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1. 发明申请

US20050253854A1 Method and system for performing computer graphic simulation of a fluid using target-driven control 失效
标题翻译：使用目标驱动控制对流体进行计算机图形仿真的方法和系统
公开(公告)号：US20050253854A1
公开(公告)日：2005-11-17
申请号：US11128227
申请日：2005-05-13
申请人： Daniel Lischinski , Raanan Fattal
发明人： Daniel Lischinski , Raanan Fattal
IPC分类号： G06T13/00 , G06T15/70
CPC分类号： G06T13/60 , G06T2210/24
摘要： Method and system for efficiently controlling animated smoke which utilizes a sequence of target smoke states to generate a smoke simulation in which the smoke is driven towards each of these targets in turn, while exhibiting natural-looking interesting smoke-like behavior. This control is made possible by two new terms added to standard flow equations: (i) a driving force term that causes the fluid to carry the smoke towards a particular target, and (ii) a smoke gathering term that prevents the smoke from diffusing too much. These terms are explicitly defined by the instantaneous state of the system at each simulation time step. Thus, no expensive optimization is required, allowing complex smoke animations to be generated with very little additional cost compared to ordinary flow simulations. The invention is also applicable to animation of other fluid flow phenomena.
摘要翻译：用于有效地控制动画烟雾的方法和系统，其利用一系列目标烟雾状态来产生烟雾模拟，其中烟雾依次驱动到这些目标中的每一个，同时呈现自然的有趣的烟雾状态。这种控制是通过添加到标准流量方程中的两个新项来实现的：（i）导致流体将烟雾传送到特定目标的驱动力项，以及（ii）防止烟雾扩散的烟雾聚集术语许多。这些术语由每个仿真时间步骤中系统的瞬时状态明确定义。因此，不需要昂贵的优化，与常规流模拟相比，可以以非常少的附加成本产生复杂的烟雾动画。本发明也适用于其他流体流动现象的动画。

2. 发明授权

US08350933B2 Method, apparatus and computer program product for single image de-hazing 有权
标题翻译：用于单图像去雾的方法，设备和计算机程序产品
公开(公告)号：US08350933B2
公开(公告)日：2013-01-08
申请号：US12756449
申请日：2010-04-08
申请人： Raanan Fattal
发明人： Raanan Fattal
IPC分类号： H04N5/217
CPC分类号： H04N5/217 , G06T5/003 , G06T2207/10032
摘要： A method, apparatus and computer program product are provided for recovering a haze-free image given a single input image. The method may include receiving a single input image I, wherein the input image is made up of a plurality of pixels. A surface radiance vector J of the input image I may be modeled as a product of a surface albedo coefficient R and a shading factor l. The method may further include determining, for each of the plurality of pixels, a value of a transmission t of the pixel, such that a covariance CΩ between the transmission t and the shading factor l is minimized, and recovering the surface radiance vector J based at least in part on the determined value of the transmission t for each pixel.
摘要翻译：提供了一种方法，装置和计算机程序产品，用于恢复给定单个输入图像的无雾图像。该方法可以包括接收单个输入图像I，其中输入图像由多个像素组成。输入图像I的表面辐射矢量J可以被建模为表面反照率系数R和遮蔽因子l的乘积。该方法还可以包括为多个像素中的每一个确定像素的透射值t，使得协方差C＆OHgr; 至少部分地基于所确定的每个像素的传输值t来恢复传输t和遮蔽因子l之间的距离，并恢复表面辐射向量J。

3. 发明授权

US09361663B2 Applying rapid numerical approximation of convolutions with filters for image processing purposes 有权
标题翻译：应用快速数值近似的滤波器进行图像处理
公开(公告)号：US09361663B2
公开(公告)日：2016-06-07
申请号：US14128966
申请日：2012-06-27
申请人： Daniel Lischinski , Raanan Fattal , Zeev Farbman
发明人： Daniel Lischinski , Raanan Fattal , Zeev Farbman
IPC分类号： G06K9/64 , G06T3/40 , G06F17/15 , G06T5/20
CPC分类号： G06T3/4084 , G06F17/15 , G06T5/20
摘要： A computer implemented method for applying a numerical approximation of a convolution of image I as represented by hierarchical signals al of level l with filter f, said method including the steps of: generating a forward transformation by applying a convolution between al and kernel h1 for each level of hierarchy l and by down-sampling the result of convolved al and h1; generating a backward transformation by applying, for each level of hierarchy l, a convolution between kernel h2 and an up-sampled forward transformation and combining the result with a convolution of al with kernel g; and combining the forward transformation with the backward transformation, to yield â0 being an approximation of a convolution between a and f, wherein kernels h1, h1, and g are optimized kernels of filter f.
摘要翻译：一种计算机实现的方法，用于应用图像I的卷积的数值近似，其由级别l的分层信号a1表示为具有滤波器f，所述方法包括以下步骤：通过对于每个，通过应用al和内核h1之间的卷积来生成正向变换层次l的层次，并通过对采用卷积al和h1的结果进行下采样; 通过对每个级别l应用内核h2和上采样正向变换之间的卷积，并将结果与al与卷积g相结合，产生反向变换; 并将前向变换与反向变换相结合，得到α是a和f之间的卷积近似值，其中，内核h1，h1和g是滤波器f的优化内核。

