公开(公告)号：US08488031B2

公开(公告)日：2013-07-16

申请号：US13007524

申请日：2011-01-14

申请人： Tomer Schwartz ,  Eyal Ben-Eliezer ,  Orly Liba ,  Noy Cohen

发明人： Tomer Schwartz ,  Eyal Ben-Eliezer ,  Orly Liba ,  Noy Cohen

IPC分类号： H04N5/335

CPC分类号： H04N9/045

摘要： A chromatic noise reduction method is provided for removing chromatic noise from the pixels of a mosaic image. In one implementation, an actual chroma value and a de-noised chroma value are derived for the central pixel of a matrix of pixels. Based at least in part upon these chroma values, a final chroma value is derived for the central pixel. The final chroma value is then used, along with the actual luminance of the central pixel, to derive a final de-noised pixel value for the central pixel. By de-noising the central pixel based on its chroma (which takes into account more than one color) rather than on just the color channel of the central pixel, this method allows the central pixel to be de-noised in a more color-coordinated fashion. As a result, improved chromatic noise reduction is achieved.

摘要翻译： 提供了一种用于从马赛克图像的像素中去除彩色噪声的彩色降噪方法。 在一个实现中，针对像素矩阵的中心像素导出实际色度值和去噪色度值。 至少部分地基于这些色度值，为中心像素导出最终的色度值。 然后使用最终色度值以及中心像素的实际亮度来导出中心像素的最终去噪像素值。 通过基于其色度（其考虑多于一种颜色）而不是仅在中心像素的颜色通道上去除中心像素，该方法允许中心像素在更加颜色协调中被去噪声 时尚。 结果，实现了改善的色噪声降低。

公开(公告)号：US08433187B2

公开(公告)日：2013-04-30

申请号：US13008254

申请日：2011-01-18

申请人： Noy Cohen ,  Gal Shabtay

发明人： Noy Cohen ,  Gal Shabtay

IPC分类号： G03B13/36 ,  G01C3/08

CPC分类号： G02B7/36 ,  H04N5/23212

摘要： An electronic device including a camera adapted to capture images is provided. The camera includes a lens having a first focusing state and a second focusing state; an image sensor adapted to capture a first image of an object in the first focusing state and a second image of the object in the second focusing state. The electronic device further includes a memory configured to store instructions; and a processor coupled to the memory and the camera, wherein the processor is adapted to determine a distance to the object based on the first image and the second image. A lens system including an actuator to modify a configuration of the lens system is also provided, having a first and second focusing state; a memory; and a lookup table to estimate a distance from the lens system to an object.

摘要翻译： 提供一种包括适于拍摄图像的照相机的电子设备。 相机包括具有第一聚焦状态和第二聚焦状态的透镜; 图像传感器，其适于捕获处于第一聚焦状态的对象的第一图像和处于第二聚焦状态的对象的第二图像。 电子设备还包括被配置为存储指令的存储器; 以及耦合到所述存储器和所述相机的处理器，其中所述处理器适于基于所述第一图像和所述第二图像来确定到所述对象的距离。 还提供了一种包括用于改变透镜系统的构造的致动器的透镜系统，具有第一和第二聚焦状态; 记忆 以及用于估计从透镜系统到物体的距离的查找表。

公开(公告)号：US20120099005A1

公开(公告)日：2012-04-26

申请号：US13264251

申请日：2010-04-09

申请人： Eran Kali ,  Yariv Oz ,  Pichas Dahan ,  Shahar Kovalsky ,  Oded Gigushinski ,  Noy Cohen ,  Ephraim Goldenberg

发明人： Eran Kali ,  Yariv Oz ,  Pichas Dahan ,  Shahar Kovalsky ,  Oded Gigushinski ,  Noy Cohen ,  Ephraim Goldenberg

IPC分类号： H04N5/262 ,  H04N5/228

CPC分类号： H04N5/3572 ,  H04N5/3456

摘要： An optical system can provides a distorted image of an object within a field of view onto sensing pixels of an image capturing device. The optical system can expand the image in a center of the field of view and compress the image in a periphery or introduce other distortion. The distortion intentionally introduced by the optical system is corrected when the sensing pixels are read to remove some or all of the distortion and thereby produce a “rectified” image. The pixels can be read along a trajectory corresponding to a curvature map of the distorted image to rectify distortions during pixel read out, rather than waiting until all or substantially all of the sensing pixels have been read. Sensor logic and/or algorithms can be used in removing the distortion.

