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1. 发明授权

US09323979B2 Face recognition performance using additional image features 有权
公开(公告)号：US09323979B2
公开(公告)日：2016-04-26
申请号：US14562366
申请日：2014-12-05
申请人： DigitalOptics Corporation Europe Limited
发明人： Petronel Bigioi , Gabriel Costache , Alexandru Drimbarean , Peter Corcoran
IPC分类号： G06K9/00
CPC分类号： G06K9/00295 , G06K9/00248 , G06K9/00261 , G06K9/4604
摘要： A technique is provided for recognizing faces in an image stream using a digital image acquisition device. A first acquired image is received from an image stream. A first face region is detected within the first acquired image having a given size and a respective location within the first acquired image. First faceprint data uniquely identifying the first face region are extracted along with first peripheral region data around the first face region. The first faceprint and peripheral region data are stored, and the first peripheral region data are associated with the first face region. The first face region is tracked until a face lock is lost. A second face region is detected within a second acquired image from the image stream. Second peripheral region data around the second face region are extracted. The second face region is identified upon matching the first and second peripheral region data.

2. 发明授权

US08928730B2 Method and system for correcting a distorted input image 有权
标题翻译：用于校正失真输入图像的方法和系统
公开(公告)号：US08928730B2
公开(公告)日：2015-01-06
申请号：US13541650
申请日：2012-07-03
申请人： Piotr Stec , Alexei Pososin , Mihai Munteanu , Corneliu Zaharia
发明人： Piotr Stec , Alexei Pososin , Mihai Munteanu , Corneliu Zaharia
IPC分类号： G06T5/00 , H04N5/225
CPC分类号： G06T5/001 , G06T5/006 , G06T2207/20021 , G06T2207/20172 , H04N5/23229
摘要： A method for correcting a distorted input image includes determining a local region of an image to be displayed and dividing the region into an array of rectangular tiles, each tile corresponding to a distorted tile with a non-rectangular boundary within the input image. For each tile of the local region, maximum and minimum memory address locations of successive rows of the input image sufficient to span the boundary of the distorted tile are determined. Successive rows of the distorted input from between the maximum and minimum addresses are read. Distortion of the non-rectangular portion of the distorted input image is corrected to provide a tile of a corrected output image which is stored.
摘要翻译：用于校正失真的输入图像的方法包括确定要显示的图像的局部区域，并将该区域划分为矩形瓦片的阵列，每个瓦片对应于输入图像内具有非矩形边界的失真瓦片。对于局部区域的每个瓦片，确定足够跨越失真瓦片的边界的输入图像的连续行的最大和最小存储器地址位置。读取从最大和最小地址之间的失真输入的连续行。纠正失真输入图像的非矩形部分的失真以提供存储的校正输出图像的图块。

3. 发明授权

US08890983B2 Tone mapping for low-light video frame enhancement 有权
公开(公告)号：US08890983B2
公开(公告)日：2014-11-18
申请号：US14012806
申请日：2013-08-28
申请人： DigitalOptics Corporation Europe Limited
发明人： Ruxandra Vranceanu
IPC分类号： H04N9/64 , G06T5/50 , H04N9/68 , G06T5/00
CPC分类号： H04N9/646 , G06T5/003 , G06T5/009 , G06T5/40 , G06T5/50 , G06T2207/10016 , G06T2207/10024 , G06T2207/10144 , G06T2207/20008 , H04N5/235 , H04N5/2355 , H04N9/045 , H04N9/68
摘要： A technique is provided for generating sharp, well-exposed, color images from low-light images. A series of under-exposed images is acquired. A mean image is computed and a sum image is generated each based on the series of under-exposed images. Chrominance variables of pixels of the mean image are mapped to chrominance variables of pixels of the sum image. Chrominance values of pixels within the series of under-exposed images are replaced with chrominance values of the sum image. A set of sharp, well-exposed, color images is generated based on the series of under-exposed images with replaced chrominance values.

4. 发明授权

US08879869B2 Image defect map creation using batches of digital images 有权
标题翻译：图像缺陷图创建使用批次的数字图像
公开(公告)号：US08879869B2
公开(公告)日：2014-11-04
申请号：US13748584
申请日：2013-01-23
申请人： DigitalOptics Corporation Europe Limited
发明人： Marta Zamfir , Eran Steinberg , Yury Prilutsky , Peter Corcoran , Petronel Bigioi , Adrian Zamfir
IPC分类号： G06K9/40 , H04N5/217 , G06T5/00 , H04N5/367
CPC分类号： G06T5/002 , G06T5/005 , H04N5/217 , H04N5/2171 , H04N5/367
摘要： A method of automatically determining a need to service a digital image acquisition system including a digital camera with a lens assembly includes analyzing pixels within one or more acquired digital images according to probability determinations that such pixels correspond to blemish artifacts. It is automatically determined whether a threshold distribution of blemish artifacts is present within one or more of the digital images. A need for service is indicated when at least the threshold distribution is determined to be present.
摘要翻译：一种自动确定包括具有透镜组件的数字照相机的数字图像采集系统的需要的方法包括根据这些像素对应于瑕疵伪影的概率确定来分析一个或多个所获取的数字图像内的像素。自动确定在一个或多个数字图像内是否存在瑕疵伪影的阈值分布。当至少确定阈值分布存在时，指示服务需要。

