System using one or more residual image(s) to represent an extended color gamut digital image
    11.
    发明授权
    System using one or more residual image(s) to represent an extended color gamut digital image 有权
    使用一个或多个残留图像来表示扩展色域数字图像的系统

    公开(公告)号:US06282312B1

    公开(公告)日:2001-08-28

    申请号:US09162201

    申请日:1998-09-28

    IPC分类号: G06K900

    摘要: A digital image processing system includes one or more opto-electronic image digitization device(s) which digitize still photographic images and produce an extended color gamut digital image corresponding to each still photographic image, and an image processing unit, coupled with said image digitization device(s), which is operative to receive a plurality of extended color gamut digital images from the image digitization device(s). The image processing unit produces at least one limited color gamut digital image from each said extended color gamut digital image by adjusting the color values of the extended color gamut digital image to fit within a limited color gamut; represents each said limited color gamut digital image in a storage color space; determines one or more residual image(s) each representing a difference between one said extended color gamut digital image and its corresponding limited color gamut digital image; and associates each limited color gamut digital image in the storage color space with its residual image(s) such that the associated residual images and the limited color gamut digital images in the storage color space are adapted to be used to reconstruct extended color gamut digital images.

    摘要翻译: 数字图像处理系统包括一个或多个光电图像数字化装置,其将静止照相图像数字化并产生对应于每个静止摄影图像的扩展色域数字图像,以及图像处理单元,与所述图像数字化装置 其可操作以从图像数字化设备接收多个扩展色域数字图像。 图像处理单元通过调整扩展色域数字图像的颜色值以适应有限的色域,从每个所述扩展色域数字图像产生至少一个有限色域数字图像; 表示存储颜色空间中的每个所述有限色域数字图像; 确定每个表示一个所述扩展色域数字图像与其对应的有限色域数字图像之间的差的一个或多个残留图像; 并且将存储颜色空间中的每个有限色域数字图像与其残留图像相关联,使得相关联的残留图像和存储颜色空间中的有限色域数字图像适于用于重建扩展色域数字图像 。

    Method for characterizing a response function of an output
    12.
    发明授权
    Method for characterizing a response function of an output 失效
    表征输出设备的响应功能的方法

    公开(公告)号:US6130756A

    公开(公告)日:2000-10-10

    申请号:US41206

    申请日:1998-03-12

    CPC分类号: H04N1/6033

    摘要: A method for characterizing a response function of an output device, the method comprises the steps of producing a test image on the output device with a set of one or more test patches having known code values; obtaining one or more captured images of the test image using a digital camera; determining colorimetric values for each of the test patches in the captured images using a known response function of the digital camera; and determining a response function of the output device which relates the known code values to the determined colorimetric values.

    摘要翻译: 一种用于表征输出设备的响应功能的方法,所述方法包括以下步骤:在输出设备上产生具有已知代码值的一组或多个测试片的集合; 使用数字照相机获得测试图像的一个或多个拍摄图像; 使用所述数字照相机的已知响应函数来确定所捕获的图像中的每个测试片的色度值; 以及确定所述输出设备的响应函数,其将所述已知代码值与确定的比色值相关联。

    Method for segmenting a digital image into a foreground region and a key
color region
    13.
    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 for printer calibration
    14.
    发明授权
    Method for printer calibration 失效
    打印机校准方法

    公开(公告)号:US5995714A

    公开(公告)日:1999-11-30

    申请号:US602409

    申请日:1996-02-16

    IPC分类号: H04N1/60 H04N1/46 G06F15/00

    CPC分类号: H04N1/6033

    摘要: A method is disclosed for calibrating a digital printer to provide a substantially aim printer response. A test target is processed through a set of potential calibration functions to form a set of processed test targets and the set of processed test targets is printed using the digital printer. Thereafter, the printer response for each of the potential calibration functions is evaluated by visually examining the printed set of processed test targets. The potential calibration function that best matches a visual criterion is then selected.

