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1. 发明申请

WO2015007505A1 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
标题翻译：用于创建编码HDR图像的代码映射函数的方法和装置，以及使用这样的编码图像的方法和装置
公开(公告)号：WO2015007505A1
公开(公告)日：2015-01-22
申请号：PCT/EP2014/063815
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 , 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 = L m P Y 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的高动态范围图像能够更好地编码，用于全高动态范围技术系统（包含HDR显示，例如在HDR电影的HDR分级应用中），我们发明了一种编码高动态范围图像，包括以下步骤： - 输入输入的高动态范围图像的像素颜色，其中像素颜色具有亮度和色度的信息; - 应用映射函数的逆来导出像素颜色的亮度的亮度代码（v），所述映射函数被预定为包括被定义为（I）的第一部分函数，其中rho是调谐常数，v是对应于要编码的亮度的亮度代码，以及定义为L = L m PY的第二部分映射，其中Lm是预定参考显示的峰值亮度，并且γ是一个常数，其优选等于 2.4， - 输出具有包括亮度代码的颜色编码的像素矩阵。

2. 发明申请

WO2016110341A1 LUMINANCE CHANGING IMAGE PROCESSING WITH COLOR CONSTANCY 审中-公开
标题翻译：色彩变化图像处理与色彩变化
公开(公告)号：WO2016110341A1
公开(公告)日：2016-07-14
申请号：PCT/EP2015/074501
申请日：2015-10-22
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VAN DER VLEUTEN, Renatus Josephus , STESSEN, Jeroen Hubert Christoffel Jacobus
IPC分类号： H04N1/407 , H04N5/20 , H04N5/57 , G06T5/00 , H04N9/68 , H04N1/60
CPC分类号： G06T5/009 , G06T7/90 , G06T2207/10024 , G06T2207/20208 , H04N1/4072 , H04N1/6027 , H04N5/20 , H04N5/57 , H04N9/68
摘要： For obtaining good quality luminance dynamic range conversion, we describe an image color processing apparatus (200) arranged to transform an input color (R,G,B) of a pixel of an input image (Im_R2) having a first luminance dynamic range into an output color (Rs, Gs, Bs) of a pixel of an output image (Im_res) having a second luminance dynamic range, which first and second dynamic ranges differ in extent by at least a multiplicative factor 1.5, comprising: a maximum calculation unit (201) arranged to calculate the maximum (M) of at least three components of the input color; a brightness mapper (202) arranged to apply a function (F) to the maximum, yielding an output value (F(M)), whereby the function is predetermined having a constraint that the output value for the highest value of the maximum (M) cannot be higher than 1.0; a scaling parameter calculator (203) arranged to calculate a scaling parameter (a) being equal to the output value (F(M)) divided by the maximum (M); and a multiplier (204) arranged to multiply the three color components of the input color (R,G,B) by the scaling parameter (a), yielding the color components of the output color, wherein the color processing apparatus (200) comprises at least one component multiplier (303) arranged to multiply a component (B) of the input color with a weight (wB) being a real number yielding a scaled component (Bw) prior to input of that component in the maximum calculation unit (201).
摘要翻译：为了获得良好的质量亮度动态范围转换，我们描述了一种图像颜色处理装置（200），被配置为将具有第一亮度动态范围的输入图像（Im_R2）的像素的输入颜色（R，G，B）变换为具有第二亮度动态范围的输出图像（Im_res）的像素的输出颜色（Rs，Gs，Bs），其第一和第二动态范围的程度至少乘以乘法因子1.5，包括：最大计算单元 201），被布置为计算输入颜色的至少三个分量的最大值（M）; 布置成将功能（F）施加到最大值的亮度映射器（202），产生输出值（F（M）），由此所述功能被预先确定为具有最大值的最大值的输出值）不能高于1.0; 布置成计算与所述最大值（M）相除的所述输出值（F（M））的缩放参数（a）的缩放参数计算器（203）。以及乘法器（204），被布置为将输入颜色（R，G，B）的三个颜色分量乘以缩放参数（a），产生输出颜色的颜色分量，其中颜色处理设备（200）包括至少一个分量乘法器（303），其被布置成在所述最大计算单元（201）中输入所述分量之前，将所述输入颜色的分量（B）乘以产生缩放分量（Bw）的实数的权重（wB））。

