-
公开(公告)号:US08199222B2
公开(公告)日:2012-06-12
申请号:US12485316
申请日:2009-06-16
申请人: Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
发明人: Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
IPC分类号: H04N5/225
CPC分类号: H04N5/2355 , G06T5/009 , G06T5/50 , G06T2207/10016 , G06T2207/10024 , G06T2207/10144 , H04N5/235 , H04N9/045
摘要: A method of combining image data from multiple frames to enhance one or more parameters of video image quality includes acquiring a first image at a first exposure duration, as well as acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that the first and second images include approximately a same first scene. In this way, the second image is relatively sharp and under-exposed, while the first image is relatively well-exposed and less sharp than the second image. Brightness and/or color information are extracted from the first image and applied to the second image to generate an enhanced version of the second image.
摘要翻译: 一种组合来自多个帧的图像数据以增强视频图像质量的一个或多个参数的方法包括以第一曝光持续时间获取第一图像,以及以比第一曝光持续时间短的第二曝光持续时间获取第二图像,并且 在获取第一图像之前,恰好在或之后重叠的时间,使得第一和第二图像包括大致相同的第一场景。 以这种方式,第二图像相对较锋利且曝光不足,而第一图像相对曝光较好,并且不如第二图像那样锐利。 从第一图像提取亮度和/或颜色信息并将其应用于第二图像以生成第二图像的增强版本。
-
公开(公告)号:US20090303343A1
公开(公告)日:2009-12-10
申请号:US12485316
申请日:2009-06-16
申请人: Alexandru Drimbarean , Petronel Bigioi , Peter Corcoran , Eran Steinberg , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea
发明人: Alexandru Drimbarean , Petronel Bigioi , Peter Corcoran , Eran Steinberg , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea
CPC分类号: H04N5/2355 , G06T5/009 , G06T5/50 , G06T2207/10016 , G06T2207/10024 , G06T2207/10144 , H04N5/235 , H04N9/045
摘要: A method of combining image data from multiple frames to enhance one or more parameters of video image quality includes acquiring a first image at a first exposure duration, as well as acquiring a second image at a second exposure duration shorter than the first exposure duration and at a time just before, just after or overlapping in time with acquiring the first image, such that the first and second images include approximately a same first scene. In this way, the second image is relatively sharp and under-exposed, while the first image is relatively well-exposed and less sharp than the second image. Brightness and/or color information are extracted from the first image and applied to the second image to generate an enhanced version of the second image.
摘要翻译: 一种组合来自多个帧的图像数据以增强视频图像质量的一个或多个参数的方法包括以第一曝光持续时间获取第一图像,以及以比第一曝光持续时间短的第二曝光持续时间获取第二图像,并且 在获取第一图像之前,恰好在或之后重叠的时间,使得第一和第二图像包括大致相同的第一场景。 以这种方式,第二图像相对较锋利且曝光不足,而第一图像相对曝光较好,并且不如第二图像那样锐利。 从第一图像提取亮度和/或颜色信息并将其应用于第二图像以生成第二图像的增强版本。
-
公开(公告)号:US20110205381A1
公开(公告)日:2011-08-25
申请号:US12941983
申请日:2010-11-08
申请人: Ruxandra Vranceanu , Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
发明人: Ruxandra Vranceanu , Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
IPC分类号: H04N5/225
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.
摘要翻译: 提供了一种用于从低光图像产生锐利,曝光良好的彩色图像的技术。 获得一系列曝光不足的图像。 计算平均图像,并且基于一系列曝光不足的图像来生成和图像。 平均图像的像素的色度变量被映射到和图像的像素的色度变量。 未曝光图像系列中的像素的色度值被和图像的色度值代替。 基于具有替换的色度值的一系列曝光不足的图像产生一组锐利,良好曝光的彩色图像。
-
公开(公告)号:US08698924B2
公开(公告)日:2014-04-15
申请号:US12941983
申请日:2010-11-08
申请人: Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
发明人: Alexandru Drimbarean , Adrian Zamfir , Felix Albu , Vlad Poenaru , Corneliu Florea , Petronel Bigioi , Eran Steinberg , Peter Corcoran
IPC分类号: H04N9/64
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.
摘要翻译: 提供了一种用于从低光图像产生锐利,曝光良好的彩色图像的技术。 获得一系列曝光不足的图像。 计算平均图像,并且基于一系列曝光不足的图像来生成和图像。 平均图像的像素的色度变量被映射到和图像的像素的色度变量。 未曝光图像系列中的像素的色度值被和图像的色度值代替。 基于具有替换的色度值的一系列曝光不足的图像产生一组锐利,良好曝光的彩色图像。
-
公开(公告)号:US08417055B2
公开(公告)日:2013-04-09
申请号:US11856721
申请日:2007-09-18
申请人: Felix Albu , Eran Steinberg , Alexandru Drimbarean , Corneliu Florea , Adrian Zamfir , Peter Corcoran , Vlad Poenaru
发明人: Felix Albu , Eran Steinberg , Alexandru Drimbarean , Corneliu Florea , Adrian Zamfir , Peter Corcoran , Vlad Poenaru
IPC分类号: G06K9/40
CPC分类号: G06T5/003 , G06T3/4053 , G06T5/00 , G06T5/50 , G06T2207/20201
摘要: A method and apparatus for providing image processing. For one embodiment of the invention, an image processing apparatus is arranged to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image, nominally of the same scene, the first and second images being derived from respective image sources. The apparatus provides a portion of the relatively first underexposed image as an input signal to an adaptive filter; and a corresponding portion of the second relatively well exposed image as a desired signal to the adaptive filter. The adaptive filter produces an output signal from the input signal and the desired signal; and an image generator constructs a first filtered image from the output signal, relatively less blurred than the second image.
