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1. 发明授权

US08797418B2 Methods and apparatuses for addressing chromatic aberrations and purple fringing 有权
标题翻译：用于解决色差和紫色边缘的方法和装置
公开(公告)号：US08797418B2
公开(公告)日：2014-08-05
申请号：US13189477
申请日：2011-07-22
申请人： Piotr Stec , Larry Murray , Alexandru Drimbarean
发明人： Piotr Stec , Larry Murray , Alexandru Drimbarean
IPC分类号： H04N5/228 , G06K9/48
CPC分类号： H04N5/217 , G06T5/006 , H04N17/002
摘要： Methods and systems for detecting and correcting chromatic aberration and purple fringing are disclosed. Chromatic aberration can be addressed by separating an image into color planes and then adjusting these to reduce chromatic aberration by using a specific calibration image (calibration chart) as an empirical method to calibrate the image acquisition device. Purple fringing can be corrected by initially addressing color aberration resulting from the lateral chromatic aberration (LCA). The LCA is first removed and then the correction is extended to purple fringing. A discovery is relied upon that the purple fringing is created in the direction of the chromatic aberration and is more pronounced in the direction of the chromatic aberration.
摘要翻译：公开了用于检测和校正色差和紫边的方法和系统。通过将图像分离成色平面，然后通过使用特定的校准图像（校准图）作为校准图像采集装置的经验方法来调整这些以减小色差，可以解决色差。紫色边缘可以通过初始解决由横向色差（LCA）引起的色差来校正。首先删除LCA，然后将修正扩展为紫色条纹。发现依赖于紫色边缘在色差方向上产生，并且在色差方向上更显着。

2. 发明授权

US08692867B2 Object detection and rendering for wide field of view (WFOV) image acquisition systems 有权
标题翻译：用于宽视野（WFOV）图像采集系统的物体检测和渲染
公开(公告)号：US08692867B2
公开(公告)日：2014-04-08
申请号：US12959151
申请日：2010-12-02
申请人： Petronel Bigioi , Alexandru Drimbarean , Mihnea Gangea , Piotr Stec , Peter Corcoran
发明人： Petronel Bigioi , Alexandru Drimbarean , Mihnea Gangea , Piotr Stec , Peter Corcoran
IPC分类号： G02B21/18 , H04N7/00 , G02B21/22
CPC分类号： G02B21/22 , G06K9/6257 , G06T5/006 , G06T2207/30201 , H04N5/23219 , H04N5/23238
摘要： An image acquisition device having a wide field of view includes a lens and image sensor configured to capture an original wide field of view (WFoV) image with a field of view of more than 90°. The device has an object detection engine that includes one or more cascades of object classifiers, e.g., face classifiers. A WFoV correction engine may apply rectilinear and/or cylindrical projections to pixels of the WFoV image, and/or non-linear, rectilinear and/or cylindrical lens elements or lens portions serve to prevent and/or correct distortion within the original WFoV image. One or more objects located within the original and/or distortion-corrected WFoV image is/are detectable by the object detection engine upon application of the one or more cascades of object classifiers.
摘要翻译：具有宽视野的图像采集装置包括：镜头和图像传感器，被配置为捕获具有大于90°的视场的原始宽视野（WFoV）图像。该装置具有对象检测引擎，其包括一个或多个对象分类器级联，例如面部分类器。 WFoV校正引擎可以对WFoV图像的像素施加直线和/或圆柱形投影，和/或非线性直线和/或柱面透镜元件或透镜部分用于防止和/或校正原始WFoV图像内的失真。位于原始和/或失真校正的WFoV图像内的一个或多个对象在应用一个或多个对象分类器级联时可由对象检测引擎检测。

