We present an analysis and model for evaluation of color shifts in halftone printing caused by inter-separation misregistration for periodic clustered dot halftones. Using a lattice framework, we present intuitive analysis that demonstrates conditions under which the average color is asymptotically invariant under inter-separation misregistration. Combining the framework with an analytic repres...

3D graphics and animation have been used increasingly to provide on-line help and training of complex electro-mechanical devices. A good training system must be able to demonstrate clearly the correct dynamic sequences of using the device based on users’ current state and requested action. The system must also be able to provide optimal viewing angles and lightings for users to view the dynamic...

Halftoning is a crucial part of image reproduction in print. First-order frequency modulated (FM) halftones, in which the single dots are stochastically distributed, are widely used in printing technologies, such as inkjet, that are able to stably print isolated dispersed dots. Printers, such as laser printers, that utilize electrophotographic technology are not able to stably print the isolate...

This paper explores current printer identification techniques which allow the origins of a printed document to be established. The printer used to create a particular document can be traced by using unique and hidden information contained within that document. Printer identification can ultimately lead to the printer’s owner(s) which provides a valuable tool to government agencies during crimin...

We study the problem of learning from positive and unlabeled examples. Although several techniques exist for dealing with this problem, they all assume that positive examples in the positive set P and the positive examples in the unlabeled set U are generated from the same distribution. This assumption may be violated in practice. For example, one wants to collect all printer pages from the Web...

Research in cell printing by piezoelectric inkjet printer has been conducted, however, relatively reliable single-cells printing yield had not been obtained. We proposed a different approach to increase the yield in single-cells printing by utilizing piezoelectric driving method not used in recent inkjet printer devices, push-pull method. Furthermore, cell recognition system constructed by imag...

The increased interest in color management has resulted in more options for the user to choose between for their color management needs. Evaluating the quality of each of these color management packages is a challenging and time-consuming task. We propose an evaluation using image quality metrics to assess the quality of a printer profile. This will determine the best solution for a given set o...

"We have developed a novel approach for the detection of MRI based on optical atomic magnetometry," said chemist Alexander Pines, one of the world's leading authorities on NMR/MRI technology and leader of the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) team. Pines holds a joint appointment as a chemist with Berkeley Lab's Materials Sciences Div. and with UC Be...

A significant factor in Hewlett-Packard’s new Printing Performance Architecture (see Article 1) is the reduction of the processing power embedded in the printer. Using the host PC for all image formatting leaves only motor, print cartridge, I/O, user interface, command, and status functions to be controlled by the firmware. This results in significant cost savings by reducing processor needs an...