Blar i NTNU Open på forfatter "Eschbach, Reiner"
-
Data Hiding by White Modulation in Color Direct Binary Search Halftones
Kitanovski, Vlado; Eschbach, Reiner; Pedersen, Marius; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2017)In this article, the authors propose a method for hiding a visual watermark in color printed images with arbitrary, natural content. The embedded watermark is imperceptible under normal illumination, but it is revealed ... -
How colour-deficient observers see things, or not.
Eschbach, Reiner (Journal article; Peer reviewed, 2021)Colour deficiency or, colloquially, colour blindness, is common and has been observed and described in the scientific literature for ca. 200 years. In more recent times, algorithms have been developed that simulate the ... -
On Large Local Error Accumulation in Multilevel Error Diffusion
Eschbach, Reiner; Pedersen, Marius (Journal article; Peer reviewed, 2016)Error diffusion is an often used method that transforms a continuous tone (multibit) image into an image of lower bit depth, most commonly into a binary output of black and white. The simplicity of the processing and the ... -
On the edge: A scalable daltonization method focusing chromatic edges and cntrast
Simon-Liedtke, Joschua Thomas; Farup, Ivar; Eschbach, Reiner (Journal article; Peer reviewed, 2017)Color Vision Deficiency (CVD) leads to a reduced capabilityto identify chromatic edges and contrast and may cause signifi-cant problems in various color tasks like, for example, compar-ative color tasks. Many daltonization ... -
UV Watermarking of Images in Clustered Dot Scenarios
Kitanovski, Vlado; Eschbach, Reiner; Pedersen, Marius; Hardeberg, Jon Yngve (Journal article; Peer reviewed, 2018)Digital Watermarking of printed images is an important capability for many applications. Visually detecting the watermark through, e.g. UV illumination, enables the watermark use in uncontrolled environments. In our previous ...