    摘要翻译: 公开了一种用于校准数字打印机以提供基本上瞄准打印机响应的方法。 通过一组潜在的校准功能处理测试目标,以形成一组经过处理的测试目标,并使用数字打印机打印一组已处理的测试目标。 此后,通过目视检查打印的经处理的测试目标集来评估每个潜在校准功能的打印机响应。 然后选择最佳匹配视觉标准的潜在校准函数。

    Dye sets for thermal imaging having improved color gamut
    15.
    发明授权
    Dye sets for thermal imaging having improved color gamut 失效
    用于热成像的染料组具有改善的色域

    公开(公告)号:US5795844A

    公开(公告)日:1998-08-18

    申请号:US808289

    申请日:1997-02-28

    摘要: A multicolor dye-donor element for thermal dye transfer capable of producing improved color gamut comprising a support having thereon a set of sequential repeating dye patches of yellow, magenta and cyan image dyes dispersed in a polymeric binder, the element also having at least one additional dye patch comprising a dye dispersed in a polymeric binder, the dye of each such additional dye patch which, when transferred to a dye image-receiving layer before or after transfer of the original yellow, magenta and cyan image dyes, has a hue measured at its maximum density which is outside the color gamut defined by the hues of the original transferred yellow, magenta and cyan image dyes by more than 5 CIELAB .DELTA.E.sub.c units.

    摘要翻译: 一种用于热染料转移的多色染料供体元件,其能够产生改进的色域,其包含其上具有分散在聚合物粘合剂中的一组连续重复的黄色,品红色和青色影像染料的重复染料斑块的载体,所述元件还具有至少一种额外的 染料贴片包含分散在聚合物粘合剂中的染料,每种这样的附加染料贴片的染料,当在原始的黄色,品红色和青色图像染料转移之前或之后转移到染料影像接收层时,具有在 其最大密度在由原始转移的黄色,品红色和青色图像染料的色调所限定的色域之外,超过5个CIELAB DELTA Ec单位。

    Reducing ink bleed artifacts for RGB images
    17.
    发明授权
    Reducing ink bleed artifacts for RGB images 有权
    减少RGB图像的墨水泄漏伪影

    公开(公告)号:US08422082B2

    公开(公告)日:2013-04-16

    申请号:US12507226

    申请日:2009-07-22

    IPC分类号: H04N1/407

    CPC分类号: H04N1/6022

    摘要: A method for modifying an input digital image having three color channels, to form a modified digital image suitable for use by an inkjet printer having reduced ink bleed artifacts comprising computing a transformed digital image containing at least a black color channel and a color dependent scale factor channel, computing a filtered black color channel using a convolution operation, and forming the modified digital image in response to the corresponding pixel values of the color dependent scale factor channel and the filtered black color channel, so that when the modified digital image is used to produce a printed image on an inkjet printer there are reduced ink bleed artifacts.

    摘要翻译: 一种用于修改具有三个颜色通道的输入数字图像的方法,以形成适于由具有减少的墨水泄漏伪影的喷墨打印机使用的修改的数字图像,包括计算至少包含黑色通道和颜色依赖比例因子的变换数字图像 使用卷积运算来计算滤波后的黑色频道,以及响应于色彩依赖比例因子信道和滤波黑色频道的相应像素值形成修改后的数字图像,使得当修改后的数字图像被用于 在喷墨打印机上产生印刷图像有减少的渗墨伪影。

    Multi-level halftoning providing reduced error diffusion artifacts
    18.
    发明授权
    Multi-level halftoning providing reduced error diffusion artifacts 有权
    多级半色调提供减少的误差扩散伪像

    公开(公告)号:US08018623B2

    公开(公告)日:2011-09-13

    申请号:US12040055

    申请日:2008-02-29

    IPC分类号: G06K15/00

    CPC分类号: H04N1/40087 H04N1/4053

    摘要: A method for multi-level error diffusion halftoning an input digital image to form an output digital image with reduced error diffusion texture contouring artifacts which includes modifying the input pixel values for a fraction of the input pixels using a periodic dither signal, where the fraction is a function of the texture artifact characteristics of the multi-level error diffusion halftoning process.

    摘要翻译: 一种用于多级误差扩散的方法,用于对输入数字图像进行半色调以形成具有减小的误差扩散纹理轮廓伪迹的输出数字图像,其包括使用周期性抖动信号修改输入像素的一部分输入像素值,其中分数为 多级错误扩散半色调处理的纹理伪影特征的函数。