Scene-based method for determining focus
    1.
    发明授权
    Scene-based method for determining focus 失效
    用于确定焦点的基于场景的方法

    公开(公告)号:US07171054B2

    公开(公告)日:2007-01-30

    申请号:US10427398

    申请日:2003-05-01

    IPC分类号: G06K9/40

    CPC分类号: G02B7/36 G06T7/0004

    摘要: A method and application specific integrated circuit for determining focus for an image capture system using scene content within an image, including the steps of: acquiring, from the image, image data having different focus positions; dividing the image data into sub-images; calculating a sub-image sharpness value for each sub-image; calculating an image sharpness value for each focus position using the sub-image sharpness values; plotting the sharpness values versus the focus position; fitting a curve to the plot of the image sharpness values versus the focus position, wherein the curve has a peak sharpness value; and determining the focus of the image capture system from a point on the curve.

    摘要翻译: 一种用于确定使用图像内的场景内容的图像拍摄系统的焦点的方法和专用集成电路,包括以下步骤:从图像获取具有不同焦点位置的图像数据; 将图像数据划分为子图像; 计算每个子图像的子图像清晰度值; 使用子图像清晰度值计算每个聚焦位置的图像清晰度值; 绘制清晰度值与焦点位置; 将曲线拟合到图像清晰度值对焦点位置的曲线图,其中曲线具有峰值清晰度值; 以及从曲线上的点确定图像捕获系统的焦点。

    High resolution image formation from a multiple aperture imaging system
    3.
    发明授权
    High resolution image formation from a multiple aperture imaging system 失效
    来自多孔成像系统的高分辨率图像形成

    公开(公告)号:US06880943B2

    公开(公告)日:2005-04-19

    申请号:US10454266

    申请日:2003-06-04

    IPC分类号: G01J9/00 G02B27/58 G02B5/08

    CPC分类号: G01J9/00 G02B27/58

    摘要: In a method for imaging using multiple apertures, the present invention uses a wavefront sensor, a phase sensor, and an image processor to construct a high-resolution image without using complex relay optics. A wavefront sensor collects information that allows the wavefront from each aperture to be reconstructed and a phase sensor collects information regarding the relative phase difference between the apertures. An image processor uses the information collected from the phase sensor to correct the phase differences between the apertures, reconstruct the wavefronts from the wavefront sensor data, then coherently sums the wavefronts from each aperture to form a high-resolution image that corresponds to a synthesized aperture that is larger than any of the individual apertures.

    摘要翻译: 在使用多个孔径成像的方法中,本发明使用波前传感器,相位传感器和图像处理器来构造高分辨率图像而不使用复杂的中继光学器件。 波前传感器收集允许来自每个孔径的波阵面的信息,并且相位传感器收集关于孔之间的相对相位差的信息。 图像处理器使用从相位传感器收集的信息来校正孔之间的相位差,从波前传感器数据重建波前,然后将来自每个孔径的波前相加地相加以形成对应于合成孔径的高分辨率图像 这大于任何单独的孔。

    Adaptive process for removing streaks in multi-band digital images
    5.
    发明授权
    Adaptive process for removing streaks in multi-band digital images 失效
    用于去除多频带数字图像中的条纹的自适应处理

    公开(公告)号:US06912322B2

    公开(公告)日:2005-06-28

    申请号:US09736812

    申请日:2000-12-14

    摘要: A method of removing streaks from multi-band digital images is presented in which a multi-band image is transformed to an advantageous spectral space, in which a streak removal operation is applied to the image in the advantageous spectral space. The streak removal operation is a method of removing columnar streaks from a multi-band digital image of the type in which it is assumed that pixels in a predetermined spatial and spectral region near a given pixel are strongly related to each other and employing gain and offset values to compute streak removal information, a test is performed for a strong relation between the pixels in a predetermined region spatially and spectrally near a given pixel and streak removal information is computed only if such a strong relationship exists, whereby image content that does not extend the full length of the image in the column direction will not be interpreted as a streak.

    摘要翻译: 提出了一种从多频带数字图像中去除条纹的方法,其中将多频带图像转换为有利的频谱空间,其中在有利的频谱空间中对图像应用条纹去除操作。 条纹去除操作是从其中假定给定像素附近的预定空间和光谱区域中的像素彼此强相关并且使用增益和偏移的类型的多频带数字图像中去除柱状条纹的方法 用于计算条纹去除信息的值,在给定像素的空间和频谱附近的预定区域中的像素之间执行强关系的测试,并且仅在存在这样的强关系的情况下才计算条纹去除信息,从而不扩展图像内容 列方向上的图像的全长将不会被解释为条纹。

    Adaptive process for removing streaks in digital images
    6.
    发明授权
    Adaptive process for removing streaks in digital images 失效
    用于去除数字图像条纹的自适应过程

    公开(公告)号:US5881182A

    公开(公告)日:1999-03-09

    申请号:US873882

    申请日:1997-05-12

    CPC分类号: H04N5/3658 G06T5/20 H04N1/409

    摘要: A method of removing columnar streaks from a digital image of the type in which it is assumed that pixels in a predetermined region near a given pixel are strongly related to each other and employing gain and offset values to compute streak removal information, a test is performed for a strong relation between the pixels in a predetermined region near a given pixel and streak removal information is computed only if such a strong relationship exists, whereby image content that does not extend the full length of the image in the column direction will not be interpreted as a streak.

