A spatially-adaptive method for color printing is proposed that is robust to printer instabilities, reproduces smooth regions with the quality of ordered dither, reproduces sharp edges significantly better than ordered dither, and may be less susceptible to moire. The new method acts in parallel on square, non-overlapping blocks of each color plane of the image. For blocks with low spatial acti...

Common tasks such as printing, displaying, and visualizing images may require a transformation of the input image from its source color space to a target color space. Such transformations include converting color images to grayscale for printing, mapping images to the gamuts of target display devices, preparing images for color deficient viewers, and fusing multispectral or multiprimary data in...

Efforts to apply an end-to-end color reproduction system using multi-channel visible-spectrum imaging to a van Gogh self-portrait at the National Gallery of Art, Washington D.C., have been under way at the Munsell Color Science Laboratory. The goal was to perform preliminary experiments by imaging a target consisting of pigments based on direct spectral measurements of the painting. These exper...

This paper describes a practical approach for the fabrication of highly visible interference color images using sol-gel ink technique and a common desktop inkjet printer. We show the potential of titania-boehmite inks for the production of optical heterostructures on various surfaces, which after drying on air produce optical solid layers with low and high refractive index. The optical properti...

Recently, with the advent of printers with more than four colorants, the development of characterization and calibration techniques for these printers has been an important area of research in color printing. In addition to the ”hi-fi” printers having colorants such as green, orange, red, blue and violet to increase the gamut of traditional CMY K (cyan, magenta, yellow, black) printers, CMY Kcm...

This paper describes a data compression system using Evolvable Hardware (EHW) for digital color electrophotographic (EP) printers. EP printing is an important technology within digital printing, which is currently having a significant impact on the printing and publishing industry. Although, it requires data-compression to reduce the cost for transferring and storing large EP images, traditiona...

Nowadays stereophotography is rapidly developing, providing a plenty of sources for stereoimages. The goal of current technology – to provide users with possibility to get high quality 3D anaglyph prints for education and entertainment. To do so it is necessary to agree color characteristics of glasses and printed colors, since errors in color transmission lead to cross-talk interference and gh...

1 Short History The technology that makes laser printers work goes back to the first xerographic copiers, produced about sixty years ago. The inventor was a patent attorney named Chester Carlson. Chester collaborated with Battelle Memorial Institute in 1944 and then in 1947 with a small company named Haloid Corporation in Rochester, NY to develop the first copier. Haloid eventually changed its ...

Re-calibrating a printer in response to systematic changes is measurement and labor intensive. In this study, a fast correction method with cycle-to-cycle control was proposed. The process includes two steps: the creation of look-up table using a characterization data set, and image color compensation in conjunction with Windows printing architecture. Several types of correction models for dete...

Due to the proliferation of low-cost color printers during the last few years, converting full-color images to halftoned bi-level separations remains an important issue. A halftoning technique should faithfully reproduce the original color image, while satisfying several quality criteria such as absence of visible artifacts and Moires, providing reliable color reproduction as well as good small...