(The technical term for this is 'Spatial Sampling'.)īut on any LCD panel, we can take advantage of the known-ordering of the individual R-G-B sub-pixels that exist within each whole LCD display pixel. ![]() The 'pixilation' that is inherent in all digital display systems creates this very familiar looking result. Using standard 'whole' white pixels, the best job we can do creates a very jagged edge. Suppose we wish to draw an object with a sloping diagonal edge. How is all this useful? Take a look at this example. As you probably recall, our eyes only register these three colors and perceive all others as combinations of these. The human eye doesn't 'see' closely spaced colors individually since our vision system deliberately mixes these three primary colors in combination to form intermediates. So: This means that if we were to treat the actual sub-pixels individually - ignoring their differing colors for the moment - we would have three times the horizontal resolution from our existing LCD display panels! ) to form a linear array of 2400 single-color sub-pixels. ![]() ![]() This means that an LCD screen boasting a horizontal resolution of 800 whole pixels is actually composed of 800 red, 800 green, and 800 blue sub-pixels interleaved together (R-G-B-R-G-B-R-G-B. Taken together this sub-pixel triplet makes up what we've traditionally thought of as a single pixel. Splitting the Pixel: When is a pixel not a pixel?Ī single picture element (a "pixel") of an LCD screen is actually composed of three "sub-pixels": one red, one green, and one blue (R-G-B).
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