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Pixel
What is it?
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A pixel is the smallest portion of an image or displays that a computer is capable of printing or displaying.
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You can get a better understanding of what a pixel is when zooming into an image as seen in the example below.
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In computer graphics, a pixel referred as follow.
PIXEL
PICTURE + ELEMENT
800 pixels
800 pixel
Zoom in
Picture Resolution
(800 x 800)
1 PIXEL
Pixels arranged in rows &columns.
(Width x Height)
8-bit for B&W.
3 byte for color.
Pixel is a smallest element in a graphic image.
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In computer graphics, the pixel referred as follow.
480 pixles
640pixle
Zoom in
Screen Resolution
(640 x 480)
1 PIXEL
( RGB led )
(Width x Height)
Each pixel is actually composed of three dots -- a red, a blue, and a green.
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You can see RGB LEDs if you close to LCD screen.
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It gives a better understanding of how the display works.
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With this display, each pixel is made up of a red, green, and blue (RGB).
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RGB is increased or decreased in intensity to make up each of the colors you see on the screen.
How does it work?
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Pixels carried by one or more electronic signals or represented by one or more digital values, or pixels on a display device, or pixels in digital cameras.
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When these color dots converge, they build colored pixels.
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Now a typical HD monitor can display 1,366 x 768 pixels.
3 Megapixel
camera
640 pixels
can produce
480 pixels
Picture Resolution
(640 x 480)
Total number pixlels, 640 × 480 = 307,200 pixels
More resolution has more pixels.
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The number of distinct colors that can be represented by a pixel depends on the number of bits per pixel (bpp).
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A 1 bpp image uses 1-bit for each pixel, so each pixel can be either on or off.
Application
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The quality of a display system largely depends on its resolution.
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Most digital display and images are made of pixels to provide a better quality picture.
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True Color systems use 24 bits per pixel, allowing them to display more than 16 million different colors.
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