4. 发明申请

US20120328210A1 METHOD AND SYSTEM FOR GENERATING AN OUTPUT IMAGE OF INCREASED PIXEL RESOLUTION FROM AN INPUT IMAGE 有权
标题翻译：用于从输入图像生成增加像素分辨率的输出图像的方法和系统
公开(公告)号：US20120328210A1
公开(公告)日：2012-12-27
申请号：US13575543
申请日：2011-01-27
申请人： Raanan Fattal , Gilad Freedman
发明人： Raanan Fattal , Gilad Freedman
IPC分类号： G06K9/40
CPC分类号： G06T3/403
摘要： A method and system (30) generates an output image (21) of increased pixel resolution from an input image (20), which is non-dyadically upscaled to generate an upscaled image (22) having more pixels than the input image and is low-pass filtered to generate a smoothed image (23). A high detail image (24) is generated by subtraction and for each pixel in the upscaled image, a patch (25) containing the pixel is identified. A best-fit patch (26) within a localized region (27) of the smoothed image is found by searching in the smoothed image in close proximity to a mapped location of the patch in the upscaled image. Each pixel in the patch of the upscaled image is corrected by uniquely adding the value of the corresponding pixel in an equivalent patch of the high detail image corresponding to the best-fit patch, and the corrected upscaled image is stored for further processing.
摘要翻译：方法和系统（30）从输入图像（20）生成增加的像素分辨率的输出图像（21），该输入图像是非二进制放大的，以产生具有比输入图像更多的像素的放大图像（22），并且低通过过滤以产生平滑图像（23）。通过减法产生高细节图像（24），并且对于放大图像中的每个像素，识别包含像素的贴片（25）。通过在平滑图像中紧邻在放大图像中的贴片的映射位置进行搜索，找到平滑图像的局部区域（27）内的最佳拟合贴片（26）。通过在对应于最佳拟合片的高细节图像的等效片中唯一地添加相应像素的值来校正放大图像的片段中的每个像素，并且存储校正的放大的图像用于进一步处理。

5. 发明申请

US20100259651A1 METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR SINGLE IMAGE DE-HAZING 有权
标题翻译：方法，装置和计算机程序产品，用于单一图像识别
公开(公告)号：US20100259651A1
公开(公告)日：2010-10-14
申请号：US12756449
申请日：2010-04-08
申请人： Raanan Fattal
发明人： Raanan Fattal
IPC分类号： H04N5/217
CPC分类号： H04N5/217 , G06T5/003 , G06T2207/10032
摘要： A method, apparatus and computer program product are provided for recovering a haze-free image given a single input image. The method may include receiving a single input image I, wherein the input image is made up of a plurality of pixels. A surface radiance vector J of the input image I may be modeled as a product of a surface albedo coefficient R and a shading factor l. The method may further include determining, for each of the plurality of pixels, a value of a transmission t of the pixel, such that a covariance CΩ between the transmission t and the shading factor l is minimized, and recovering the surface radiance vector J based at least in part on the determined value of the transmission t for each pixel.
摘要翻译：提供了一种方法，装置和计算机程序产品，用于恢复给定单个输入图像的无雾图像。该方法可以包括接收单个输入图像I，其中输入图像由多个像素组成。输入图像I的表面辐射矢量J可以被建模为表面反照率系数R和遮蔽因子l的乘积。该方法还可以包括为多个像素中的每一个确定像素的透射值t，使得协方差C＆OHgr; 至少部分地基于所确定的每个像素的传输值t来恢复传输t和遮蔽因子l之间的距离，并恢复表面辐射向量J。

