公开(公告)号：US20180184028A1

公开(公告)日：2018-06-28

申请号：US15739556

申请日：2016-06-10

Applicant: ULIS

Inventor： Amaury SARAGAGLIA ,  Alain DURAND

IPC: H04N5/367 ,  H04N5/33 ,  H04N5/365

CPC classification number: H04N5/3675 ,  H04N5/33 ,  H04N5/3651 ,  H04N5/3653

Abstract: The invention relates to a method for detecting bad pixels from a pixel array of a device, for capturing an image, that is sensitive to infrared radiation. The method includes: receiving an input image captured by the pixel system, and calculating a score for a plurality of target pixels including at least some of the pixels from the input image. The score for each target pixel is generated on the basis of k pixels of the input image that are selected in a window of H by H pixels around the target pixel. H is an odd integer greater than or equal to 3, and k is an integer between 2 and 5. Each pixel, from the set formed of the k pixels and the target pixel, share at least one border or corner with another pixel from said set, and the values of the k pixels are at respective distances from the value of the target pixel, the k pixels being selected on the basis of the k distances. The method also includes detecting that at least one of the target pixels is a bad pixel on the basis of the calculated scores.

公开(公告)号：US20150319387A1

公开(公告)日：2015-11-05

申请号：US14695539

申请日：2015-04-24

Applicant: ULIS

Inventor： Amaury SARAGAGLIA ,  Alain DURAND

IPC: H04N5/365 ,  H04N3/09 ,  H04N5/33

CPC classification number: H04N5/3651 ,  G01J1/44 ,  G01J5/22 ,  G01J5/24 ,  G01J2001/444 ,  H04N3/09 ,  H04N5/33 ,  H04N5/365 ,  H04N5/3656

Abstract: The invention concerns a method of image processing involving: receiving, by a processing device, an input image (IB) captured by a pixel array sensitive to infrared radiation; determining, based on the input image and on a column component vector (VCOL), a first scale factor (α) by estimating a level of the column spread present in the input image; generating column offset values (α.VCOL(y)) based on the product of the first scale factor with the values of the vector; determining, based on the input image and on a 2D dispersion matrix (IDISP), a second scale factor (β) by estimating a level of the 2D dispersion present in the input image; generating pixel offset values (β.IDISP(x,y)) based on the product of the second scale factor with the values of the matrix; and generating a corrected image (IC′) by applying the column and pixel offset values.

Abstract translation: 本发明涉及一种图像处理方法，涉及：由处理装置接收由对红外线辐射敏感的像素阵列捕获的输入图像（IB）; 基于输入图像和列分量向量（VCOL），通过估计输入图像中存在的列扩展的级别来确定第一比例因子（α）; 基于第一比例因子与矢量的值的乘积生成列偏移值（α.VCOL（y））; 通过估计输入图像中存在的2D色散的水平，基于输入图像和2D色散矩阵（IDISP）来确定第二比例因子（＆bgr;）; 基于第二比例因子与矩阵的值的乘积产生像素偏移值（＆bgr; .IDISP（x，y））; 以及通过应用列和像素偏移值来生成校正图像（IC'）。