公开(公告)号：US08953058B2

公开(公告)日：2015-02-10

申请号：US13172717

申请日：2011-06-29

Applicant: Eyal Ben-Eliezer ,  Tomer Schwartz ,  Ehpraim Goldenberg ,  Noy Cohen

Inventor： Eyal Ben-Eliezer ,  Tomer Schwartz ,  Ehpraim Goldenberg ,  Noy Cohen

IPC: H04N5/228 ,  H04N5/232 ,  H04N5/217 ,  H04N9/64 ,  H04N3/14 ,  H04N9/04

CPC classification number: H04N9/045

Abstract: A 9 pixel-by-9 pixel working window slides over an input Bayer image. For each such window, a demosaicing operation is performed. For each such window, corrective processing is performed relative to that window to produce relative differences for that window. For each such window for which relative differences have been produced, those relative differences are regulated. For each window, a maximum is found for that window's regulated relative differences; in one embodiment of the invention, this maximum is used to select which channel is sharp. For each window, the colors in that window are corrected based on the relative difference-based maximum found for that window. For each window, edge oversharpening is softened in order to avoid artifacts in the output image. The result is an output image in which axial chromatic aberrations have been corrected.

Abstract translation: 9像素×9像素工作窗口在输入拜耳图像上滑动。 对于每个这样的窗口，执行去马赛克操作。 对于每个这样的窗口，相对于该窗口执行校正处理以产生该窗口的相对差异。 对于已经产生相对差异的每个这样的窗口，这些相对差异是有规定的。 对于每个窗口，找到该窗口的受限相对差异的最大值; 在本发明的一个实施例中，该最大值用于选择哪个通道是锋利的。 对于每个窗口，该窗口中的颜色将根据该窗口的相对差异最大值进行更正。 对于每个窗口，边缘过敏软化，以避免输出图像中的伪影。 结果是已经校正轴向色差的输出图像。

公开(公告)号：US08577186B1

公开(公告)日：2013-11-05

申请号：US13027175

申请日：2011-02-14

Applicant: Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariv Oz ,  Daniel Cohen ,  Poitr Stec ,  Alexandru Drimbarean

Inventor： Oded Gigushinski ,  Shahar Kovalsky ,  Noy Cohen ,  Yariv Oz ,  Daniel Cohen ,  Poitr Stec ,  Alexandru Drimbarean

IPC: G06K9/40

CPC classification number: G06T3/0093

Abstract: 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, an input pixel from the first version of the image is forward mapped to the second version of the image to determine a set of candidate pixels that may be affected by the input pixel. Each candidate pixel is then backward mapped to the first version of the image to determine whether they are actually affected by the input pixel. For each candidate pixel that is actually affected by the input pixel, a pixel value is determined for that candidate pixel based at least in part upon the pixel value of the input pixel. By using this forward and backward mapping technique, forward interpolation can be implemented quickly and efficiently.

Abstract translation: 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。 根据一个实现，来自图像的第一版本的输入像素被前向映射到图像的第二版本，以确定可能受输入像素影响的一组候选像素。 然后将每个候选像素反向映射到图像的第一版本，以确定它们是否实际上受到输入像素的影响。 对于实际上受输入像素影响的每个候选像素，至少部分地基于输入像素的像素值来为该候选像素确定像素值。 通过使用这种前向和后向映射技术，可以快速有效地实现前向插值。

公开(公告)号：US20120224784A1

公开(公告)日：2012-09-06

申请号：US13038094

申请日：2011-03-01

Applicant: Noy Cohen ,  Jeffrey Danowitz ,  Orly Liba

Inventor： Noy Cohen ,  Jeffrey Danowitz ,  Orly Liba

IPC: G06K9/40

CPC classification number: G06T5/002 ,  G06T2207/20192

Abstract: In accordance with an embodiment of the invention, an anisotropic denoising method is provided that removes sensor noise from a digital image while retaining edges, lines, and details in the image. In one embodiment, the method removes noise from a pixel of interest based on the detected type of image environment in which the pixel is situated. If the pixel is situated in an edge/line image environment, then denoising of the pixel is increased such that relatively stronger denoising of the pixel occurs along the edge or line feature. If the pixel is situated in a detail image environment, then denoising of the pixel is decreased such that relatively less denoising of the pixel occurs so as to preserve the details in the image. In one embodiment, detection of the type of image environment is accomplished by performing simple arithmetic operations using only pixels in a 9 pixel by 9 pixel matrix of pixels in which the pixel of interest is situated. As a result, improved image environment sensitive noise reduction is achieved that requires a relatively low gate count in hardware implementations.

Abstract translation: 根据本发明的实施例，提供了一种各向异性去噪方法，其从数字图像中去除传感器噪声，同时保留图像中的边缘，线和细节。 在一个实施例中，该方法基于所检测到的像素所在的图像环境的类型来从感兴趣的像素中去除噪声。 如果像素位于边缘/线图像环境中，则增加像素的去噪，使得像素的相对较强的去噪沿边缘或线特征发生。 如果像素位于细节图像环境中，则减小像素的去噪，使得像素的去噪相对较少，以便保留图像中的细节。 在一个实施例中，通过仅使用感兴趣像素所在的像素的9像素×9像素矩阵中的像素执行简单的算术运算来实现对图像环境的类型的检测。 结果，实现了改进的图像环境敏感的降噪，其在硬件实现中需要较低的门计数。

公开(公告)号：US20120182448A1

公开(公告)日：2012-07-19

申请号：US13008254

申请日：2011-01-18

Applicant: Noy Cohen ,  Gal Shabtay

Inventor： Noy Cohen ,  Gal Shabtay

IPC: H04N5/232 ,  H04N5/228 ,  H04N5/76

CPC classification number: G02B7/36 ,  H04N5/23212

Abstract: 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.