6. 发明申请

US20100183222A1 System and method for edge-enhancement of digital images using wavelets 有权
标题翻译：使用小波进行数字图像边缘增强的系统和方法
公开(公告)号：US20100183222A1
公开(公告)日：2010-07-22
申请号：US12657503
申请日：2010-01-21
申请人： Raanan Fattal
发明人： Raanan Fattal
IPC分类号： G06K9/00
CPC分类号： G06K9/527 , G06T5/001 , G06T5/10 , G06T2207/20012 , G06T2207/20016 , G06T2207/20064 , G06T2207/20192
摘要： Systems, methods, and techniques are provided for performing any one or more of edge-preserving image sharpening, edge-preserving image smoothing, edge-preserving image dynamic range compression, and edge-aware data interpolation on digital images, wherein a pixel prediction module is adapted for coupling to a memory storing pixel data representative of a digital image and extracts from the image predicted pixel values using robust smoothing. The predicted pixels are stored in a memory and respective detail values equal to the difference between respective original and predicted values are computed. A pixel update module computes approximation values by averaging the respective detail values with original pixel values using robust smoothing, and stores the approximation values for subsequent rendering. The prediction and update modules run recursively and a manipulation module increases or decreases the detail values and the approximation values depending on their magnitude and depending on the kind of edge enhancement required.
摘要翻译：提供了系统，方法和技术，用于执行数字图像上的边缘保留图像锐化，边缘保留图像平滑，边缘保留图像动态范围压缩和边缘感知数据插值中的任何一个或多个，其中像素预测模块适于耦合到存储表示数字图像的像素数据的存储器，并且使用鲁棒平滑从图像预测像素值中提取。将预测像素存储在存储器中，并且计算等于相应的原始值和预测值之间的差的相应细节值。像素更新模块通过使用鲁棒平滑对具有原始像素值的各个细节值进行平均来计算近似值，并且存储用于后续渲染的近似值。预测和更新模块递归运行，操作模块根据其大小和根据所需的边缘增强的种类增加或减少细节值和近似值。

7. 发明授权

US07479963B2 Method and system for performing computer graphic simulation of a fluid using target-driven control 失效
标题翻译：使用目标驱动控制对流体进行计算机图形仿真的方法和系统
公开(公告)号：US07479963B2
公开(公告)日：2009-01-20
申请号：US11128227
申请日：2005-05-13
申请人： Daniel Lischinski , Raanan Fattal
发明人： Daniel Lischinski , Raanan Fattal
IPC分类号： G06T15/00
CPC分类号： G06T13/60 , G06T2210/24
摘要： Method and system for efficiently controlling animated smoke which utilizes a sequence of target smoke states to generate a smoke simulation in which the smoke is driven towards each of these targets in turn, while exhibiting natural-looking interesting smoke-like behavior. This control is made possible by two new terms added to standard flow equations: (i) a driving force term that causes the fluid to carry the smoke towards a particular target, and (ii) a smoke gathering term that prevents the smoke from diffusing too much. These terms are explicitly defined by the instantaneous state of the system at each simulation time step. Thus, no expensive optimization is required, allowing complex smoke animations to be generated with very little additional cost compared to ordinary flow simulations. The invention is also applicable to animation of other fluid flow phenomena.
摘要翻译：用于有效地控制动画烟雾的方法和系统，其利用一系列目标烟雾状态来产生烟雾模拟，其中烟雾依次驱动到这些目标中的每一个，同时呈现自然的有趣的烟雾状态。这种控制是通过添加到标准流量方程中的两个新项来实现的：（i）导致流体将烟雾传送到特定目标的驱动力项，以及（ii）防止烟雾扩散的烟雾聚集术语许多。这些术语由每个仿真时间步骤中系统的瞬时状态明确定义。因此，不需要昂贵的优化，与常规流模拟相比，可以以非常少的附加成本产生复杂的烟雾动画。本发明也适用于其他流体流动现象的动画。

8. 发明授权

US07305144B2 System and method for compressing the dynamic range of an image 有权
标题翻译：用于压缩图像的动态范围的系统和方法
公开(公告)号：US07305144B2
公开(公告)日：2007-12-04
申请号：US10813691
申请日：2003-01-15
申请人： Raanan Fattal , Daniel Lischinski , Michael Werman
发明人： Raanan Fattal , Daniel Lischinski , Michael Werman
IPC分类号： G06K9/40
CPC分类号： G06T5/009 , G06T5/40 , G06T5/50 , H04N1/4072 , H04N19/117 , H04N19/14 , H04N19/172 , H04N19/33
摘要： A gradient domain compression system generates, from an input image having a high luminance dynamic range, an output image having a lower luminance dynamic range. The system comprises a gradient image generator module, a gradient compression module, and an output image generator module. The gradient image generator module is configured to generate, from the input image, a gradient image representing, for respective points of the input image, gradient values in the luminance of the input image. The gradient compression module is configured to receive the gradient image and generate a compressed range gradient image in which the range of gradient values are compressed. The output image generator module is configured to receive the compressed range gradient image and to generate therefrom an image, the image generated by the output image generator module comprising the output image.
摘要翻译：梯度域压缩系统从具有高亮度动态范围的输入图像生成具有较低亮度动态范围的输出图像。该系统包括梯度图像发生器模块，梯度压缩模块和输出图像发生器模块。梯度图像生成器模块被配置为从输入图像生成对于输入图像的各个点表示输入图像的亮度中的梯度值的梯度图像。梯度压缩模块被配置为接收梯度图像并生成其中梯度值的范围被压缩的压缩范围梯度图像。输出图像生成器模块被配置为接收压缩范围梯度图像并从其生成图像，由包括输出图像的输出图像生成器模块生成的图像。