3. 发明授权

US08593542B2 Foreground/background separation using reference images 有权
标题翻译：前景/背景分离使用参考图像
公开(公告)号：US08593542B2
公开(公告)日：2013-11-26
申请号：US12140827
申请日：2008-06-17
申请人： Eran Steinberg , Petronel Bigioi , Adrian Zamfir , Alexandru Drimbarean , Peter Corcoran , Mihai Ciuc , Adrian Capata
发明人： Eran Steinberg , Petronel Bigioi , Adrian Zamfir , Alexandru Drimbarean , Peter Corcoran , Mihai Ciuc , Adrian Capata
IPC分类号： H04N5/262 , H04N5/222 , G06K9/62 , H04N5/228
CPC分类号： H04N5/262 , G06K9/00228 , G06K9/036 , G06K9/3208 , G06T7/11 , G06T2207/30196 , H04N5/222 , H04N5/2226 , H04N5/23219
摘要： A technique involves distinguishing between foreground and background regions of a digital image of a scene. First and second images are captured of nominally a same scene. The first image is a relatively high resolution image taken with the foreground more in focus than the background, while the second image is a relatively low resolution reference image taken with the background more in focus than the foreground. Regions of the captured images are assigned as foreground or background. In accordance with the assigning, one or more processed images are rendered based on the first image or the second image, or both.
摘要翻译：一种技术涉及区分场景的数字图像的前景和背景区域。第一和第二个图像被捕获在名义上相同的场景中。第一个图像是一个相对较高的分辨率图像，前景比背景更聚焦，而第二个图像是一个相对较低的分辨率参考图像，背景比前景更为集中。拍摄图像的区域被分配为前景或背景。根据分配，基于第一图像或第二图像或两者来呈现一个或多个经处理的图像。

4. 发明授权

US08509498B2 Real-time face tracking in a digital image acquisition device 有权
标题翻译：数字图像采集设备中的实时人脸跟踪
公开(公告)号：US08509498B2
公开(公告)日：2013-08-13
申请号：US13245738
申请日：2011-09-26
申请人： Stefan Petrescu , Peter Corcoran , Eran Steinberg , Petronel Bigioi , Alexandru Drimbarean
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.
摘要翻译：用于跟踪图像流中的面部的图像处理装置从包括一个或多个面部区域的图像流中迭代地接收获取的图像。所获取的图像以指定的分辨率被子采样以提供次采样图像。然后对子采样图像的至少一部分计算整体图像。将固定大小的脸部检测应用于积分图像的至少一部分以提供一组候选面部区域。响应于产生的候选面部区域的集合和任何先前检测到的候选面部区域，调整分辨率以对后续获取的图像进行子采样。

5. 发明授权

US08508652B2 Autofocus method 有权
标题翻译：自动对焦方式
公开(公告)号：US08508652B2
公开(公告)日：2013-08-13
申请号：US13020805
申请日：2011-02-03
申请人： Felix Albu , Vlad Poenaru , Alexandru Drimbarean
发明人： Felix Albu , Vlad Poenaru , Alexandru Drimbarean
IPC分类号： G03B13/00 , H04N5/232 , H04N5/228 , G06K9/40 , G06K9/36 , G06K9/64
CPC分类号： H04N5/23212
摘要： An autofocus method includes acquiring multiple images each having a camera lens focused at a different focus distance. A sharpest image is determined among the multiple images. Horizontal, vertical and/or diagonal integral projection (IP) vectors are computed for each of the multiple images. One or more IP vectors of the sharpest image is/are convoluted with multiple filters of different lengths to generate one or more filtered IP vectors for the sharpest image. Differences are computed between the one or more filtered IP vectors of the sharpest image and one or more IP vectors of at least one of the other images of the multiple images. At least one blur width is estimated between the sharpest image and the at least one of the other images of the multiple images as a minimum value among the computed differences over a selected range. The steps are repeated one or more times to obtain a sequence of estimated blur width values. A focus position is adjusted based on the sequence of estimated blur width values.
摘要翻译：自动聚焦方法包括获取多个图像，每个图像具有以不同对焦距离聚焦的相机透镜。在多个图像之间确定最清晰的图像。为多个图像中的每一个计算水平，垂直和/或对角积分投影（IP）向量。最清晰图像的一个或多个IP向量与不同长度的多个滤波器进行卷积，以生成用于最清晰图像的一个或多个滤波IP向量。在最清晰图像的一个或多个滤波IP向量与多个图像的至少一个其他图像的一个或多个IP向量之间计算差异。在所选择的范围内的所计算的差值中，将最清晰的图像和多个图像的至少一个其他图像之间的至少一个模糊宽度估计为最小值。重复这些步骤一次或多次以获得估计的模糊宽度值的序列。基于估计的模糊宽度值的顺序来调整焦点位置。

