Tag: dots

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halftoning

Dithering on Grids

Model-based

Dithering takes an image and tries to represent it with a series of uniformly sized elements: pixels for digital images, or dots of ink for a pen plotter. I’ll assume that the background is white, and ink is black. To get an approximation of continuous gray levels, only some of the possible points will be […]

Categories
halftoning

Stippling: So Many Dots

How can we draw pictures with dots? This is called stippling, which involves putting a lot of dots across an image to approximate tones. On a white background, more (or larger) black dots result in a locally darker image. These two approaches are known as AM and FM stippling. AM – amplitude modulation – means […]