EE 362, Winter 2006-2007
Colorfulness Analysis of ClearType Fonts
Jiajing Xu
Conclusions
From the graphs from results section, I conclude that the following six parameters are key factors to the colorfulness of ClearType fonts: DPI, letter shape, viewing distance, font size, font family, filter kernel and LCD sub-pixel structure. Being rendered on low resolution LCD, the ClearType fonts appear more colorful than the one being rendered on LCD with higher DPI. When LCD has high resoltuion, one can sit pretty close to the LCD without being bothered by the colorfulness; on the hand, one might want to sit a little farther away from the screen if the LCD has lower resolution. Increasing font size also reduces colorfulness of the ClearType fonts. Edgy font familys (i.e, Times New Roman) introduces more color artifacts than the others (i.e. Arial). Filter kernel is important, and yet it only fine-tunes the colorfulness of the ClearType fonts.
Acknowledgement
I would like to use this opportunity to thank Prof. Brian Wandell for the great lectures, the inspiration and kind help on my project; Jon Winawer for his thoughtful suggestions and prompt email conversations; Joyce Farrell for providing the great ISET toolbox and her help during the course. This is a very fun and enjoyable class and I did learn a lot about the human vision system, camera system and printing techniques, as well as ClearType fonts through my project. Thank you all! :)
© 2007 jiajing