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    HIGH DEFINITION AND HIGH DYNAMIC RANGE CAPABLE VIDEO DECODER
    1.
    发明公开
    HIGH DEFINITION AND HIGH DYNAMIC RANGE CAPABLE VIDEO DECODER 审中-公开
    ZURHOCHAUFLÖSUNGUND ZU HOHEM DYNAMIKBEREICHFÄHIGERVIDEODECODIERER

    公开(公告)号：EP3108650A1

    公开(公告)日：2016-12-28

    申请号：EP15706220.9

    申请日：2015-02-21

    申请人： Koninklijke Philips N.V.

    发明人： STESSEN, Jeroen Hubert Christoffel Jacobus ,  VAN DER VLEUTEN, Renatus Josephus ,  VAN MOURIK, Johannes Gerardus Rijk ,  NIJLAND, Rutger

    IPC分类号： H04N1/64 ,  H04N9/67

    CPC分类号： H04N19/98 ,  H04N1/64 ,  H04N1/646 ,  H04N9/67 ,  H04N9/77 ,  H04N19/85

    摘要： Because we needed a new improved and very different color encoding space for being able to faithfully encode the presently emerging high dynamic range video for good quality rendering on emerging HDR displays such as the SIM2 display, we present around that new color space various new decoders which allow simplified processing, in particular the handling of all achromatic direction (i.e. luminance) optimization separate from the chromatic processing, and increased quality of the reconstructed HDR images. This is realized by a video decoder (350) having an input (358) for receiving a video signal (S_im) transmitted over a video transmission system or received on a video storage product, in which pixel colors are encoded with an achromatic luma (Y') coordinate and two chromaticity coordinates (u'',v''), the video decoder comprising a scaling unit (356) arranged to transform the chromaticity colors into a luminance-dependent chrominance color representation, by scaling with the achromatic luma.

    摘要翻译： 因为我们需要一个新的改进和非常不同的颜色编码空间，以便能够忠实地编码目前正在出现的高动态范围视频，以便在诸如SIM2显示器之类的新兴HDR显示器上获得良好的质量渲染，我们围绕着这种新的色彩空间呈现各种新的解码器 允许简化的处理，特别是与彩色处理分开的所有消色方向（即亮度）优化的处理以及重建的HDR图像的质量的提高。 这是通过具有输入（358）的视频解码器（350）来实现的，该输入端用于接收通过视频传输系统发送或接收在视频存储产品上的视频信号（S_im），其中像素颜色用无色亮度（Y '）坐标和两个色度坐标（u“，v”），所述视频解码器包括经缩放单元（356），所述缩放单元被布置为通过用所述消色差亮度缩放来将所述色度颜色变换为依赖于亮度的色度颜色表示。

    OPTIMIZING HIGH DYNAMIC RANGE IMAGES FOR PARTICULAR DISPLAYS
    6.
    发明公开
    OPTIMIZING HIGH DYNAMIC RANGE IMAGES FOR PARTICULAR DISPLAYS 审中-公开
    针对特定显示优化高动态范围图像

    公开(公告)号：EP3231174A1

    公开(公告)日：2017-10-18

    申请号：EP15762531.0

    申请日：2015-09-02

    申请人： Koninklijke Philips N.V.

    发明人： VAN MOURIK, Johannes Gerardus Rijk ,  MERTENS, Mark Jozef Willem ,  NIJLAND, Rutger

    IPC分类号： H04N9/68 ,  H04N5/20 ,  G06T5/00

    摘要： Color transformation apparatus (201) for calculating resultant colors (R2, G2, B2) of pixels of an output image for a display with a display peak brightness (PB_D) starting from input colors (R,G,B) of pixels of an input image (Im_in) having a maximum luma code corresponding to a first image peak brightness (PB_H) which is different from the display peak brightness, said color transformation apparatus comprising: a color transformation determination unit (102) arranged to determine a color transformation (g) from color processing specification data (MET) comprising at least one tone mapping function (CC) for at least a range of pixel luminances received via a metadata input (116), which color transformation specifies the calculation of at least some pixel colors of an image having corresponding to its maximum luma code a second image peak brightness (PB_L), which is different from the display peak brightness (PB_D) and the first image peak brightness (PB_H), and whereby the division of the first image peak brightness by the second image peak brightness is either larger than 2 or smaller than ½ ; a scaling factor determination unit (200) arranged to determine a resultant common multiplicative factor (gt), said scaling factor determination unit comprising:—a capability metric determination unit arranged to determine a metric for locating positions of display peak brightnesses between the first image peak brightness (PB_H), and the second image peak brightness (PB_L) and outside that range; and—a resultant multiplier determination unit arranged to determine from the display peak brightness (PB_D), the metric, and the color transformation the resultant common multiplicative factor (gt), and wherein the color transformation apparatus (201) further comprises a scaling multiplier (114) arranged to multiply a linear RGB color representation of the input colors with the resultant common multiplicative factor (gt).

