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Copy of Understanding Pixel and Resolution

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by

Samantha Go

on 3 October 2013

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Transcript of Copy of Understanding Pixel and Resolution

Understanding Pixel and Resolution
Basic attributes of pixel-based images:
Dimension
The dimensions of the pixel grid (pixel dimensions) refer to the number of pixels along its width and height.
Bit Depth
tells Photoshop how many shades or colors the image can contain
Pixel
In digital imaging, a pixel, or pel, (picture element) is a physical point in a raster image, or the smallest addressable element in a display device; so it is the smallest controllable element of a picture represented on the screen.
Color Model/ Image Mode
is the one that dictates whether all those numbers represent either shades of gray or colors, and how many.

Resolution
Resolution answers the question “How small are the tiny squares that make up this picture?” Once you bring an image into the physical world, the number of pixels across the width and height take up a specific amount of physical space in print or on screen, and that determines the resolution. The resolution of an image is the number of pixels per unit of measurement.

Two different
kinds of resolution:
Dots per inch
This refers to the number of dots per inch that an inkjet printer is capable of applying to a sheet of paper.

Pixels per inch
It refers to the distance between the pixels that make up digital images.
How Resolution





Changes During Production
Reported by:
Ariola, Rozelle
Group 3: Generose Generation
Full transcript