Method for computing a control signal for combining digital images
    1.
    发明授权
    Method for computing a control signal for combining digital images 失效
    用于计算用于组合数字图像的控制信号的方法

    公开(公告)号:US5986771A

    公开(公告)日:1999-11-16

    申请号:US934372

    申请日:1997-09-19

    IPC分类号: H04N1/62 H04N1/40

    CPC分类号: H04N1/62

    摘要: A method for determining a control signal for use in combining a first digital image that includes both a foreground region and a key color region having an associated key color with a second background digital image, both images including pixels having color values is disclosed. The method includes segmenting the first digital image into a foreground region and a key color region; and identifying transition region pixels in the first digital image that are in the vicinity of a boundary between the segmented foreground region and the segmented key color region. The method further includes computing a color difference signal between the color values of the first digital image and the key color for at least some pixels in the transition region; and computing a control signal for transition region pixels as a function of the color difference signal, where the control signal is to be used to combine the foreground region of the first digital image with the second background digital image.

    摘要翻译: 公开了一种用于确定控制信号的方法,用于将包括前景区域和具有相关联的键颜色的键颜色区域的第一数字图像与第二背景数字图像组合在一起,包括具有颜色值的像素的两个图像。 该方法包括将第一数字图像分割成前景区域和键颜色区域; 以及识别在所述第一数字图像中处于所述分割的前景区域和所述分割的键颜色区域之间的边界附近的过渡区域像素。 该方法还包括计算过渡区域中的至少一些像素的第一数字图像的颜色值和键颜色之间的色差信号; 以及计算作为所述色差信号的函数的过渡区域像素的控制信号,其中所述控制信号将用于将所述第一数字图像的前景区域与所述第二背景数字图像组合。

    Combining a first digital image and a second background digital image
using a key color control signal and a spatial control signal
    2.
    发明授权
    Combining a first digital image and a second background digital image using a key color control signal and a spatial control signal 失效
    使用键颜色控制信号和空间控制信号组合第一数字图像和第二背景数字图像

    公开(公告)号:US5937104A

    公开(公告)日:1999-08-10

    申请号:US934178

    申请日:1997-09-19

    IPC分类号: G06T13/00 H04N9/75 G06K15/316

    CPC分类号: H04N9/75

    摘要: A method for combining a first digital image and a second background digital image, both images including pixels having color values, wherein the first digital image includes both a foreground region having foreground color values and a key color region characterized by a key color, as well as a mixed region where the pixel color values are a mixture of the foreground color value and the key color, includes determining a first control signal that indicates the relative proportions of the foreground color value and the key color for pixels in the first digital image; and segmenting the first digital image into a key color region and a non-key color region in which the non-key color region includes pixels in the first digital image that are not in the key color region. The method also includes determining a second control signal that indicates a spatial distance between the pixels in the first digital image and a boundary between the key color region and the non-key color region; and combining the first digital image and the second background digital image in response to the first and second control signals, the key color, and an illuminant color value.

    摘要翻译: 一种用于组合第一数字图像和第二背景数字图像的方法,包括具有颜色值的像素的两个图像,其中所述第一数字图像包括具有前景色值的前景区域和由键颜色表征的键颜色区域 作为像素颜色值是前景颜色值和键颜色的混合的混合区域,包括确定表示第一数字图像中的像素的前景色值和键颜色的相对比例的第一控制信号; 以及将所述第一数字图像分割成其中所述非键颜色区域包括所述第一数字图像中不在所述键颜色区域中的像素的键颜色区域和非键颜色区域。 该方法还包括确定指示第一数字图像中的像素与键颜色区域和非键颜色区域之间的边界之间的空间距离的第二控制信号; 以及响应于第一和第二控制信号,键颜色和光源颜色值来组合第一数字图像和第二背景数字图像。

    Method for segmenting a digital image into a foreground region and a key
color region
    3.
    发明授权
    Method for segmenting a digital image into a foreground region and a key color region 失效
    将数字图像分割成前景区域和键颜色区域的方法

    公开(公告)号:US6011595A

    公开(公告)日:2000-01-04

    申请号:US934373

    申请日:1997-09-19

    IPC分类号: H04N9/75

    CPC分类号: H04N9/75

    摘要: A method for segmenting a digital image into a foreground region and a key color region including characterizing a distribution of key color values; using the distribution of key color values to produce a multi-dimensional look-up-table having three or more dimensions indexed by color values in a selected color space to define a key color volume; addressing the multi-dimensional look-up table with color values of pixels in the digital image to determine whether the color values of such pixels are within the key color volume; and labeling pixels in the digital image whose color values fall within the key color volume to be within the key color region and labeling all other pixels to be within the foreground region whereby the digital image is segmented into the foreground region and the key color region.