9. 发明申请

US20050254722A1 System and method for compressing the dynamic range of an image 有权
标题翻译：用于压缩图像的动态范围的系统和方法
公开(公告)号：US20050254722A1
公开(公告)日：2005-11-17
申请号：US10813691
申请日：2003-01-15
申请人： Raanan Fattal , Dani Lischinski , Michael Werman
发明人： Raanan Fattal , Dani Lischinski , Michael Werman
IPC分类号： G06K9/00 , G06K9/40 , G06T5/40 , G06T5/50 , G06T9/00 , H04N7/26
CPC分类号： G06T5/009 , G06T5/40 , G06T5/50 , H04N1/4072 , H04N19/117 , H04N19/14 , H04N19/172 , H04N19/33
摘要： A gradient domain compression system generates, from an input image having a high luminance dynamic range, an output image having a lower luminance dynamic range. The system comprises a gradient image generator module, a gradient compression module, and an output image generator module. The gradient image generator module is configured to generate, from the input image, a gradient image representing, for respective points of the input image, gradient values in the luminance of the input image. The gradient compression module is configured to receive the gradient image and generate a compressed range gradient image in which the range of gradient values are compressed. The output image generator module is configured to receive the compressed range gradient image and to generate therefrom an image, the image generated by the output image generator module comprising the output image.
摘要翻译：梯度域压缩系统从具有高亮度动态范围的输入图像生成具有较低亮度动态范围的输出图像。该系统包括梯度图像生成器模块，梯度压缩模块和输出图像生成器模块。梯度图像生成器模块被配置为从输入图像生成对于输入图像的各个点表示输入图像的亮度中的梯度值的梯度图像。梯度压缩模块被配置为接收梯度图像并生成其中梯度值的范围被压缩的压缩范围梯度图像。输出图像生成器模块被配置为接收压缩范围梯度图像并从其生成图像，由包括输出图像的输出图像生成器模块生成的图像。

10. 发明授权

US08867858B2 Method and system for generating an output image of increased pixel resolution from an input image 有权
标题翻译：用于从输入图像生成增加的像素分辨率的输出图像的方法和系统
公开(公告)号：US08867858B2
公开(公告)日：2014-10-21
申请号：US13575543
申请日：2011-01-27
申请人： Raanan Fattal , Gilad Freedman
发明人： Raanan Fattal , Gilad Freedman
IPC分类号： G06K9/40 , G06K9/32 , G06T3/40
CPC分类号： G06T3/403
摘要： A method and system (30) generates an output image (21) of increased pixel resolution from an input image (20), which is non-dyadically upscaled to generate an upscaled image (22) having more pixels than the input image and is low-pass filtered to generate a smoothed image (23). A high detail image (24) is generated by subtraction and for each pixel in the upscaled image, a patch (25) containing the pixel is identified. A best-fit patch (26) within a localized region (27) of the smoothed image is found by searching in the smoothed image in close proximity to a mapped location of the patch in the upscaled image. Each pixel in the patch of the upscaled image is corrected by uniquely adding the value of the corresponding pixel in an equivalent patch of the high detail image corresponding to the best-fit patch, and the corrected upscaled image is stored for further processing.
摘要翻译：方法和系统（30）从输入图像（20）生成增加的像素分辨率的输出图像（21），该输入图像是非二进制放大的，以产生具有比输入图像更多的像素的放大图像（22），并且低通过过滤以产生平滑图像（23）。通过减法产生高细节图像（24），并且对于放大图像中的每个像素，识别包含像素的贴片（25）。通过在平滑图像中紧邻在放大图像中的贴片的映射位置进行搜索，找到平滑图像的局部区域（27）内的最佳拟合贴片（26）。通过在对应于最佳拟合片的高细节图像的等效片中唯一地添加相应像素的值来校正放大图像的片段中的每个像素，并且存储校正的放大的图像用于进一步处理。

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