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Related Concept Videos

Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

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Related Experiment Video

Updated: Jun 15, 2026

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
14:09

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope

Published on: April 7, 2014

Hierarchical colorant-based direct binary search halftoning.

Zhen He1

  • 1Xerox Corporation, Global Product Delivery Group, Wilsonville, OR 97070, USA. zhen.he@xerox.com

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|March 19, 2010
PubMed
Summary
This summary is machine-generated.

Hierarchical colorant-based direct binary search (HCB-DBS) improves halftone texture by integrating yellow colorant for better dot control. This advanced algorithm reduces graininess and color mottle artifacts in digital halftoning.

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Last Updated: Jun 15, 2026

Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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Area of Science:

  • Computer Vision
  • Image Processing
  • Digital Halftoning

Background:

  • Colorant-based direct binary search (CB-DBS) established a benchmark for dispersed-dot halftoning.
  • Existing algorithms face limitations in optimizing halftone texture and minimizing artifacts.

Purpose of the Study:

  • To enhance image quality beyond current dispersed-dot halftoning benchmarks.
  • To develop a novel halftoning algorithm with superior halftone texture and artifact reduction.

Main Methods:

  • Developed hierarchical colorant-based direct binary search (HCB-DBS).
  • Integrated yellow colorant for dot-overlapping and dot-positioning control.
  • Utilized hierarchical monochrome DBS halftoning and recursive joint monochrome DBS halftoning.

Main Results:

  • HCB-DBS achieved improved halftone texture for individual and joint dot-color planes.
  • Demonstrated better dot distribution for cyan and magenta colorants.
  • Reduced halftone graininess and eliminated color mottle artifacts compared to CB-DBS.

Conclusions:

  • HCB-DBS represents a significant advancement in dispersed-dot halftoning.
  • The algorithm effectively enhances visual quality by optimizing colorant integration and dot placement.
  • HCB-DBS offers a new standard for high-quality digital halftoning.