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    • 3. 发明授权
    • Noise reduction in color digital images using pyramid decomposition
    • 彩色数字图像使用金字塔分解降噪
    • US07257271B2
    • 2007-08-14
    • US10738658
    • 2003-12-17
    • James E. Adams, Jr.John F. Hamilton, Jr.Frances C. Williams
    • James E. Adams, Jr.John F. Hamilton, Jr.Frances C. Williams
    • G06K9/40
    • G06T5/002G06T2207/10024G06T2207/20016
    • A method of removing noise from a color digital image, including receiving an original color digital image including a plurality of pixels represented in a primary-color space; producing at least one residual digital image and at least one base digital image from the original color digital image, the base digital image having a lower spatial resolution then the original color digital image; producing a noise reduced base digital image by removing noise from the residual image and the base digital image with a noise reduction filter and combining the noise reduced base digital image with the noise reduced residual image to produce a reconstructed digital image having reduced noise; transforming the reconstructed digital image into a luminance-chrominance color space; repeating the above process to produce a reconstructed luminance-chrominance digital image; and transforming the reconstructed luminance-chrominance digital image into a noise reduced digital image in the original primary color space.
    • 一种从彩色数字图像中去除噪声的方法,包括接收包括在原色空间中表示的多个像素的原始彩色数字图像; 从原始彩色数字图像产生至少一个残留数字图像和至少一个基本数字图像,基本数字图像具有较低的空间分辨率,然后是原始彩色数字图像; 通过利用降噪滤波器从残留图像和基本数字图像中去除噪声来产生噪声降低的基本数字图像,并将噪声降低的基本数字图像与噪声减小的残余图像组合以产生具有降低的噪声的重建数字图像; 将重建的数字图像变换为亮度色度色彩空间; 重复上述过程以产生重建的亮度色度数字图像; 并将重建的亮度色度数字图像变换成原始原色空间中的降噪数字图像。