What is sub-pixel rendering?

Sub-pixel or sub-pixel rendering is a process in which a single pixel on the screen is decomposed into component colors by computer software, and the perceived colors are created by combining different intensities Rendering an image with subpixels results in smoother angles and curves, because the units displayed are smaller than the standard pixels used to fill the area The sub-pixel rendering process is most often used to improve the appearance of fonts on your computer screen Other applications include sharpening images or improving the appearance of vector graphics The basic principle of sub-pixel rendering is based on some display processing and display information, especially LCD When an image is drawn on the screen, it is composed of many points called pixels Depending on the display technology, these dots can be one of millions of colors Most users see a single pixel composed of more than three dots, each of which only illustrates a single color, usually red, green or blue These colors blend together to determine the final color of the individual pixels we see When rendering an image, you can get more gradient levels by manipulating the subpixels of larger pixels The final result is that the space normally occupied by the whole pixel is only partially filled by sub-pixel, creating an illusion of smooth curve Subpixel rendering is often used to contrast another image processing technique called antialiasing, sometimes with the same effect A complex problem that makes sub-pixel rendering ineffective is the details of the display technology used Although many LCD displays rank pixels in red, green, and blue, this is not always the case Some displays are arranged in blue, red, and green order This causes the sub-pixel rendering algorithm to activate some pixels incorrectly The result is that although the text presented in this environment is visible, it is very weak, and the color of the area around the letter's main pixel reduces the text quality The inconsistency of display hardware also makes the sub-pixel rendering standard difficult to implement in full-color image display The existence of some algorithms, especially when it comes to image resizing or quality editing, also makes it difficult to ensure consistency on another computer with different displays Although the viewer's vision plays an important role in the effect, many operating systems still try to use the sub-pixel rendering of text display as the default setting.