Suitable ΔD for tone reproduction and spatial frequency of images

K. Nakajima, T. Ikeda, Satoshi Shioiri, H. Arai, S. Kubo

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated the value of ΔD (the density interval for 1.30 log H units) that is suitable for current black-and-white photographic systems. We first evaluated the quality of prints for different ΔD values and then explored the effect of spatial frequency content of the image on the suitable ΔD that provides preferred gradation, using simulated images of photographic prints on a computer-controlled CRT. This experiment was conducted to examine whether or not the suitable ΔD depends on the scene. Results show that (1) the suitable ΔD is less than 0.80, which is accepted for the ISO method, and that (2) the suitable ΔD depends on the spatial frequency content of the image.

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalJournal of Imaging Science and Technology
Volume38
Issue number1
Publication statusPublished - 1994 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Computer Science Applications

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