From: John Hudson > If you have an LCD screen, ClearType can significantly improve > the display > of even poorly hinted fonts, but hinting in the y-direction remains very > important even then.
ClearType works on LCD because the 3 R,G,B pixels are equal vertical bars making a complete color pixel (so a single white pixel can effectively be have three horizontal aligned positions: R+G+B, G+B+R and B+R+G). This nearly triples the horizontal resolution for hinting, but it's a shame that no solution has been developped for CRT displays, where pixels are typically rendered in a hexagonal matrix, that the hinting process could consider. Other geometric shapes are used in color CRT, notably with Trinitron CRT displays, and hinting could exploit these properties. The main issue with CRT is that it's difficult to predict the alignment of the rendered hexagonal matrix on the difracting surface, as pixels (accelerated electron beams coming with a slightly different angle) tend to be difracted in another triangular shape through the dotted metalic screen that's just before pigmented surface. But I think that some maths on the effect of this unpredictable (because of size adjustment by monitor controls) diffraction through the metallic grid could reveal interesting geometric properties, that could be used in the hinting process, if the rendering area is represented by a non orthogonal coordinates system (with 2D plane axis at 60?). Is there some search in this area to enhance the resolution of graphics or typeseted text in non rectangular systems like CRT displays? And if so, what are the possible artefact effects caused by distinct chromatic properties of screens, and distinct white temperature? __________________________________________________________________ << ella for Spam Control >> has removed Spam messages and set aside Newsletters for me You can use it too - and it's FREE! http://www.ellaforspam.com
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