公开(公告)号：US08666162B1

公开(公告)日：2014-03-04

申请号：US13330553

申请日：2011-12-19

申请人： David Vakrat

发明人： David Vakrat

IPC分类号： G06K9/00

CPC分类号： G06T3/4015

摘要： A system, method, and computer program product for improving digital images and video by reducing or eliminating artifacts created by sensor binning, i.e. channel displacement of downscaled image pixels. Red and blue pixels are shifted to corresponding ideal pixel locations using for example bi-linear interpolation for each color. Green pixels are shifted to corresponding ideal pixel locations using one-dimensional cubic interpolation along a diagonal direction in which the green pixels are aligned. Pixel values are replaced by weighted pixel value averages of groups of pixels, preferably four, and the weights used vary inversely with shifted distances. Cubic interpolation results may be separately weighted pairwise among pixels with a weighting parameter favoring pixels near the ideal pixel location. The embodiments noticeably improve image and video quality, particularly by treatment of jagged edges of diagonal image features without compromising image sharpness or creating false colors along edges.

摘要翻译： 一种用于通过减少或消除由传感器合并产生的伪影即减小的图像像素的通道位移来改善数字图像和视频的系统，方法和计算机程序产品。 使用例如每种颜色的双线性插值将红色和蓝色像素移动到相应的理想像素位置。 绿色像素沿着沿着绿色像素排列的对角线方向的一维三次插值移位到相应的理想像素位置。 像素值由像素组的加权像素值平均值代替，优选地为四个，并且所使用的权重与偏移的距离成反比。 可以在具有有利于理想像素位置附近的像素的加权参数的像素之间成对地单独加权立方插值结果。 这些实施例明显地改善图像和视频质量，特别是通过处理对角图像特征的锯齿状边缘而不损害图像清晰度或沿边缘产生伪色。

公开(公告)号：US08102444B2

公开(公告)日：2012-01-24

申请号：US12554106

申请日：2009-09-04

申请人： David Vakrat ,  Noam Korem

发明人： David Vakrat ,  Noam Korem

IPC分类号： H04N9/64 ,  H04N5/16

CPC分类号： H04N1/407 ,  H04N5/361

摘要： Techniques for implementing a Black Level Correction (BLC) processing operation on image data signal pixel values that results in little to no nonlinearity in the dark areas of the image due to black noise clipping, and avoids reducing image quality or adding cost, are provided. Image data signal pixel values are caused to maintain black level while being operated on by image data signal processor circuits that precede a Noise Reduction (NR) processing operation, thus allowing the BLC processing operation to be executed after the NR processing operation. With black noise mostly removed, little to no nonlinearity in the dark areas of the image due to black noise clipping results from the BLC processing operation.

摘要翻译： 提供了一种用于对图像数据信号进行黑色电平校正（BLC）处理操作的技术，这些像素值由于黑噪声限幅而导致图像暗区几乎没有非线性，并且避免了降低图像质量或增加成本。 使图像数据信号像素值在由降噪（NR）处理操作之前的图像数据信号处理器电路操作的同时维持黑电平，从而允许在NR处理操作之后执行BLC处理操作。 黑色噪声大多被去除，由于BLC处理操作的黑噪声削波结果，图像暗区几乎没有非线性。

公开(公告)号：US20100231764A1

公开(公告)日：2010-09-16

申请号：US12554106

申请日：2009-09-04

申请人： David Vakrat ,  Noam Korem

发明人： David Vakrat ,  Noam Korem

IPC分类号： H04N9/64

CPC分类号： H04N1/407 ,  H04N5/361

摘要： Techniques for implementing a Black Level Correction (BLC) processing operation on image data signal pixel values that results in little to no nonlinearity in the dark areas of the image due to black noise clipping, and avoids reducing image quality or adding cost, are provided. Image data signal pixel values are caused to maintain black level while being operated on by image data signal processor circuits that precede a Noise Reduction (NR) processing operation, thus allowing the BLC processing operation to be executed after the NR processing operation. With black noise mostly removed, little to no nonlinearity in the dark areas of the image due to black noise clipping results from the BLC processing operation.

摘要翻译： 提供了一种用于对图像数据信号进行黑色电平校正（BLC）处理操作的技术，这些像素值由于黑噪声限幅而导致图像暗区几乎没有非线性，并且避免了降低图像质量或增加成本。 使图像数据信号像素值在由降噪（NR）处理操作之前的图像数据信号处理器电路操作的同时维持黑电平，从而允许在NR处理操作之后执行BLC处理操作。 黑色噪声大多被去除，由于BLC处理操作的黑噪声削波结果，图像暗区几乎没有非线性。