摘要翻译: 一种用于提供图像处理的方法和装置。 对于本发明的一个实施例,图像处理装置被布置成处理场景的第一相对不足曝光和清晰的图像,以及名义上为相同场景的第二相对良好曝光和模糊的图像,第一和第二图像从 各自的图像来源。 该装置将相对第一曝光不足的图像的一部分提供给自适应滤波器的输入信号; 以及第二相对良好曝光的图像的相应部分作为自适应滤波器的期望信号。 自适应滤波器产生来自输入信号和期望信号的输出信号; 并且图像发生器从输出信号构建第一滤波图像,其比第二图像相对较少地模糊。
-
公开(公告)号:US20080219581A1
公开(公告)日:2008-09-11
申请号:US11856721
申请日:2007-09-18
申请人: Felix Albu , Eran Steinberg , Alexandru Drimbarean , Corneliu Florea , Adrian Zamfir , Peter Corcoran , Vlad Poenaru
发明人: Felix Albu , Eran Steinberg , Alexandru Drimbarean , Corneliu Florea , Adrian Zamfir , Peter Corcoran , Vlad Poenaru
IPC分类号: G06K9/40
CPC分类号: G06T5/003 , G06T3/4053 , G06T5/00 , G06T5/50 , G06T2207/20201
摘要: A method and apparatus for providing image processing. For one embodiment of the invention, an image processing apparatus is arranged to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image, nominally of the same scene, the first and second images being derived from respective image sources. The apparatus provides a portion of the relatively first underexposed image as an input signal to an adaptive filter; and a corresponding portion of the second relatively well exposed image as a desired signal to the adaptive filter. The adaptive filter produces an output signal from the input signal and the desired signal; and an image generator constructs a first filtered image from the output signal, relatively less blurred than the second image.
摘要翻译: 一种用于提供图像处理的方法和装置。 对于本发明的一个实施例,图像处理装置被布置为处理场景的第一相对不足曝光和清晰的图像,以及名义上为相同场景的第二相对良好曝光和模糊的图像,第一和第二图像从 各自的图像来源。 该装置将相对第一曝光不足的图像的一部分提供给自适应滤波器的输入信号; 以及第二相对良好曝光的图像的相应部分作为自适应滤波器的期望信号。 自适应滤波器产生来自输入信号和期望信号的输出信号; 并且图像发生器从输出信号构建第一滤波图像,其比第二图像相对较少地模糊。
-
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
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。
-
公开(公告)号:US20120200725A1
公开(公告)日:2012-08-09
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
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。
-
公开(公告)号:US08494286B2
公开(公告)日:2013-07-23
申请号:US12026484
申请日:2008-02-05
申请人: Adrian Capata , Vlad Poenaru , Eran Steinberg
发明人: Adrian Capata , Vlad Poenaru , Eran Steinberg
IPC分类号: G06K9/00
CPC分类号: G06K9/00 , G06K9/00228 , H04N5/23219 , H04N5/23229 , H04N5/23293 , H04N5/275 , H04N2101/00
摘要: A method for detecting a face in a mid-shot digital image of a person comprises capturing first and second mid-shot digital images of nominally the same scene using different capture settings such that the foreground is differently differentiated from the background in each image, and comparing the first and second images to determine the foreground region of the images. A portion of the foreground region likely to correspond to a face is estimated based upon the geometry of the foreground region.
摘要翻译: 用于检测人的中射数字图像中的脸部的方法包括使用不同的捕捉设置捕获名义上相同场景的第一和第二中射数字图像,使得前景与每个图像中的背景不同地区分开,以及 比较第一和第二图像以确定图像的前景区域。 基于前景区域的几何结构来估计可能对应于脸部的前景区域的一部分。
-
公开(公告)号:US20090196466A1
公开(公告)日:2009-08-06
申请号:US12026484
申请日:2008-02-05
申请人: Adrian Capata , Vlad Poenaru , Eran Steinberg
发明人: Adrian Capata , Vlad Poenaru , Eran Steinberg
IPC分类号: G06K9/00
CPC分类号: G06K9/00 , G06K9/00228 , H04N5/23219 , H04N5/23229 , H04N5/23293 , H04N5/275 , H04N2101/00
摘要: A method for detecting a face in a mid-shot digital image of a person comprises capturing first and second mid-shot digital images of nominally the same scene using different capture settings such that the foreground is differently differentiated from the background in each image, and comparing the first and second images to determine the foreground region of the images. A portion of the foreground region likely to correspond to a face is estimated based upon the geometry of the foreground region.
摘要翻译: 用于检测人的中射数字图像中的脸部的方法包括使用不同的捕捉设置捕获名义上相同场景的第一和第二中射数字图像,使得前景与每个图像中的背景不同地区分开,以及 比较第一和第二图像以确定图像的前景区域。 基于前景区域的几何结构来估计可能对应于脸部的前景区域的一部分。
-
-
-
-
-
-
-
-
-