    摘要翻译: 一种用于将数字图像分割成前景区域和键颜色区域的方法,包括表征键颜色值的分布; 使用键颜色值的分布来产生具有由所选颜色空间中的颜色值索引的三维或更多维度的多维查找表,以定义键颜色体积; 用数字图像中的像素的颜色值寻址多维查找表,以确定这些像素的颜色值是否在关键颜色体积内; 并且将其颜色值落在键颜色体积内的数字图像中的像素标记为在关键颜色区域内,并将所有其他像素标记在前景区域内,由此数字图像被分割成前景区域和键颜色区域。

    Method and system of individualizing tone-reproduction curves calibration and applying thereof

    公开(公告)号:US07142332B2

    公开(公告)日:2006-11-28

    申请号:US09750597

    申请日:2000-12-28

    IPC分类号: H04N1/40

    CPC分类号: H04N1/407 H04N5/202

    摘要: A method and system updates individualized calibrated tone-reproduction curves. A plurality of predetermined stored calibrated tone-reproduction curves are used, each predetermined stored calibrated tone-reproduction curve corresponding to a distinct media type and halftone type combination along with a plurality of predetermined relationships between each stored calibrated tone-reproduction curve and a reference media type and reference halftone type combination. A new tone-reproduction curve corresponding to a reference media type and reference halftone type combination calibration operation is generated, and each predetermined stored calibrated tone-reproduction curves based on the newly generated tone-reproduction curve corresponding to the reference media type and reference halftone type combination and the plurality of predetermined relationships between each stored calibrated tone-reproduction curve and the reference media type and reference halftone type combination is updated. The TRCs can be applied upon a page basis. Moreover, generated TRCs can be mapped to existing TRCs to save memory.

    Method and system of individualizing tone-reproduction curves calibration and applying thereof

    公开(公告)号:US06999199B2

    公开(公告)日:2006-02-14

    申请号:US09750607

    申请日:2000-12-28

    IPC分类号: H04N1/405

    摘要: A method and system updates individualized calibrated tone-reproduction curves. A plurality of predetermined stored calibrated tone-reproduction curves are used, each predetermined stored calibrated tone-reproduction curve corresponding to a distinct media type and halftone type combination along with a plurality of predetermined relationships between each stored calibrated tone-reproduction curve and a reference media type and reference halftone type combination. A new tone-reproduction curve corresponding to a reference media type and reference halftone type combination calibration operation is generated, and each predetermined stored calibrated tone-reproduction curves based on the newly generated tone-reproduction curve corresponding to the reference media type and reference halftone type combination and the plurality of predetermined relationships between each stored calibrated tone-reproduction curve and the reference media type and reference halftone type combination is updated. The TRCs can be applied upon a page basis. Moreover, generated TRCs can be mapped to existing TRCs to save memory.

    Method and system of individualizing tone-reproduction curves calibration and applying thereof
    8.
    发明授权
    Method and system of individualizing tone-reproduction curves calibration and applying thereof 有权
    个性化色调再现曲线校准及其应用的方法和系统

    公开(公告)号:US06906828B2

    公开(公告)日:2005-06-14

    申请号:US09750598

    申请日:2000-12-28

    IPC分类号: H04N1/407 H04N5/202 H04N1/40

    CPC分类号: H04N1/407 H04N5/202

    摘要: A method and system updates individualized calibrated tone-reproduction curves. A plurality of predetermined stored calibrated tone-reproduction curves are used, each predetermined stored calibrated tone-reproduction curve corresponding to a distinct media type and halftone type combination along with a plurality of predetermined relationships between each stored calibrated tone-reproduction curve and a reference media type and reference halftone type combination. A new tone-reproduction curve corresponding to a reference media type and reference halftone type combination calibration operation is generated, and each predetermined stored calibrated tone-reproduction curves based on the newly generated tone-reproduction curve corresponding to the reference media type and reference halftone type combination and the plurality of predetermined relationships between each stored calibrated tone-reproduction curve and the reference media type and reference halftone type combination is updated. The TRCs can be applied upon a page basis. Moreover, generated TRCs can be mapped to existing TRCs to save memory.

    摘要翻译: 一种方法和系统更新个性化的校准色调再现曲线。 使用多个预定存储的校准色调再现曲线,每个预定存储的校准色调再现曲线对应于不同的媒体类型和半色调类型组合以及每个存储的校准色调再现曲线和参考媒体之间的多个预定关系 类型和参考半色调类型组合。 产生对应于参考媒体类型和参考半色调类型组合校准操作的新的色调再现曲线,并且基于对应于参考媒体类型和参考半色调类型的新产生的色调再现曲线,每个预定存储的校准色调再现曲线 组合,并且更新每个存储的校准色调再现曲线和参考媒体类型和参考半色调类型组合之间的多个预定关系。 TRC可以基于页面应用。 此外,生成的TRC可以映射到现有的TRC以节​​省内存。