3. 发明申请

WO2016119979A1 SIMPLE BUT VERSATILE DYNAMIC RANGE CODING 审中-公开
标题翻译：简单但动态的动态范围编码
公开(公告)号：WO2016119979A1
公开(公告)日：2016-08-04
申请号：PCT/EP2015/080907
申请日：2015-12-22
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VAN DER VLEUTEN, Renatus Josephus , STESSEN, Jeroen Hubert Christoffel Jacobus , MERTENS, Mark Jozef Willem
IPC分类号： G06T5/00 , H04N5/235 , H04N9/68 , H04N9/69
CPC分类号： G06T5/009 , G06T2207/20092 , G06T2207/20096 , G06T2207/20208 , H04N5/235 , H04N5/2355 , H04N9/69 , H04N19/182 , H04N19/98
摘要： For obtaining an good yet easy to use luminance dynamic range conversion, we describe an image color processing apparatus (200) arranged to transform an input color (R,G,B) of a pixel of an input image (Im_in) having a first luminance dynamic range into an output color (Rs, Gs, Bs) of a pixel of an output image (Im_res) having a second luminance dynamic range, which first and second dynamic ranges differ in extent by at least a multiplicative factor 2, comprising: a maximum determining unit (101) arranged to calculate a maximum (M) of color components of the input color, the color components at least comprising a red, green and blue component; - a uniformization unit (201) arranged to apply a function (FP) to the maximum (M) as input, which function has a logarithmic shape and was predetermined to be of a fixed shape enabling to transform a linear input to a more perceptually uniform output variable (u); a function application unit (203) arranged to receive a functional shape of a function, which was specified previously by a human color grader, and apply the function to the uniform output variable (u), yielding a transformed uniform value (TU); a linearization unit (204) arranged to transform the transformed uniform value (TU) to a linear domain value (LU); a multiplication factor determination unit (205) arranged to determine a multiplication factor (a) being equal to the linear domain value (LU) divided by the maximum (M); and a multiplier (104) arranged to multiply at least three linear color components (R,G,B) by the multiplication factor (a), yielding the output color.
摘要翻译：为了获得良好且易于使用的亮度动态范围转换，我们描述了一种图像颜色处理装置（200），其被设置为将具有第一亮度的输入图像（Im_in）的像素的输入颜色（R，G，B）动态范围变换为具有第二亮度动态范围的输出图像（Im_res）的像素的输出颜色（Rs，Gs，Bs），所述第一和第二动态范围的程度至少乘以乘法因子2，包括：a 最大确定单元（101），被布置为计算输入颜色的颜色分量的最大值（M），所述颜色分量至少包括红色，绿色和蓝色分量; - 将功能（FP）应用于最大（M）作为输入的均匀化单元（201），该功能具有对数形状并被预定为固定形状，使得能够将线性输入变换为更感知均匀输出变量（u）; 功能应用单元（203），其被布置为接收由人类分级器预先指定的功能的功能形状，并将该功能应用于均匀输出变量（u），产生变换均匀值（TU）; 布置成将变换的均匀值（TU）变换为线性域值（LU）的线性化单元（204）; 确定乘法因子（a）等于线性域值（LU）除以最大值（M）的倍增因子确定单元（205）; 以及乘法器（104），其被布置成将至少三个线性颜色分量（R，G，B）乘以乘法因子（a），从而产生输出颜色。

4. 发明申请

WO2015124754A1 HIGH DEFINITION AND HIGH DYNAMIC RANGE CAPABLE VIDEO DECODER 审中-公开
标题翻译：高定义和高动态范围的视频解码器
公开(公告)号：WO2015124754A1
公开(公告)日：2015-08-27
申请号：PCT/EP2015/053669
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 , MOURIK, Johannes Gerardus Rijk van , 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，特别是处理与彩色处理分开的所有消色方向（即，亮度）优化，以及提高重建的HDR图像的质量。这是由具有输入（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的或在视频存储产品上接收的视频信号（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。

5. 发明申请

WO2015124486A1 COLOR SPACE AND DECODER FOR VIDEO 审中-公开
标题翻译：彩色空间和视频解码器
公开(公告)号：WO2015124486A1
公开(公告)日：2015-08-27
申请号：PCT/EP2015/052931
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，具有输入的视频编码器（308））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）具有预定码分配功能（F）的亮度（Y'），其特征在于，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'），其为具有低于低于预定阈值亮度（E'）的亮度的像素颜色产生特定色调的最大可编码饱和度（S_bL） r对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和亮度的颜色的像素的恒定最大可编码饱和度（S_bH）等于或大于预定阈值亮度（E'）。