6. 发明授权

US08294748B2 Panorama imaging using a blending map 有权
标题翻译：全景成像使用混合图
公开(公告)号：US08294748B2
公开(公告)日：2012-10-23
申请号：US12636618
申请日：2009-12-11
申请人： Piotr Stec , Larry Murray , Alexandru Drimbarean , Igor Barcovschi , Peter Corcoran
发明人： Piotr Stec , Larry Murray , Alexandru Drimbarean , Igor Barcovschi , Peter Corcoran
IPC分类号： H04N7/00 , H04N5/225 , H04N5/262 , G06K9/36
CPC分类号： H04N5/232 , G06T3/4038 , H04N5/23238
摘要： A technique of generating a panoramic image involves acquiring a set of at least two main image frames, as well as corresponding generating and/or acquiring corresponding relatively low-resolution image frames, of overlapping portions of a panoramic scene. A map or other information is stored relating to the generation of a low-res panorama. A main panorama image is formed by joining main image frames based on the map or other information gained in the low-res process.
摘要翻译：产生全景图像的技术涉及获取至少两个主要图像帧的集合，以及相应地生成和/或获取全景场景的重叠部分的相对较低分辨率的图像帧。存储有关生成低分辨率全景图的地图或其他信息。通过基于在低分辨率处理中获得的地图或其他信息连接主要图像帧来形成主要全景图像。

7. 发明授权

US08233674B2 Red eye false positive filtering using face location and orientation 有权
标题翻译：红眼假阳性过滤使用脸部位置和方向
公开(公告)号：US08233674B2
公开(公告)日：2012-07-31
申请号：US13113913
申请日：2011-05-23
申请人： Eran Steinberg , Alexandru Drimbarean , Florin Nanu
发明人： Eran Steinberg , Alexandru Drimbarean , Florin Nanu
IPC分类号： G06K9/00
CPC分类号： G06K9/00228 , G06K9/00281 , G06T7/12 , G06T2207/30216
摘要： An image is acquired including a red eye defect and non red eye defect regions having a red color. An initial segmentation of candidate redeye regions is performed. A location and orientation of one or more faces within the image are determined. The candidate redeye regions are analyzed based on the determined location and orientation of the one or more faces to determine a probability that each redeye region appears at a position of an eye. Any confirmed redeye regions having at least a certain threshold probability of being a false positive are removed as candidate redeye defect regions. The remaining redeye defect regions are corrected and a red eye corrected image is generated.
摘要翻译：获取包括红眼缺陷的图像和具有红色的非红眼缺陷区域。执行候选红眼区域的初始分割。确定图像内的一个或多个面部的位置和方向。基于确定的一个或多个面部的位置和取向来分析候选红眼区域，以确定每个红眼区域出现在眼睛的位置的概率。具有至少一定阈值概率为假阳性的任何确认的红眼区域作为候选红眼缺陷区域被去除。校正剩余的红眼缺陷区域，并生成红眼校正图像。

