 该方法然后根据扩展图合成原始图像数据和扩展数据，以产生增强的图像数据。 用于增强图像数据的动态范围的装置包括产生扩展数据的动态范围扩展器，产生扩展图的亮度分析器和根据由扩展图提供的可变加权组合原始和扩展数据的组合器。
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公开(公告)号：US20100208143A1
公开(公告)日：2010-08-19
申请号：US12516235
申请日：2007-11-27
IPC分类号： H04N5/52
摘要： A method for increasing dynamic range of original image data representing an image comprises applying an expansion function to generate from the original image data expanded data having a dynamic range greater than that of the original image data and, obtaining an expand map comprising data indicative of a degree of luminance of regions associated with pixels in the image. The method then combines the original image data and the expanded data according to the expand map to yield enhanced image data. Apparatus for boosting the dynamic range of image data comprises a dynamic range expander that produces expanded data, a luminance analyzer that produces an expand map and a combiner that combines the original and expanded data according to a variable weighting provided by the expand map.
摘要翻译： 用于增加表示图像的原始图像数据的动态范围的方法包括应用扩展函数从原始图像数据生成动态范围大于原始图像数据的扩展数据，并且获得包括指示 与图像中的像素相关联的区域的亮度。 该方法然后根据扩展图合成原始图像数据和扩展数据，以产生增强的图像数据。 用于增强图像数据的动态范围的装置包括产生扩展数据的动态范围扩展器，产生扩展图的亮度分析器和根据由扩展图提供的可变加权组合原始和扩展数据的组合器。
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