Acta Optica Sinica, Volume. 2, Issue 2, 122(1982)
Tone reproduction by some specific contact Screens
A new and basic approach for the analysis of cell patterns of some specific contact screens and the reproduced halftone images is presented. Optimum parameters for high fidelity tone reproduction by screens of line, square, circular, and concentric ring cell patterns possessing optical transmittance linearly varying with position have been obtained. These parameters can be used for the design of contact screens, the selection of high-gamma films, and film exposure and development process to achieve optimum
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Hua-Kuang Liu, M. A. Karim. Tone reproduction by some specific contact Screens[J]. Acta Optica Sinica, 1982, 2(2): 122