Abstract translation: 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：US08306348B2

公开(公告)日：2012-11-06

申请号：US11970427

申请日：2008-01-07

Applicant: Noy Cohen ,  Gal Shabtay ,  Ephraim Robert Goldenberg ,  David Mendlovic ,  Ya'Ara David

Inventor： Noy Cohen ,  Gal Shabtay ,  Ephraim Robert Goldenberg ,  David Mendlovic ,  Ya'Ara David

IPC: H04N3/14 ,  H04N5/335 ,  G06K9/40

CPC classification number: G06T5/002 ,  G06T5/003 ,  G06T5/008 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/20192 ,  G06T2207/20201 ,  H04N5/23229 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/3572

Abstract: A method and apparatus for adjusting the effect of applying a kernel to a signal is provided. The adjustment may be based on the magnitude of an effect that a kernel matrix is intended to have on the signal matrix. The adjustments can be based on factors including, but not limited to, a signal-to-noise ratio of the signal data, properties of a device (e.g., lens) used to capture the signal data, or a metric that is derived based on an analysis of the signal data. Processing image data in accordance with an embodiment of the present invention is aimed at regaining lost contrast that may be due to properties of optics that are used to capture the image data.

Abstract translation: 提供了一种用于调整将内核应用于信号的效果的方法和装置。 调整可以基于内核矩阵对信号矩阵具有的影响的大小。 调整可以基于以下因素，包括但不限于信号数据的信噪比，用于捕获信号数据的设备（例如，镜头）的属性，或者基于 对信号数据的分析。 根据本发明的实施例的处理图像数据旨在恢复可能由于用于捕获图像数据的光学器件的特性引起的丢失的对比度。

公开(公告)号：US20120236174A1

公开(公告)日：2012-09-20

申请号：US13051222

申请日：2011-03-18

Applicant: Uri Kinrot ,  Oded Gigushinski ,  Shahar Kovelsky ,  Noy Cohen

Inventor： Uri Kinrot ,  Oded Gigushinski ,  Shahar Kovelsky ,  Noy Cohen

IPC: H04N5/217

CPC classification number: H04N5/2357 ,  H04N5/23296

Abstract: Techniques for detecting and addressing image flicker are disclosed. An imaging device that senses a distorted image and subsequently removes the distortion during processing can utilize an analysis module that obtains statistics indicative of image flicker prior to removing the distortion. An imaging device that features a diode for illuminating a field of view can utilize the diode as a photosensor to determine one or more flicker statistics to determine whether ambient lighting conditions are of the type that cause image flicker.

公开(公告)号：US20110273593A1

公开(公告)日：2011-11-10

申请号：US12774486

申请日：2010-05-05

Applicant: Noy Cohen ,  Eliezer Uri Mendlovic

Inventor： Noy Cohen ,  Eliezer Uri Mendlovic

IPC: H04N5/262 ,  G06K9/34 ,  G06K9/36

CPC classification number: H04N9/045

Abstract: A method and apparatus for performing a digital zoom operation on an input Bayer format image is provided, the output of the digital zoom operation being a second Bayer format image corresponding to the input Bayer format imaged enlarged by a zoom factor.

Abstract translation: 提供了一种用于对输入拜耳格式图像执行数字变焦操作的方法和装置，数字变焦操作的输出是对应于通过缩放因子放大的输入拜耳格式的第二拜尔格式图像。

公开(公告)号：US20080266413A1

公开(公告)日：2008-10-30

申请号：US11970427

申请日：2008-01-07

Applicant: Noy Cohen ,  Gal Shabtay ,  Ephraim Robert Goldenberg ,  David Mendlovic ,  Ya'ara David

Inventor： Noy Cohen ,  Gal Shabtay ,  Ephraim Robert Goldenberg ,  David Mendlovic ,  Ya'ara David

IPC: H04N5/228 ,  G06K9/64

CPC classification number: G06T5/002 ,  G06T5/003 ,  G06T5/008 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/20192 ,  G06T2207/20201 ,  H04N5/23229 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/3572

Abstract: A method and apparatus for adjusting the effect of applying a kernel to a signal is provided. The adjustment may be based on the magnitude of an effect that a kernel matrix is intended to have on the signal matrix. The adjustments can be based on factors including, but not limited to, a signal-to-noise ratio of the signal data, properties of a device (e.g., lens) used to capture the signal data, or a metric that is derived based on an analysis of the signal data. Processing image data in accordance with an embodiment of the present invention is aimed at regaining lost contrast that may be due to properties of optics that are used to capture the image data.

Abstract translation: 提供了一种用于调整将内核应用于信号的效果的方法和装置。 调整可以基于内核矩阵对信号矩阵具有的影响的大小。 调整可以基于以下因素，包括但不限于信号数据的信噪比，用于捕获信号数据的设备（例如，镜头）的属性，或者基于 对信号数据的分析。 根据本发明的实施例的处理图像数据旨在恢复可能由于用于捕获图像数据的光学器件的特性引起的丢失的对比度。

公开(公告)号：US08675115B1

公开(公告)日：2014-03-18

申请号：US13027219

申请日：2011-02-14

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

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

IPC: H04N5/225

CPC classification number: H04N5/3572 ,  H04N5/23296

Abstract: 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.

Abstract translation: 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

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

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

IPC: H04M11/00

CPC classification number: H04N5/272 ,  H04L12/1827 ,  H04N5/23235 ,  H04N7/147 ,  H04N7/15

Abstract: 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.

Abstract translation: 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。