    摘要翻译: 从其中假设给定像素附近的预定区域中的像素彼此强烈相关并且使用增益和偏移值来计算条纹去除信息的类型的数字图像中去除柱状条纹的方法,执行测试 只要存在这样的强关系,就计算出给定像素附近的预定区域中的像素之间的强关系和条纹去除信息,从而不会解释不扩展列方向上图像的全长的图像内容 作为连胜。

    Method for determining an imaging system focus error
    7.
    发明授权
    Method for determining an imaging system focus error 失效
    确定成像系统聚焦误差的方法

    公开(公告)号:US5166506A

    公开(公告)日:1992-11-24

    申请号:US648507

    申请日:1991-01-30

    摘要: A method for determining a radiation imaging system focus error, that employs a novel focus sensor. In a preferred embodiment, the novel focus sensor comprises two beamsplitters, a spacer, and three detectors comprising CCD arrays. The three detectors are constrained to satisfy radiation path length specifications, with respect to the beamsplitters and spacer. In the method, the focus sensor may be aligned in an unused portion of an imaging system radiation field. The detectors simultaneously image the same scene, sampling it at three different focus positions. The sampling action becomes a basis for generating a parabolic curve; a maximum of the parabolic curve is a measure of the imaging system focus error.

    摘要翻译: 一种用于确定辐射成像系统聚焦误差的方法,其采用新颖的聚焦传感器。 在优选实施例中,新型聚焦传感器包括两个分束器,间隔器和包括CCD阵列的三个检测器。 三个检测器被限制为满足辐射路径长度规格,相对于分束器和间隔物。 在该方法中,聚焦传感器可以对准成像系统辐射场的未使用部分。 检测器同时对同一场景进行成像,在三个不同的焦点位置进行采样。 采样动作成为产生抛物线曲线的基础; 抛物线曲线的最大值是成像系统聚焦误差的度量。

    User adjustable image enhancement filtering
    8.
    发明授权
    User adjustable image enhancement filtering 有权
    用户可调整图像增强滤镜

    公开(公告)号:US07636488B2

    公开(公告)日:2009-12-22

    申请号:US10740318

    申请日:2003-12-18

    申请人: Robert D. Fiete

    发明人: Robert D. Fiete

    IPC分类号: G06K9/40

    摘要: In an image enhancement method, computer program product, and system a set of boundary frequencies within a frequency spectrum are defined. The boundary frequencies divide the spectrum into a plurality of different spatial frequency regions. A digital image is then processed with a filter having a plurality of functions. Each function is exclusive to one of the spatial frequency regions. The functions of adjoining regions have equal values at respective boundary frequencies. A set of peak and or valley filter values of the functions at the respective boundary frequencies can be defined.

    摘要翻译: 在图像增强方法中,定义了计算机程序产品和系统中一组频谱内的边界频率。 边界频率将频谱划分成多个不同的空间频率区域。 然后用具有多个功能的滤波器处理数字图像。 每个功能都是空间频率区域之一。 相邻区域的功能在各边界频率处具有相等的值。 可以定义在各个边界频率处的函数的峰值或谷值滤波器值的集合。

    Multiple aperture imaging system
    9.
    发明授权
    Multiple aperture imaging system 有权
    多孔成像系统

    公开(公告)号:US06943946B2

    公开(公告)日:2005-09-13

    申请号:US10427423

    申请日:2003-05-01

    申请人: Robert D. Fiete

    发明人: Robert D. Fiete

    IPC分类号: G02B17/06 G02B23/00

    CPC分类号: G02B17/0652

    摘要: A multiple aperture imaging system, that includes: a plurality of imaging elements for capturing light; an optical relay assembly for phasing the captured light; a means for diverting the captured light within the multiple aperture imaging system to produce a plurality of images; and an imaging sensor capable of receiving the captured light from each of the plurality of imaging elements.

    摘要翻译: 一种多孔成像系统,包括:多个用于捕获光的成像元件; 用于相位捕获的光的光学继电器组件; 用于在多孔成像系统内转移捕获的光以产生多个图像的装置; 以及能够从多个成像元件中的每一个接收所捕获的光的成像传感器。

    Scene-based autofocus method
    10.
    发明授权
    Scene-based autofocus method 失效
    基于场景的自动对焦方式

    公开(公告)号:US6023056A

    公开(公告)日:2000-02-08

    申请号:US72010

    申请日:1998-05-04

    IPC分类号: G02B7/36 G02B7/04

    CPC分类号: G02B7/36

    摘要: In a method of determining focus in an image capture system of the type having an image sensor, optics for forming an image of a scene on the image sensor, and an image processor for determining the best focus, an image is acquired such that the focus of the image changes continuously, line by line, across the image. A plurality of edges above a predetermined magnitude are detected in the image and the sharpness of the detected edge is measured. The sharpest edge in each line of the image is determined and plotted versus the location of the line in the image. A curve is fit to the plot of sharpness versus location and the best focus of the imaging system is determined from the peak of the curve fit.

    摘要翻译: 在确定具有图像传感器的类型的图像捕获系统中的焦点的方法中,用于形成图像传感器上的场景的图像的光学器件和用于确定最佳聚焦的图像处理器,获取图像,使得焦点 的图像不断地逐行变化,跨越图像。 在图像中检测到高于预定幅度的多个边缘,并且测量检测到的边缘的清晰度。 确定图像每行中最锐利的边缘,并绘制相对于图像中线条的位置。 曲线适合于清晰度与位置的关系曲线,并且从曲线拟合的峰值确定成像系统的最佳焦点。