The Processing of Fine Detail for Digital Halftone Printing
Abstract:Along with tone and color rendition, the quality of a printed half-tone is determined by its sharpness and definition. At least three periodic processes change the continuous tone image into small fragments during reproduction. The scan lines of the input and output devices and the pattern of the halftone all limit the frequency spectra of the b&w image, and with 4 color printing there are three additional halftone patterns for the C, M and Y to interfere. Beginning with image capture, the resolution of the sampling process establishes a trade off between maintaining fine detail and the volume of input data to be processed.
Currently there are a variety of tools available to enhance the detail in an image. Unsharp masking and other filters are used to compensate for the lack of scanning resolution or to enhance detail beyond what was available in the original image. We have developed adaptive halftone screening technology because none of the existing techniques for improving image detail compensate for the loss of detail created by the halftone screening process itself. We will discuss here the effects of our screening technology in relation to the content of the original image, to the type of printed product, to the amount of correction and the viewing conditions.
Document Type: Research Article
Publication date: January 1, 2004
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites