Creating gray-scale Chinese characters without digital filtering

Yiu Sang Moon; C. C. Poon; Ho Ching Ho

doi:10.1117/12.367627

2 November 1999 Creating gray-scale Chinese characters without digital filtering

Yiu Sang Moon, C. C. Poon, Ho Ching Ho

Proceedings Volume 3807, Advanced Signal Processing Algorithms, Architectures, and Implementations IX; (1999) https://doi.org/10.1117/12.367627
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A new approach for generating gray scale characters, called gray scale rasterization, is discussed in this paper for generating Chinese gray scale characters. Gray scale characters proved to be superior in quality than the traditional black-and-white characters on the CRT display which is the most important output device for all multimedia, Internet applications. Digital filtering, a commonly used technique is image processing, is often used to generate English gray scale characters which are stored in font libraries for high quality display applications. Simple estimations show that such an approach cannot be used to support the creation of Chines gray scale font libraries. A gray scale rasterizer, which generates gray scale pixel maps directly from the outline descriptions of the characters, is proposed in this proposal. Some implementation techniques are introduced in this paper: the approximation of Beizer curves by straight lines, the investigation of the filling process and the migration of the horizontal and vertical strokes. With such techniques, a gray scale rasterizer will be implemented. It is expected that gray scale Chinese display can be beneficial to the Chinese multimedia and Internet applications.

Citation Download Citation

Yiu Sang Moon, C. C. Poon, and Ho Ching Ho "Creating gray-scale Chinese characters without digital filtering", Proc. SPIE 3807, Advanced Signal Processing Algorithms, Architectures, and Implementations IX, (2 November 1999); https://doi.org/10.1117/12.367627

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