Duotone refers to an image with various shades of a hue mapped in an vector or wedge through a color space. The colorant, the gradient curve, and the number of colorants used define the slice through the color space. The image is printed with two or more analogue colorants. The colorants may be custom formulated or selected from a named color system. Typically two colorants are placed on a subs...

HP and Microsoft propose the addition of support for a standard color space, sRGB, within the Microsoft OS’s, HP products and the Internet. The aim of this color space is to complement the current color management strategies by enabling a third method of handling color in the OS’s and the Internet that utilizes a simple and robust device independent color definition that will provide good quali...

|Image halftoning converts a high-resolution image to a low-resolution image, e.g. a 24-bit color image to a three-bit color image, for printing and display. Vector error di usion captures correlation among color planes by using an error lter with matrix-valued coe cients. In optimizing vector error lters, Damera-Venkata and Evans transform the error image into an opponent color space where Euc...

Three-dimensional (3D) printing technology has revolutionized tissue engineering field because of its excellent potential of accurately positioning cell-laden constructs. One of the main challenges in the formation of functional engineered tissues is the lack of an efficient and extensive network of microvessels to support cell viability. By printing vascular cells and appropriate biomaterials,...

We present a method for retexturing non-rigid objects from a single viewpoint. Without reconstructing 3D geometry, we create realistic video with shape cues at two scales. At a coarse scale, a track of the deforming surface in 2D allows us to erase the old texture and overwrite it with a new texture. At a fine scale, estimates of the local irradiance provide strong cues of fine scale structure ...

By taking into account the properties and limitations of the human visual system, images can be more efficiently compressed, colors more accurately reproduced, prints better rendered. To show all these advantages in this paper new adapted color charts have been created based on technical and visual image category analysis. A number of tests have been carried out using extreme images with their ...

We evaluate a new 12-channel multi-spectral line scan camera system for full-width inline color measurements. The system provides full reflectance spectra for each pixel allowing for accurate color measurement with high spatial resolution. In our analysis, we performed measurements on three test-charts printed in our lab and by different offset printing shops in Germany. We compare the results ...

Introduction The problem of halftoning in digital printing has provided a splendid new example of a mathematical opportunity in modern technology. Digital halftoning is the technique used to display an image with a few immiscible colors discretely applied to paper. This problem involves various fields of science such as the physics of light, the biology of the human visual system, and the mathe...

Most color image printing and display devices do not have the capability of reproducing true color images. A common remedy is the use of dithering techniques that take advantage of the lower sensitivity of the eye to spatial resolution and exchange higher color resolution with lower spatial resolution. An adaptive error diffusion method for color images is presented. The error diffusion filter ...

In this paper, we will address the issues and the challenges for achieving photo-quality output with bi-level digital printing technologies. We will present the case study of transforming a 4-color Hewlett Packard Indigo liquid electrophotographic digital press, into a 6-color printer that can print images that are comparable, in terms of image quality and image permanence, to the traditional p...