Term of the Moment
carbon aware computing
Redirected from: pixels
Definition: pixel
(1) For the Pixel laptop, see Chromebook Pixel.
(2) For the Pixel smarpthone, see Pixel phone.
(3) For Google's Pixel tablet, see Pixel C.
(4) (PICTure ELement) The fundamental display element of an electronic screen or bitmapped image. Screen resolution is rated by the number of horizontal and vertical pixels; for example, 1024x768 means 1,024 pixels are displayed in each row, and there are 768 rows (lines). Likewise, bitmapped images are sized in pixels: a 350x250 image has 350 pixels across and 250 down.
Pixels and Subpixels
In monochrome systems, the pixel is the smallest addressable unit. With color systems, each pixel contains red, green and blue subpixels, and the subpixel is the smallest addressable unit for the screen's electronic circuits. The software addresses the pixel, and the hardware addresses the subpixels. To learn how red, green and blue make all colors, see RGB.
Pixel Structures
In storage, pixels are made up of one or more bits. The greater this "color depth" or "bit depth," the more shades or colors can be represented. The most economical system is monochrome, which uses one bit per pixel (on/off). Gray scale and color typically use from four to 24 bits per pixel, providing from 16 to 16 million colors. See color depth.
Displaying the Pixel
On a display screen, the pixels are LCD or OLED elements. For monochrome, the element is either energized fully or not. For gray scale, the pixel is energized with different intensities, creating a range from light to dark. For color displays, the red, green and blue subpixels are each energized to a particular intensity, and the combination of the three-color intensities creates the perceived color to the eye. See LCD subpixels, screen resolution, vertex shader, voxel and bad pixel.
A Monochrome Bitmap
Color is Always RGB
(2) For the Pixel smarpthone, see Pixel phone.
(3) For Google's Pixel tablet, see Pixel C.
(4) (PICTure ELement) The fundamental display element of an electronic screen or bitmapped image. Screen resolution is rated by the number of horizontal and vertical pixels; for example, 1024x768 means 1,024 pixels are displayed in each row, and there are 768 rows (lines). Likewise, bitmapped images are sized in pixels: a 350x250 image has 350 pixels across and 250 down.
Pixels and Subpixels
In monochrome systems, the pixel is the smallest addressable unit. With color systems, each pixel contains red, green and blue subpixels, and the subpixel is the smallest addressable unit for the screen's electronic circuits. The software addresses the pixel, and the hardware addresses the subpixels. To learn how red, green and blue make all colors, see RGB.
Pixel Structures
In storage, pixels are made up of one or more bits. The greater this "color depth" or "bit depth," the more shades or colors can be represented. The most economical system is monochrome, which uses one bit per pixel (on/off). Gray scale and color typically use from four to 24 bits per pixel, providing from 16 to 16 million colors. See color depth.
Displaying the Pixel
On a display screen, the pixels are LCD or OLED elements. For monochrome, the element is either energized fully or not. For gray scale, the pixel is energized with different intensities, creating a range from light to dark. For color displays, the red, green and blue subpixels are each energized to a particular intensity, and the combination of the three-color intensities creates the perceived color to the eye. See LCD subpixels, screen resolution, vertex shader, voxel and bad pixel.
The simplest pixel representation is a black and white monochrome image in which one bit represents one pixel. Monochrome CRTs use white, green or amber phosphors as a single color over a gray/black screen background.
Red, green and blue make white. Upon close inspection, one can see that the red, green and blue subpixels on this LCD screen are lit, creating the white pixels for the numeral nine.