5. 发明授权

US08836777B2 Automatic detection of vertical gaze using an embedded imaging device 有权
标题翻译：使用嵌入式成像装置自动检测垂直注视
公开(公告)号：US08836777B2
公开(公告)日：2014-09-16
申请号：US13035907
申请日：2011-02-25
申请人： Sumat Mehra
发明人： Sumat Mehra
IPC分类号： H04N9/47 , G06K9/46 , G09G5/00 , G06F3/01 , G06K9/00
CPC分类号： G06F3/013 , G06K9/00315 , G06K9/00335 , G06K9/00597 , G09C5/00
摘要： A method of detecting and applying a vertical gaze direction of a face within a digital image includes analyzing one or both eyes of a face within an acquired image, including determining a degree of coverage of an eye ball by an eye lid within the digital image. Based on the determined degree of coverage of the eye ball by the eye lid, an approximate direction of vertical eye gaze is determined. A further action is selected based on the determined approximate direction of vertical eye gaze.
摘要翻译：检测和应用数字图像内的脸部的垂直注视方向的方法包括分析所获取的图像内的脸部的一只眼睛或两只眼睛，包括确定数字图像内的眼睑的眼球的覆盖程度。根据眼睛眼睛确定的眼球覆盖程度，确定垂直眼睛注视的近似方向。基于确定的垂直眼睛凝视的近似方向来选择进一步的动作。

6. 发明授权

US08750578B2 Detecting facial expressions in digital images 有权
标题翻译：检测数字图像中的面部表情
公开(公告)号：US08750578B2
公开(公告)日：2014-06-10
申请号：US12354707
申请日：2009-01-15
申请人： Catalina Neghina , Mihnea Gangea , Stefan Petrescu , Petronel Bigioi , Emilian David , Eric Zarakov , Eran Steinberg
发明人： Catalina Neghina , Mihnea Gangea , Stefan Petrescu , Petronel Bigioi , Emilian David , Eric Zarakov , Eran Steinberg
IPC分类号： G06K9/00
CPC分类号： H04N5/23219 , G06K9/00228 , G06K9/00255 , G06K9/00281 , G06K9/00288 , G06K9/00302 , G06K9/00308 , H04N5/232 , H04N5/23293
摘要： A method and system for detecting facial expressions in digital images and applications therefore are disclosed. Analysis of a digital image determines whether or not a smile and/or blink is present on a person's face. Face recognition, and/or a pose or illumination condition determination, permits application of a specific, relatively small classifier cascade.
摘要翻译：因此，公开了一种用于检测数字图像和应用中的面部表情的方法和系统。数字图像的分析确定人脸上是否存在微笑和/或眨眼。脸部识别和/或姿势或照明条件确定允许应用特定的相对小的分级器级联。

7. 发明申请

US20140153780A1 FACE SEARCHING AND DETECTION IN A DIGITAL IMAGE ACQUISITION DEVICE 有权
标题翻译：数字图像获取装置中的面部搜索和检测
公开(公告)号：US20140153780A1
公开(公告)日：2014-06-05
申请号：US14177212
申请日：2014-02-10
申请人： DigitalOptics Corporation Europe Limited
发明人： ERAN STEINBERG , PETRONEL BIGIOI , PETER CORCORAN , MIHNEA GANGEA , STEFAN MIREL PETRESCU , ANDREI VASILIU , GABRIEL COSTACHE , ALEXANDRU DRIMBAREAN
IPC分类号： G06K9/00
CPC分类号： G06K9/46 , G06K9/00221 , G06K9/00228 , G06K9/00234 , G06K9/00241 , G06K9/00268 , G06K9/00288
摘要： A method of detecting a face in an image includes performing face detection within a first window of the image at a first location. A confidence level is obtained from the face detection indicating a probability of the image including a face at or in the vicinity of the first location. Face detection is then performed within a second window at a second location, wherein the second location is determined based on the confidence level.
摘要翻译：检测图像中的脸部的方法包括在第一位置处在图像的第一窗口内执行面部检测。从面部检测获得的置信水平，其指示包括在第一位置处或附近的脸部的图像的概率。然后在第二位置的第二窗口内执行面部检测，其中基于置信水平确定第二位置。

8. 发明授权

US08744145B2 Real-time face tracking in a digital image acquisition device 有权
公开(公告)号：US08744145B2
公开(公告)日：2014-06-03
申请号：US13797989
申请日：2013-03-12
申请人： DigitalOptics Corporation Europe Limited
发明人： Stefan Petrescu , Peter Corcoran , Eran Steinberg , Petronel Bigioi , Alexandru Drimbarean
IPC分类号： G06K9/62
CPC分类号： G06K9/00 , G06K9/00234 , G06K9/00248 , G06K9/00261 , G06K9/00281 , G06K9/62 , G06K9/6257 , G06K9/6857 , H04N1/2112 , H04N1/32112 , H04N1/32128 , H04N5/232 , H04N5/23219 , H04N2101/00 , H04N2201/0084 , H04N2201/3205
摘要： An image processing apparatus for tracking faces in an image stream iteratively receives an acquired image from the image stream including one or more face regions. The acquired image is sub-sampled at a specified resolution to provide a sub-sampled image. An integral image is then calculated for a least a portion of the sub-sampled image. Fixed size face detection is applied to at least a portion of the integral image to provide a set of candidate face regions. Responsive to the set of candidate face regions produced and any previously detected candidate face regions, the resolution is adjusted for sub-sampling a subsequent acquired image.

9. 发明授权

US08723879B2 Techniques for reducing noise while preserving contrast in an image 有权
标题翻译：降低噪音同时保留图像对比度的技术
公开(公告)号：US08723879B2
公开(公告)日：2014-05-13
申请号：US12996284
申请日：2009-06-05
申请人： Noy Cohen
发明人： Noy Cohen
IPC分类号： G09G5/02
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 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。

10. 发明授权

US08687894B2 Continuous edge and detail mapping using a weighted monotony measurement 有权
标题翻译：使用加权单调测量的连续边缘和细节映射
公开(公告)号：US08687894B2
公开(公告)日：2014-04-01
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 , G06K9/56
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。

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