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    Method for image skew detection
    6.
    发明授权
    Method for image skew detection 有权
    图像偏斜检测方法

    公开(公告)号：US08160393B2

    公开(公告)日：2012-04-17

    申请号：US12559755

    申请日：2009-09-15

    申请人： Chris W. Honsinger ,  Paul W. Jones

    发明人： Chris W. Honsinger ,  Paul W. Jones

    IPC分类号： G06K9/36

    CPC分类号： G06K9/3275

    摘要： A method for calculating a skew angle of an original image, executed at least in part on a computer system stores image data for the original image in an electronic memory, then forms an energy-normalized image according to the relative contrast amplitude of image features over each of a plurality of local image regions within the stored image data. A partitioned image is formed by partitioning the energy-normalized image into a number of sub-regions. A summed region is formed as a combination of image pixel data from the sub-regions. A Fourier magnitude spectrum is obtained by performing a Fourier transform on the summed region. The skew angle is calculated according to the peak value of a radial line integration function that is formed by integrating the Fourier magnitude spectrum along each of a plurality of lines of constant radial angles. An output signal indicates the calculated skew angle.

    摘要翻译： 用于计算至少部分地在计算机系统上执行的原始图像的偏斜角的方法将原始图像的图像数据存储在电子存储器中，然后根据图像特征的相对对比度幅度形成能量标准化图像 所存储的图像数据内的多个局部图像区域中的每一个。 通过将能量标准化图像分割成多个子区域来形成分割图像。 求和区域形成为来自子区域的图像像素数据的组合。 通过在求和区域上执行傅里叶变换来获得傅里叶幅度谱。 根据通过沿着恒定径向角度的多条线中的每一条积分傅立叶幅度谱形成的径向线积分函数的峰值来计算偏斜角。 输出信号表示计算出的偏斜角。

    Method for image quality assessment using quality vectors
    7.
    发明授权
    Method for image quality assessment using quality vectors 有权
    使用质量矢量图像质量评估的方法

    公开(公告)号：US08126197B2

    公开(公告)日：2012-02-28

    申请号：US12274438

    申请日：2008-11-20

    申请人： Paul W. Jones ,  Chris W. Honsinger ,  Robert J. McComb

    发明人： Paul W. Jones ,  Chris W. Honsinger ,  Robert J. McComb

    IPC分类号： G06K9/00

    CPC分类号： G06K9/036

    摘要： A method for assessing the image quality of image data acquires image data, segments the image data into at least one spatial region, obtains a plurality of image quality measures for the at least one spatial region, and forms at least one quality vector that has two or more quality measures for the at least one spatial region. The at least one quality vector is classified into one of a plurality of predefined quality classes.

    摘要翻译： 用于评估图像数据的图像质量的方法获取图像数据，将图像数据分割成至少一个空间区域，获得用于至少一个空间区域的多个图像质量度量，并且形成至少一个具有两个 或至少一个空间区域的更多质量测量。 所述至少一个质量矢量被分类为多个预定质量等级之一。

    Method for Image Skew Detection
    8.
    发明申请
    Method for Image Skew Detection 有权
    图像歪斜检测方法

    公开(公告)号：US20100067826A1

    公开(公告)日：2010-03-18

    申请号：US12559755

    申请日：2009-09-15

    申请人： Chris W. Honsinger ,  Paul W. Jones

    发明人： Chris W. Honsinger ,  Paul W. Jones

    IPC分类号： G06K9/36

    CPC分类号： G06K9/3275

    摘要： A method for calculating a skew angle of an original image, executed at least in part on a computer system stores image data for the original image in an electronic memory, then forms an energy-normalized image according to the relative contrast amplitude of image features over each of a plurality of local image regions within the stored image data. A partitioned image is formed by partitioning the energy-normalized image into a number of sub-regions. A summed region is formed as a combination of image pixel data from the sub-regions. A Fourier magnitude spectrum is obtained by performing a Fourier transform on the summed region. The skew angle is calculated according to the peak value of a radial line integration function that is formed by integrating the Fourier magnitude spectrum along each of a plurality of lines of constant radial angles. An output signal indicates the calculated skew angle.

    摘要翻译： 用于计算至少部分地在计算机系统上执行的原始图像的偏斜角的方法将原始图像的图像数据存储在电子存储器中，然后根据图像特征的相对对比度幅度形成能量标准化图像 所存储的图像数据内的多个局部图像区域中的每一个。 通过将能量标准化图像分割成多个子区域来形成分割图像。 求和区域形成为来自子区域的图像像素数据的组合。 通过在求和区域上执行傅里叶变换来获得傅里叶幅度谱。 根据通过沿着恒定径向角度的多条线中的每一条积分傅立叶幅度谱形成的径向线积分函数的峰值来计算偏斜角。 输出信号表示计算出的偏斜角。

    Method of image compensation for watermarked film
    9.
    发明授权
    Method of image compensation for watermarked film 失效
    水印胶片图像补偿方法

    公开(公告)号：US06917758B1

    公开(公告)日：2005-07-12

    申请号：US10742167

    申请日：2003-12-19

    申请人： Robert J. Zolla ,  Paul W. Jones

    发明人： Robert J. Zolla ,  Paul W. Jones

    IPC分类号： G06T1/00 ,  G03B41/00 ,  G03C7/00

    CPC分类号： G06T1/0028

    摘要： A method for obtaining an adjusted digital image which is compensated for a watermark exposure is described comprising: determining a first sensitometric response of a photographic media without a watermark exposure; determining a second sensitometric response of the photographic media with a watermark exposure; generating a look-up table (LUT) from the first and second sensitometric responses; and modifying a digital representation of an image which is to be printed onto the photographic media in accordance with the look-up table to produce an adjusted digital image. The adjusted digital image may be printed directly onto a final print photographic film that receives a watermark exposure, or may be printed onto a printing negative photographic film to produce a printing negative with an adjusted image, which adjusted image is then printed onto a final print photographic film that receives a watermark exposure. In another embodiment, the characteristic response of a digital film printer may be modified in accordance with a LUT generated from the first and second sensitometric responses, instead of modifying the digital representation of the image which is to be printed onto the photographic media.

    摘要翻译： 描述了一种用于获得补偿水印曝光的经调整的数字图像的方法，包括：确定没有水印曝光的照相介质的第一感光度响应; 使用水印曝光确定所述照相介质的第二感光度响应; 从所述第一和第二感光度响应生成查找表（LUT）; 以及根据查找表修改要打印到照相介质上的图像的数字表示，以产生经调整的数字图像。 调整后的数字图像可以直接打印到接收水印曝光的最终打印摄影胶片上，或者可以打印到打印负片照相胶片上以产生具有调整图像的印刷负片，然后将经调整的图像印刷到最终印刷品上 摄影胶片接收水印曝光。 在另一个实施例中，可以根据从第一和第二感光度响应产生的LUT来修改数字胶片打印机的特征响应，而不是修改要打印到照相介质上的图像的数字表示。