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Bliss, originally titled Bucolic Green Hills, is the default wallpaper of Microsoft's Windows XP operating system. It is a photograph of a green rolling hills and daytime sky with cirrus clouds . Charles O'Rear , a former National Geographic photographer, took the photo in January 1998 near the Napa – Sonoma county line, California, after a ...
In the High Resolution 320×200, 121-color mode, every cell of 8×8 pixels can have one of the two background and foreground colors of the corresponding text mode character, both freely selectable among the entire 121-color palette (again setting both the hue and the luminance).
8-bit color, with three bits of red, three bits of green, and two bits of blue. In order to turn a true color 24-bit image into an 8-bit image, the image must go through a process called color quantization. Color quantization is the process of creating a color map for a less color dense image from a more dense image. [2]
In the high-resolution 640 × 200 mode (Mode 6), each pixel is one bit, providing two colors which can be chosen from the 16-color palette by programming hardware registers. In this mode, the video picture is stored as a simple bitmap, with one bit per pixel setting the color to "foreground" or "background".
In the lower left image, drawing a blue star on a green background causes the Apple II to add black, white and orange pixels at and near the horizontal boundaries between the green and blue. When the Apple II came out, a new mode had been added for 280×192 high-resolution graphics.
The background figure is the CIE xy chromaticity diagram. The choice of primary colors is related to the physiology of the human eye ; good primaries are stimuli that maximize the difference between the responses of the cone cells of the human retina to light of different wavelengths , and that thereby make a large color triangle .
An IBM computer with a green monochrome monitor Early Nixdorf computer with an amber monitor. A monochrome monitor is a type of computer monitor in which computer text and images are displayed in varying tones of only one color, as opposed to a color monitor that can display text and images in multiple colors. They were very common in the early ...
Image resolution is the level of detail of an image. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved. Resolution units can be tied to ...