公开(公告)号：US07620211B2

公开(公告)日：2009-11-17

申请号：US10549781

申请日：2004-04-07

申请人： Richard Walker Browne ,  Robert V. Canning, Jr. ,  Michael H. Evans ,  Robert William Johnson ,  Barry Rubin ,  Douglas Ray Stilwell

发明人： Richard Walker Browne ,  Robert V. Canning, Jr. ,  Michael H. Evans ,  Robert William Johnson ,  Barry Rubin ,  Douglas Ray Stilwell

IPC分类号： G06K9/00 ,  G01N21/00

CPC分类号： H04N1/4095 ,  G01N21/59 ,  G01N2021/8663 ,  H04N1/00005 ,  H04N1/00034 ,  H04N1/00045 ,  H04N1/00047 ,  H04N1/0005 ,  H04N1/00068

摘要： An image analysis method to quantify visual showthrough of printed images on the reverse face of planar objects, such as paper. An illumination level is set using a white reference object. A white reference image is stored in a computer memory. An image of a planar object having a printed image on the reverse face is stored in a computer memory. A pixel by pixel ratio of the two images is calculated and a mean value of the ratios is calculated to characterize the visual showthrough. The measurements are substantially independent of both the illumination level and image shading.

摘要翻译： 一种图像分析方法，用于量化平面物体（如纸张）反面上的打印图像的视觉显示。 使用白色参考对象设置照明级别。 白色参考图像存储在计算机存储器中。 具有背面印刷图像的平面物体的图像被存储在计算机存储器中。 计算两个图像的像素比例，并且计算比率的平均值以表征视觉显示。 测量值基本上与照明水平和图像阴影无关。