    摘要翻译： 用于计算具有从输入的像素的输入颜色（R，G，B）开始的显示峰值亮度（PB_D）的显示的输出图像的像素的结果颜色（R2，G2，B2）的颜色变换设备 具有与显示峰值亮度不同的第一图像峰值亮度（PB_H）对应的具有最大亮度代码的图像（Im_in），所述颜色变换设备包括：颜色变换确定单元（102），被配置为确定颜色变换（g ）从包括经由元数据输入（116）接收的至少一个像素亮度范围的至少一个色调映射函数（CC）的颜色处理指定数据（MET）中确定，所述颜色变换指定计算至少一些像素颜色 图像具有对应于其最大亮度代码的与显示峰值亮度（PB_D）和第一图像峰值亮度（PB_H）不同的第二图像峰值亮度（PB_L），并且由此对 第二图像峰值亮度的第一图像峰值亮度或大于2或小于1/2; 所述缩放因子确定单元包括： - 能力度量确定单元，被配置为确定用于定位所述第一图像峰值之间的显示峰值亮度的位置的度量 亮度（PB_H）和第二图像峰值亮度（PB_L）以及该范围之外; 以及 - 结果乘数确定单元，被配置为根据显示峰值亮度（PB_D），度量和颜色变换确定所得到的公共乘法因子（gt），并且其中颜色变换设备（201）还包括缩放乘法器（ 114），其被布置为将输入颜色的线性RGB颜色表示与所得到的公共乘法因子（gt）相乘。

    COLOR SPACE AND DECODER FOR VIDEO
    7.
    发明公开
    COLOR SPACE AND DECODER FOR VIDEO 有权
    格拉纳达，德国，法国，德国，法国，德国，意大利

    公开(公告)号：EP3108649A1

    公开(公告)日：2016-12-28

    申请号：EP15705266.3

    申请日：2015-02-12

    申请人： Koninklijke Philips N.V.

    发明人： STESSEN, Jeroen Hubert Christoffel Jacobus ,  VAN DER VLEUTEN, Renatus Josephus ,  VAN MOURIK, Johannes Gerardus Rijk ,  NIJLAND, Rutger

    IPC分类号： H04N1/64 ,  H04N9/67

    CPC分类号： H04N19/186 ,  H04N1/646 ,  H04N9/67 ,  H04N9/77 ,  H04N19/44

    摘要： Because we needed a new improved and very different color encoding space for being able to faithfully encode the presently emerging high dynamic range video for good quality rendering on emerging HDR displays such as the SIM2 display, the video encoder (300) with an input (308) to obtain a video from a video source (301) wherein pixel colors are encoded in an (XYZ) color encoding, the video encoder comprising an opto-electronic conversion unit (304) arranged to convert the luminances (Y) of the pixel colors into lumas (Y') with a predetermined code allocation function (F), characterized in that the video encoder comprises a chromaticity determination unit (310), which is arranged to encode chromaticities (u'',v'') of pixel colors with lumas (Y') below a predetermined threshold luma (E') with a mathematical chromaticity definition which yields a maximum encodable saturation (S_bL) for a particular hue for pixel colors with a luma below the predetermined threshold luma (E') which is lower than a maximum encodable saturation (S_bH) for the particular hue for a pixel color with a luma above the predetermined threshold luma (E'), and a constant maximum encodable saturation (S_bH) for pixels with colors of a particular hue and a luma equal to or larger than the predetermined threshold luma (E').

    摘要翻译： 因为我们需要一个新的改进和非常不同的颜色编码空间，以便能够忠实地编码当前正在出现的高动态范围视频，以便在诸如SIM2显示器的新兴HDR显示器上实现良好质量渲染，具有输入（308）的视频编码器 ）以从视频源（301）获得视频，其中以（XYZ）颜色编码对像素颜色进行编码，所述视频编码器包括光电转换单元（304），其被配置为将像素颜色的亮度（Y） 以预定的码分配功能（F）进入亮度（Y'），其特征在于，所述视频编码器包括色度确定单元（310），其被配置为将像素颜色的色度（u“，v”）与亮度 Y'）低于具有数学色度定义的预定阈值亮度（E'），其为具有低于预定阈值亮度（E'）的像素颜色的特定色调产生最大可编码饱和度（S_bL） ch低于具有高于预定阈值亮度（E'）的亮度的像素颜色的特定色调的最大可编码饱和度（S_bH），以及对于具有特定色调的颜色的像素的恒定最大可编码饱和度（S_bH），以及 等于或大于预定阈值亮度（E'）的亮度。

    OPTIMIZING HIGH DYNAMIC RANGE IMAGES FOR PARTICULAR DISPLAYS
    8.
    发明公开
    OPTIMIZING HIGH DYNAMIC RANGE IMAGES FOR PARTICULAR DISPLAYS 审中-公开

    公开(公告)号：EP3394850A1

    公开(公告)日：2018-10-31

    申请号：EP16822989.6

    申请日：2016-12-21

    申请人： Koninklijke Philips N.V.