6. 发明申请

WO2015007510A1 METHOD AND APPARATUS TO CREATE AN EOTF FUNCTION FOR A UNIVERSAL CODE MAPPING FOR AN HDR IMAGE, METHOD AND PROCESS TO USE THESE IMAGES 审中-公开
标题翻译：用于创建用于HDR图像的通用代码映射的全功能的方法和装置，使用这些图像的方法和过程
公开(公告)号：WO2015007510A1
公开(公告)日：2015-01-22
申请号：PCT/EP2014/063890
申请日：2014-07-01
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VAN DER VLEUTEN, Renatus Josephus
IPC分类号： H04N7/12
CPC分类号： H04N5/2355 , G09G2320/0276 , G09G2320/0673 , G09G2340/0428 , G09G2370/04 , G09G2370/12 , H04N5/202 , H04N9/804 , H04N19/186
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), we invented a method of constructing a code allocation function for allocating pixel colors having pixel luminances to codes encoding such pixel luminances, in which the step of determining the code allocation function to be applied to at least one color coordinate of the pixel to obtain a code value, comprises constructing that function out of at least two partial functions, and similar methods at a receiving side, and apparatuses, and signals for communicating between the two sites.
摘要翻译：为了使目前开始出现的高动态范围图像更好地编码，用于全高动态范围技术系统（包含HDR显示，例如在HDR分级应用中），我们发明了一种构建代码分配功能的方法，用于分配具有像素亮度的像素颜色以编码这样的像素亮度的编码，其中确定要应用于像素的至少一个颜色坐标以获得代码值的代码分配功能的步骤包括从至少两个部分功能和类似方法，以及用于在两个站点之间进行通信的装置和信号。

7. 发明申请

WO2014056679A1 LUMINANCE CHANGING IMAGE PROCESSING WITH COLOR CONSTRAINTS 审中-公开
标题翻译：用颜色约束改变图像处理
公开(公告)号：WO2014056679A1
公开(公告)日：2014-04-17
申请号：PCT/EP2013/069203
申请日：2013-09-17
申请人： KONINKLIJKE PHILIPS N.V.
发明人： VAN DER VLEUTEN, Renatus Josephus
IPC分类号： G06T5/00 , H04N1/60 , H04N5/57
CPC分类号： G09G5/02 , G06T3/0056 , G06T5/002 , G09G2320/0271 , G09G2320/066 , G09G2360/16 , H04N1/6027
摘要： To be able to do good color mapping between color encodings for gamuts with considerably different luminance dynamic range while not introducing significant color errors, we describe an image color processing apparatus (201) arranged to transform an input color (L,x,y) of a pixel specified in a color representation corresponding to a first luminance dynamic range into an output color (L*,x,y) of a pixel specified in a color representation corresponding to a second luminance dynamic range, which first and second dynamic ranges differ in extent by at least a multiplicative factor 1.5, comprising a tone mapping deformation unit (203) arranged to determine on the basis of an input tone mapping (301) and a quantity linearly related to the luminance (L) of the input color, an adjusted output luminance (L*, 309), wherein the determining is arranged so that the adjusted output luminance (L*, 309) obtained by applying the input tone mapping to the input luminance (L) of all possible input luminances in its extent of valid values [0,1] giving the highest output (L*,L_HDR), is not higher than a maximum luminance Lmax(x,y) which for the chromatic coordinates (x,y) of the input color is maximally achievable in the gamut corresponding to the second luminance dynamic range for those chromatic coordinates (x,y).
摘要翻译：为了能够在颜色编码与亮度动态范围相当不同的颜色编码之间进行良好的颜色映射，同时不引入显着的颜色误差，我们描述了一种图像颜色处理装置（201），其被设置为将输入颜色（L，x，y）将与第一亮度动态范围对应的颜色表示中指定的像素指定为对应于第二亮度动态范围的颜色表示中指定的像素的输出颜色（L *，x，y），第一和第二动态范围在至少乘以一个乘法因子1.5，包括一个色调映射变形单元（203），它被配置为基于输入色调映射（301）和与输入颜色的亮度（L）线性相关的量来确定，输出亮度（L *，309），其中所述确定被布置成使得通过将所输入的色调映射到所有可能的输入亮度的输入亮度（L）而获得的经调整的输出亮度（L *，309）给出最高输出（L *，L_HDR）的有效值[0,1]程度的肛门不高于输入颜色的色坐标（x，y）的最大亮度Lmax（x，y）在对应于这些色坐标（x，y）的第二亮度动态范围的色域中最大可实现。

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