公开(公告)号：US20120063679A1

公开(公告)日：2012-03-15

申请号：US12882819

申请日：2010-09-15

申请人： Florin Cutzu ,  Sumit Chawla ,  Ted Cooper ,  Robert A. Williams

发明人： Florin Cutzu ,  Sumit Chawla ,  Ted Cooper ,  Robert A. Williams

IPC分类号： G06K9/00

CPC分类号： G06T7/90

摘要： A method for identifying singleton outlier pixels in a selected color space in a digital image including a plurality of pixels, includes for each 3×3 patch of pixels in the image, calculating the diameter of the 3×3 patch of pixels. For each pixel in the patch, the distance to its nearest neighbor pixel within the patch is computed, as measured in the selected color space. The computed distance from each pixel in the patch is compared to its nearest neighbor with a threshold that is a preselected fraction of the diameter. A center pixel in the patch is identified as an outlier pixel if its calculated distance to its nearest neighbor is the largest distance to a nearest neighbor and exceeds the threshold.

摘要翻译： 在包括多个像素的数字图像中，在所选择的颜色空间中识别单例异常值像素的方法包括：对于图像中的每个3×3个像素块，计算3×3像素块的直径。 对于补丁中的每个像素，如在所选择的颜色空间中测量的那样，计算补片内与其最近相邻像素的距离。 将来自贴片中每个像素的计算距离与其最接近的相邻值进行比较，其阈值是预定的直径分数。 如果其到其最近邻居的计算距离是与最近邻居的最大距离并且超过阈值，则将该补丁中的中心像素识别为异常值像素。

公开(公告)号：US09049334B1

公开(公告)日：2015-06-02

申请号：US13405195

申请日：2012-02-24

申请人： Florin Cutzu ,  Sumit Chawla

发明人： Florin Cutzu ,  Sumit Chawla

IPC分类号： H04N9/68 ,  H04N9/083

CPC分类号： H04N9/083 ,  H04N9/64

摘要： A method for chroma denoising a digital image created in a digital camera includes decomposing the digital image into a plurality of spatial frequency bands. A separate modified color correction matrix is calculated from a color correction matrix associated with the camera for each of the plurality of spatial frequency bands. Each modified color correction matrix is applied to data in its corresponding spatial frequency band to produce color-corrected data in the plurality of spatial frequency bands. The color-corrected data in plurality of spatial frequency bands is combined to produce an output image.

摘要翻译： 用于色数去除在数字照相机中创建的数字图像的方法包括将数字图像分解成多个空间频带。 对于多个空间频带中的每一个，从与相机相关联的颜色校正矩阵计算单独的修改颜色校正矩阵。 将每个修改的颜色校正矩阵应用于其对应的空间频带中的数据，以在多个空间频带中产生色彩校正的数据。 多个空间频带中的色彩校正数据被组合以产生输出图像。

公开(公告)号：US08559730B2

公开(公告)日：2013-10-15

申请号：US12882819

申请日：2010-09-15

申请人： Florin Cutzu ,  Sumit Chawla ,  Ted Cooper ,  Robert A. Williams

发明人： Florin Cutzu ,  Sumit Chawla ,  Ted Cooper ,  Robert A. Williams

IPC分类号： G06K9/56

CPC分类号： G06T7/90

摘要： A method for identifying singleton outlier pixels in a selected color space in a digital image including a plurality of pixels, includes for each 3×3 patch of pixels in the image, calculating the diameter of the 3×3 patch of pixels. For each pixel in the patch, the distance to its nearest neighbor pixel within the patch is computed, as measured in the selected color space. The computed distance from each pixel in the patch is compared to its nearest neighbor with a threshold that is a preselected fraction of the diameter. A center pixel in the patch is identified as an outlier pixel if its calculated distance to its nearest neighbor is the largest distance to a nearest neighbor and exceeds the threshold.

摘要翻译： 在包括多个像素的数字图像中，在所选择的颜色空间中识别单例异常值像素的方法包括：对于图像中的每个3×3个像素块，计算3×3像素块的直径。 对于补丁中的每个像素，如在所选择的颜色空间中测量的那样，计算补片内与其最近相邻像素的距离。 将来自贴片中每个像素的计算距离与其最接近的相邻值进行比较，其阈值是预定的直径分数。 如果其到其最近邻居的计算距离是与最近邻居的最大距离并且超过阈值，则将该补丁中的中心像素识别为异常值像素。