One of the mysteries of the English language finally explained.
A rectangular pattern of parallel scanning lines followed by the electron beam on a television screen or computer monitor.
- ‘For raster scan pattern the correlation of a series of images appears on three different timescales.’
- ‘Polygonal scanners relay the outbound and return pulse, scanning the scene or target in a raster format.’
- ‘Height and phase-shift data were respectively collected in the trace-retrace direction of a raster scan.’
- ‘The tracking routine starts with a fast raster scan of a large area of the sample in which the particle of interest can be observed.’
- ‘The embedding of bits in valid blocks in a particular text line is done in a column-wise raster order.’
1930s: from German Raster, literally ‘screen’, from Latin rastrum ‘rake’, from ras- ‘scraped’, from the verb radere.
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