FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Term: Continuous tone Generally referring to pictorial images where there is a non-broken range of tones from white to black that may have every shade of gray represented. There are theoretically an infinite number of tones. Traditional photography (photochemical photography) produces continuous tone images.

Detailed explanation-2: -Raster images are used for photographic images where there is continuous tone. The computer requires the information for the description of each pixel to recreate the image on your monitor, hence raster images can have a larger file size than vector images. Raster images are also known as “bitmapped images".

Detailed explanation-3: -An example of a continuous tone image is a photograph or a color transparency.

Detailed explanation-4: -This type of image is a relatively artificial image. There is usually no noise and blurring as there is in a natural image. Adjacent pixels in a discrete-tone image are often either identical or vary significantly in value. It is possible for a discrete-tone image to contain many repeated characters or patterns.