摘要翻译： 光学系统可以将视场内的对象的失真图像提供给图像捕获装置的感测像素。 光学系统可以在视野的中心扩大图像，并在周边压缩图像或引入其他失真。 当读取感测像素以去除一些或全部失真并由此产生“整流”图像时，校正由光学系统故意引入的失真。 可以沿着与失真图像的曲率图对应的轨迹读取像素，以纠正像素读出期间的失真，而不是等待直到所有或基本上全部的感测像素已被读取。 传感器逻辑和/或算法可用于消除失真。

公开(公告)号：US20120093419A1

公开(公告)日：2012-04-19

申请号：US12905367

申请日：2010-10-15

申请人： Orly Liba ,  Noy Cohen ,  Jeffrey Danowitz

发明人： Orly Liba ,  Noy Cohen ,  Jeffrey Danowitz

IPC分类号： G06K9/48

CPC分类号： G06T7/44

摘要： In an embodiment, a device comprises a plurality of elements configured to apply a filter to multiple groups of pixels in a neighborhood of pixels surrounding a particular pixel to generate a matrix of filtered values; compute, from the matrix of filtered values, a first set of gradients along a first direction and a second set of gradients along a second and different direction; determine how many directional changes are experienced by the gradients in the first set of gradients and the gradients in the second set of gradients; compute a first weighted value for a first direction and a second weighted value for a second direction; and based, at least in part, upon the first and second weighted values, compute an overall texture characterization value for the particular pixel, wherein the overall texture characterization value indicates a type of image environment in which the particular pixel is located.

摘要翻译： 在一个实施例中，设备包括多个元件，其被配置为将滤波器应用于围绕特定像素的像素周围的多个像素组，以生成滤波值的矩阵; 从滤波值的矩阵中计算沿着第一方向的第一梯度梯度和沿着第二方向和不同方向的第二梯度集合; 确定第一组梯度中的梯度和第二组梯度中的梯度经历了多少方向变化; 计算第一方向的第一加权值和第二方向的第二加权值; 并且至少部分地基于第一和第二加权值来计算特定像素的总体纹理表征值，其中整体纹理表征值指示特定像素所在的图像环境的类型。

公开(公告)号：US20110090240A1

公开(公告)日：2011-04-21

申请号：US12996284

申请日：2009-06-05

申请人： Noy Cohen

发明人： Noy Cohen

IPC分类号： G06T5/00

CPC分类号： G06T5/20 ,  G06T5/002 ,  G06T2207/10024

摘要： A system and method for reducing noise in images is disclosed. The present invention reduces noise and preserves contrast of an image to be displayed, the image having pixels, by (1) comparing a value of a first pixel to values of a set of other N pixels; (2) comparing values of pixels neighboring the first pixel to values of further pixels neighboring the set of other pixels; (3) determining, for each pixel in the set of other pixels, a weight based on results of steps (1) and (2); (4) calculating a de-noised pixel value based on the weights of each pixel in the set of other pixels; and (5) replacing the value of the first pixel with the de-noised pixel value.

