Image synthesizing system

Details Image synthesizing system Image synthesizing system

1991-06-05

1993-03-16

Evans, Arthur G.

Image analysis

Histogram processing

For setting a threshold

382 58, 395109, 358474, G06K 1500

Patent

active

051951754

ABSTRACT:
An image synthesizing system provided with an interpolation circuit for interpolating data of neighboring pixels of a multi-level picture, a decompression circuit for converting data representing characters and graphic forms into data of pixels thereof, a first look-up table unit for converting the data of pixels composing the characters and graphic forms into data representing gradation levels of a four-color halftone, a second look-up table unit for outputting control data for synthesis which includes halftone-dot pattern information used to indicate halftone-dot patterns corresponding to the characters and the graphic forms and region discriminating information used to indicate which of the characters and the graphic forms should be clipped, a multi-level picture and bi-level element comparison circuits, which are independent of each other, respectively converting the multi-level picture and the bi-level characters and graphic forms into bi-level dot patterns and a selecting circuit for selectively outputting one of the bi-level dot patterns respectively corresponding to the bi-level characters and the bi-level graphic forms.

REFERENCES:
patent: 4984163 (1991-06-01), Kawamata et al.
patent: 5148295 (1992-09-01), Matsubara et al.

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