8. 发明授权

US08204330B2 Adaptive PSF estimation technique using a sharp preview and a blurred image 有权
标题翻译：使用锐利预览和模糊图像的自适应PSF估计技术
公开(公告)号：US08204330B2
公开(公告)日：2012-06-19
申请号：US12820034
申请日：2010-06-21
申请人： Felix Albu , Alexandru Drimbarean , Adrian Zamfir , Corneliu Florea , Peter Corcoran
发明人： Felix Albu , Alexandru Drimbarean , Adrian Zamfir , Corneliu Florea , Peter Corcoran
IPC分类号： G06K9/40 , H04N5/228
CPC分类号： H04N5/23264 , G06T5/003 , G06T5/10 , G06T5/20 , G06T2207/10016 , G06T2207/20056 , G06T2207/20201 , H04N5/23248 , H04N5/23277
摘要： An adaptive motion estimation and deblurring technique for acquired digital images includes acquiring multiple digital images with a moving digital image acquisition device that includes an image sensor, including a relatively sharp, underexposed reference image and a blurred image. Anb initial approximate point spread function (PSF) is estimated corresponding to the moving of the device. A different DC offset point is determined and a second PSF is calculated based on the different DC offset point.
摘要翻译：用于获取的数字图像的自适应运动估计和去模糊技术包括采用包括图像传感器的移动数字图像采集装置获取多个数字图像，图像传感器包括相对尖锐的曝光不足的参考图像和模糊图像。对应于设备的移动估计Anb初始近似点扩散函数（PSF）。确定不同的DC偏移点，并且基于不同的DC偏移点来计算第二PSF。

9. 发明申请

US20120019614A1 Variable Stereo Base for (3D) Panorama Creation on Handheld Device 审中-公开
标题翻译：（3D）手持设备全景创建的可变立体声基座
公开(公告)号：US20120019614A1
公开(公告)日：2012-01-26
申请号：US13174716
申请日：2011-06-30
申请人： Larry Murray , Igor Barcovschi , Piotr Stec , James Harkin , Petronel Bigioi , George Susanu , Alexandru Drimbarean , Peter Corcoran
发明人： Larry Murray , Igor Barcovschi , Piotr Stec , James Harkin , Petronel Bigioi , George Susanu , Alexandru Drimbarean , Peter Corcoran
IPC分类号： H04N7/00
CPC分类号： G06T3/4038 , H04N13/106
摘要： A technique of generating a stereoscopic panorama image includes panning a portable camera device, and acquiring multiple image frames. Multiple at least partially overlapping image frames are acquired of portions of the scene. The method involves registering the image frames, including determining displacements of the imaging device between acquisitions of image frames. Multiple panorama images are generated including joining image frames of the scene according to spatial relationships and determining stereoscopic counterpart relationships between the multiple panorama images. The multiple panorama images are processed based on the determined stereoscopic counterpart relationships to form a stereoscopic panorama image.
摘要翻译：产生立体全景图像的技术包括平移便携式相机装置，并获取多个图像帧。获取场景部分的多个至少部分重叠的图像帧。该方法包括登记图像帧，包括在获取图像帧之间确定成像装置的位移。产生多个全景图像，包括根据空间关系连接场景的图像帧并确定多个全景图像之间的立体对等关系。基于确定的立体对等物关系处理多个全景图像以形成立体全景图像。

10. 发明授权

US08055029B2 Real-time face tracking in a digital image acquisition device 有权
标题翻译：数字图像采集设备中的实时人脸跟踪
公开(公告)号：US08055029B2
公开(公告)日：2011-11-08
申请号：US12063089
申请日：2007-06-18
申请人： Stefan Petrescu , Peter Corcoran , Eran Steinberg , Petronel Bigioi , Alexandru Drimbarean
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.
摘要翻译：用于跟踪图像流中的面部的图像处理装置从包括一个或多个面部区域的图像流中迭代地接收获取的图像。所获取的图像以指定的分辨率被子采样以提供次采样图像。然后对子采样图像的至少一部分计算整体图像。将固定大小的脸部检测应用于积分图像的至少一部分以提供一组候选面部区域。响应于所生成的候选面部区域的集合和任何先前检测到的候选面部区域，调整分辨率以对后续获取的图像进行子采样。

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