摘要翻译： 公开了一种降低图像噪声的系统和方法。 本发明通过（1）将第一像素的值与一组其他N个像素的值相比较来减少噪声并保持要显示的图像的对比度，具有像素的图像; （2）将与第一像素相邻的像素的值与其余像素的集合相邻的另外的像素的值进行比较; （3）针对所述一组其他像素中的每个像素，确定基于步骤（1）和（2）的结果的权重; （4）基于所述一组其他像素中的每个像素的权重来计算去噪像素值; 和（5）用去噪像素值代替第一像素的值。

公开(公告)号：US08675115B1

公开(公告)日：2014-03-18

申请号：US13027219

申请日：2011-02-14

申请人： Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariz Oz ,  Daniel Cohen ,  Avi Amramy

发明人： Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariz Oz ,  Daniel Cohen ,  Avi Amramy

IPC分类号： H04N5/225

CPC分类号： H04N5/3572 ,  H04N5/23296

摘要： A forward interpolation approach is disclosed for enabling a second version of an image to be constructed from a first version of the image. According to one implementation of the forward interpolation approach, pixels from the first version of the image are processed one row at a time. As the pixels in a row of pixels in the first version of the image are processed, they may cause pixel values on different rows of the second version of the image to be determined. Since the pixel values of the second version of the image are stored in output line buffers, this means that, at any particular point in time, there may be multiple partially filled output line buffers. It has been observed that the forward interpolation approach enables significant benefits (such as reduced storage requirements and reduced internal bandwidth and processing) to be achieved over a backward interpolation approach.

摘要翻译： 公开了一种用于使得能够从图像的第一版本构建图像的第二版本的前向内插方法。 根据前向内插方法的一个实施方式，来自图像的第一版本的像素一次被一行地处理。 当图像的第一版本中的像素行中的像素被处理时，它们可以导致图像的第二版本的不同行上的像素值被确定。 由于图像的第二版本的像素值被存储在输出行缓冲器中，这意味着在任何特定的时间点，可能存在多个部分填充的输出行缓冲器。 已经观察到，正向插值方法实现了通过反向插值方法实现的显着益处（例如减少的存储要求和减少的内部带宽和处理）。

公开(公告)号：US08355039B2

公开(公告)日：2013-01-15

申请号：US12883192

申请日：2010-09-16

申请人： Guy Michrowski ,  Gal Shabtay ,  Noy Cohen ,  Eyal Ben-Eliezer ,  Ephraim Goldenberg

发明人： Guy Michrowski ,  Gal Shabtay ,  Noy Cohen ,  Eyal Ben-Eliezer ,  Ephraim Goldenberg

IPC分类号： H04M11/00

CPC分类号： H04N5/272 ,  H04L12/1827 ,  H04N5/23235 ,  H04N7/147 ,  H04N7/15

摘要： Different distances of two or more objects in a scene being captured in a video conference are determined by determining a sharpest of two or more color channels and calculating distances based on the determining of the sharpest of the two or more color channels. At least one of the objects is identified as a foreground object or a background object, or one or more of each, based on the determining of the different distances. The technique involves blurring or otherwise rendering unclear at least one background object or one or more portions of the scene other than the at least one foreground object, or combinations thereof, also based on the determining of distances.

摘要翻译： 通过确定最清晰的两个或更多个颜色通道并基于确定两个或更多个颜色通道中最清晰的距离来确定在视频会议中捕获的场景中的两个或更多个对象的不同距离。 基于确定不同的距离，将至少一个对象识别为前景对象或背景对象，或每个对象中的一个或多个。 该技术还基于距离的确定来模糊或以其他方式渲染不清楚的至少一个背景物体或场景的一个或多个部分，而不是至少一个前景物体，或其组合。

公开(公告)号：US08340462B1

公开(公告)日：2012-12-25

申请号：US13027203

申请日：2011-02-14

申请人： Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariv Oz ,  Poitr Stec ,  Alexandru Drimbarean ,  Corneliu Zaharia ,  Mihai Constantine Munteanu

发明人： Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariv Oz ,  Poitr Stec ,  Alexandru Drimbarean ,  Corneliu Zaharia ,  Mihai Constantine Munteanu

IPC分类号： G06K9/40

CPC分类号： G06T3/0093 ,  H04N5/23212

摘要： A forward interpolation approach is disclosed for enabling a second version of an image to be constructed from a first version of the image. According to one implementation, pixels from the first version of the image are mapped to pixels in the second version of the image, and pixel values are determined for the corresponding pixels in the second version of the image. In one implementation, the pixel mapping is performed using a lookup table and linear approximation. Performing the pixel mapping in this manner enables computations to be simplified and cost and gate count to be reduced.

