Low-light video frame enhancement
    1.
    发明授权
    Low-light video frame enhancement 有权
    低光视频帧增强

    公开(公告)号:US08199222B2

    公开(公告)日:2012-06-12

    申请号:US12485316

    申请日:2009-06-16

    IPC分类号: H04N5/225

    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。

    LOW-LIGHT VIDEO FRAME ENHANCEMENT
    2.
    发明申请
    LOW-LIGHT VIDEO FRAME ENHANCEMENT 有权
    低照度视频帧增强

    公开(公告)号:US20090303343A1

    公开(公告)日:2009-12-10

    申请号:US12485316

    申请日:2009-06-16

    IPC分类号: H04N5/228 G06K9/00

    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。

    Image processing method and apparatus
    5.
    发明授权
    Image processing method and apparatus 有权
    图像处理方法和装置

    公开(公告)号:US08417055B2

    公开(公告)日:2013-04-09

    申请号:US11856721

    申请日:2007-09-18

    IPC分类号: G06K9/40

    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。

    Image Processing Method and Apparatus
    6.
    发明申请
    Image Processing Method and Apparatus 有权
    图像处理方法和装置

    公开(公告)号:US20080219581A1

    公开(公告)日:2008-09-11

    申请号:US11856721

    申请日:2007-09-18

    IPC分类号: G06K9/40

    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。

    Autofocus method
    7.
    发明授权
    Autofocus method 有权
    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

    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。

    Autofocus Method
    8.
    发明申请
    Autofocus Method 有权
    自动对焦方式

    公开(公告)号:US20120200725A1

    公开(公告)日:2012-08-09

    申请号:US13020805

    申请日:2011-02-03

    IPC分类号: H04N5/232 H04N5/228

    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。

    Face detection in mid-shot digital images
    9.
    发明授权
    Face detection in mid-shot digital images 有权
    中端数字图像中的人脸检测

    公开(公告)号:US08494286B2

    公开(公告)日:2013-07-23

    申请号:US12026484

    申请日:2008-02-05

    IPC分类号: G06K9/00

    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。

    Face Detection in Mid-Shot Digital Images
    10.
    发明申请
    Face Detection in Mid-Shot Digital Images 有权
    中射数字图像中的人脸检测

    公开(公告)号:US20090196466A1

    公开(公告)日:2009-08-06

    申请号:US12026484

    申请日:2008-02-05

    IPC分类号: G06K9/00

    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。