公开(公告)号：US20150220821A1

公开(公告)日：2015-08-06

申请号：US14610740

申请日：2015-01-30

Applicant: OCE-TECHNOLOGIES B.V.

Inventor： Teun R. BAAR ,  Marjan SHAHPASKI ,  Maria V. ORTIZ SEGOVIA

IPC: G06K15/02 ,  B05D5/06 ,  H04N1/60

CPC classification number: G06K15/1878 ,  B05D5/06 ,  B41M3/00 ,  G06K15/027 ,  H04N1/60 ,  H04N1/605

Abstract: A method is provided for combining two source images in a relief image with structural elements having at least two principle surface orientations, such that a first image is observed in a first viewing direction and a second image is observed in a second viewing direction. The method reduces a ghosting effect and comprises the steps of: a) printing a test relief image comprising patches with structural elements having a first basic color on a surface with a first principle orientation and a second basic color on a surface with a second principle orientation, a basic color being a color having a predefined amount of colorant; b) measuring for each patch a first observed color in a first viewing direction and a second observed color in a second viewing direction; c) scaling a first source image and a second source image such that each image element has a size corresponding to a structural element in the relief image; d) selecting for each position in the relief image a structural element from a patch in the test relief image, wherefor a sum of a color difference between an image element of the scaled first source image and a first observed color and a color difference between an image element of the scaled second source image and a second observed color becomes minimal, and e) composing a relief image from the selected structural elements.

Abstract translation: 提供了一种用于将浮雕图像中的两个源图像与具有至少两个主要表面取向的结构元件组合的方法，使得在第一观察方向观察第一图像，并且在第二观察方向上观察到第二图像。 该方法减少了重影效果，并且包括以下步骤：a）在具有第二原理取向的表面上以第一原理取向和第二基色打印包括具有第一基本颜色的结构元件的补片的测试浮雕图像， ，基本颜色是具有预定量的着色剂的颜色; b）测量每个贴片在第一观察方向上测量第一观察颜色，并在第二观察方向上测量第二观察颜色; c）缩放第一源图像和第二源图像，使得每个图像元素具有与浮雕图像中的结构元素相对应的尺寸; d）从浮雕图像中的贴片中选择一个结构元素，从而将缩放的第一源图像的图像元素与第一观察到的颜色之间的色差和 缩放的第二源图像的图像元素和第二观察到的颜色变得最小，以及e）从所选择的结构元素构成浮雕图像。