    发明人： MERTENS, Mark Jozef Willem ,  NIJLAND, Rutger ,  VAN MOURIK, Johannes Gerardus Rijk ,  TICHELAAR, Johannes Yzebrand

    IPC分类号： G09G5/10

    摘要： To enable practical and quick generation of a family of good looking HDR gradings for various displays on which the HDR image may need to be shown, we describe a color transformation apparatus (201) to calculate resultant colors (R2, G2, B2) of pixels of an output image (IM_MDR) for a display with a display peak brightness (PB_D) starting from input colors (R, G, B) of pixels of an input image (Im_in) having a maximum luma code corresponding to a first image peak brightness (PB_IM1) which is different from the display peak brightness, characterized in that the color transformation apparatus comprises: —a color transformation determination unit (102; 2501) arranged to determine a color transformation (TMF; g) as defined in color processing specification data (MET_1) comprising at least one tone mapping function (CC) received via a metadata input (116), which color transformation specifies how the luminances of pixels of the input image are to be converted into luminances for those pixels of a second image (IM_HDR) having corresponding to its maximum luma code a second image peak brightness (PB_IM2), which is different from the display peak brightness (PB_D) and the first image peak brightness (PB_IM1), and whereby the division of the first image peak brightness by the second image peak brightness is either larger than 2 or smaller than ½; —a scaling factor determination unit (200; 2603) arranged to determine a resultant common multiplicative factor (gt; Ls), the unit being arranged to apply determining along a direction (DIR) a position along a metric a position (M_PB_U) which corresponds with the display peak brightness (PB_D) and arranged to determine the resultant common multiplicative factor (gt; Ls) based on the position, and wherein the color transformation apparatus (201) further comprises: —a scaling multiplier (114) arranged to multiply each of the three color components of an RGB color representation of the input colors with the resultant common multiplicative factor (gt).

    METHODS AND APPARATUSES FOR CREATING CODE MAPPING FUNCTIONS FOR ENCODING AN HDR IMAGE, AND METHODS AND APPARATUSES FOR USE OF SUCH ENCODED IMAGES
    10.
    发明公开
    METHODS AND APPARATUSES FOR CREATING CODE MAPPING FUNCTIONS FOR ENCODING AN HDR IMAGE, AND METHODS AND APPARATUSES FOR USE OF SUCH ENCODED IMAGES 审中-公开
    方法和设备生成代码映射函数用于编码HDR图像和方法及装置采用这种编码图像

    公开(公告)号：EP3022895A1

    公开(公告)日：2016-05-25

    申请号：EP14734799.1

    申请日：2014-06-30

    申请人： Koninklijke Philips N.V.

    发明人： VAN DER VLEUTEN, Renatus Josephus ,  STESSEN, Jeroen Hubert Christoffel Jacobus ,  VAN MOURIK, Johannes Gerardus Rijk

    IPC分类号： H04N1/64 ,  H04N9/67 ,  H04N5/235

    CPC分类号： H04N19/46 ,  G06F3/1423 ,  G09G5/10 ,  G09G2320/0271 ,  H04N1/64 ,  H04N5/2355 ,  H04N9/68 ,  H04N19/36

    摘要： To enable better encoding of the currently starting to appear high dynamic range images for use in full high dynamic range technical systems (containing an HDR display, and e.g. in an HDR grading application of a HDR movie), we invented a method of encoding a high dynamic range image, comprising the steps of: inputting pixel colors of an input high dynamic range image, wherein the pixel colors have information of a luminance and a chromaticity; applying an inverse of a mapping function to derive a luma code (v) of the luminance of a pixel color, which mapping function is predetermined as comprising a first partial function which is defined as (I), in which rho is a tuning constant, and v is the luma code corresponding to a luminance to be encoded, and a second partial mapping defined as L=LmP65 in which Lm is a peak luminance of a predefined reference display, and gamma is a constant which is preferably equal to 2.4, outputting a matrix of pixels having a color encoding comprising the luma codes.

    摘要翻译： 为了使目前开始出现使用高动态范围图像在全高动态范围技术系统更好的编码（在HDR显示包含，并且例如在一个HDR电影的HDR分级应用程序），我们发明编码高的方法 动态范围图像的方法，包括以下步骤：输入一个输入的高动态范围图像的像素的颜色，worin像素颜色具有亮度和色度的信息; 施加到的映射函数的逆来导出亮度代码（V）的像素的颜色的亮度，这映射函数预定为包括第一部分函数的所有其被定义为（I）其中RHO是调谐常数， 并且v是亮度代码对应于亮度进行编码，和一个第二部分映射定义为L = LmP65在哪个Lm为预定的参考显示器的峰值亮度，和γ是一个常数所有其优选等于2.4，输出廷 具有彩色编码包含亮度码像素的矩阵。