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    • 7. 发明申请
    • Constructing extended color gamut digital images from limited color gamut digital images
    • 从有限色域数字图像构建扩展色域数字图像
    • US20050152597A1
    • 2005-07-14
    • US10757048
    • 2004-01-14
    • Kevin SpauldingAndrew GallagherEdward GindeleRaymond Ptucha
    • Kevin SpauldingAndrew GallagherEdward GindeleRaymond Ptucha
    • B41B1/00G06K9/00H04N1/60
    • H04N1/6058
    • A method for reconstructing an extended color gamut digital image from a limited color gamut digital image includes transforming the limited color gamut digital image in the particular limited color gamut color space to a reference color space forming a limited color gamut digital image in a reference color space; providing a modified inverse color adjustment function which, when such function operates on the limited color gamut digital image in the reference color space, produces the reconstructed extended color gamut digital image having reduced highlight color saturation for highlight color values when compared with corresponding color values of the initial extended color gamut image; and operating on the limited color gamut digital image in the reference color space with the modified inverse color adjustment function to form the reconstructed extended color gamut digital image having reduced levels of color contouring and quantization artifacts.
    • 用于从有限色域数字图像重建扩展色域数字图像的方法包括将特定有限色域颜色空间中的有限色域数字图像变换为在参考色彩空间中形成有限色域数字图像的参考颜色空间 ; 提供修改的反色调整功能,当这种功能对参考色彩空间中的有限色域数字图像进行操作时,产生具有降低的高亮度色彩饱和度的重构的扩展色域数字图像, 初始扩展色域图像; 并且利用修改的反色调整功能在参考颜色空间中的有限色域数字图像上进行操作,以形成具有降低的颜色轮廓和量化伪像水平的重建的扩展色域数字图像。