摘要翻译： 公开了一种用于使得能够从图像的第一版本构建图像的第二版本的前向内插方法。 根据一个实施方式，来自图像的第一版本的像素被映射到图像的第二版本中的像素，并且为图像的第二版本中的相应像素确定像素值。 在一个实现中，使用查找表和线性近似来执行像素映射。 以这种方式执行像素映射使得能够简化计算，并降低成本和门数。

公开(公告)号：US20120182454A1

公开(公告)日：2012-07-19

申请号：US13007524

申请日：2011-01-14

申请人： Tomer Schwartz ,  Eyal Ben-Eliezer ,  Orly Liba ,  Noy Cohen

发明人： Tomer Schwartz ,  Eyal Ben-Eliezer ,  Orly Liba ,  Noy Cohen

IPC分类号： H04N5/335

CPC分类号： H04N9/045

摘要： A chromatic noise reduction method is provided for removing chromatic noise from the pixels of a mosaic image. In one implementation, an actual chroma value and a de-noised chroma value are derived for the central pixel of a matrix of pixels. Based at least in part upon these chroma values, a final chroma value is derived for the central pixel. The final chroma value is then used, along with the actual luminance of the central pixel, to derive a final de-noised pixel value for the central pixel. By de-noising the central pixel based on its chroma (which takes into account more than one color) rather than on just the color channel of the central pixel, this method allows the central pixel to be de-noised in a more color-coordinated fashion. As a result, improved chromatic noise reduction is achieved.

摘要翻译： 提供了一种用于从马赛克图像的像素中去除彩色噪声的彩色降噪方法。 在一个实现中，针对像素矩阵的中心像素导出实际色度值和去噪色度值。 至少部分地基于这些色度值，为中心像素导出最终的色度值。 然后使用最终色度值以及中心像素的实际亮度来导出中心像素的最终去噪像素值。 通过基于其色度（其考虑多于一种颜色）而不是仅在中心像素的颜色通道上去除中心像素，该方法允许中心像素在更加颜色协调中去噪声 时尚。 结果，实现了改善的色噪声降低。

公开(公告)号：US20120007940A1

公开(公告)日：2012-01-12

申请号：US12883192

申请日：2010-09-16

申请人： Guy Michrowski ,  Gal Shabtay ,  Noy Cohen ,  Eyal Ben-Eliezer ,  Ephraim Goldenberg

发明人： Guy Michrowski ,  Gal Shabtay ,  Noy Cohen ,  Eyal Ben-Eliezer ,  Ephraim Goldenberg

IPC分类号： H04N7/15

CPC分类号： H04N5/272 ,  H04L12/1827 ,  H04N5/23235 ,  H04N7/147 ,  H04N7/15

摘要： Different distances of two or more objects in a scene being captured in a video conference are determined by determining a sharpest of two or more color channels and calculating distances based on the determining of the sharpest of the two or more color channels. At least one of the objects is identified as a foreground object or a background object, or one or more of each, based on the determining of the different distances. The technique involves blurring or otherwise rendering unclear at least one background object or one or more portions of the scene other than the at least one foreground object, or combinations thereof, also based on the determining of distances.

摘要翻译： 通过确定最清晰的两个或更多个颜色通道并基于确定两个或更多个颜色通道中最清晰的距离来确定在视频会议中捕获的场景中的两个或更多个对象的不同距离。 基于确定不同的距离，将至少一个对象识别为前景对象或背景对象，或每个对象中的一个或多个。 该技术还基于距离的确定来模糊或以其他方式渲染不清楚的至少一个背景物体或场景的一个或多个部分，而不是至少一个前景物体，或其组合。