Image rotation apparatus capable of rotating image data of diffe

Details Image rotation apparatus capable of rotating image data of diffe Image rotation apparatus capable of rotating image data of diffe

1993-07-26

1995-06-20

Powell, Mark R.

Image analysis

Histogram processing

For setting a threshold

395164, 395137, 382297, G06F 1206

Patent

active

054267331

ABSTRACT:
Input image data of N bits per pixel is written to and read from buffer memories each having a word length of B bits on a W/N-line basis in the order in accordance with a specified rotation angle and an image size. A word synthesizing circuit synthesizes B/N word data of W bits from W/N readout image data having a word length of B bits so as to produce image data rotated by the specified rotation angle. The synthesized word data are output in the order in accordance with the specified rotation angle while write addresses are generated to store the input image data into a page memory having a word length of W bits with a rotation of the specified rotation angle.

REFERENCES:
patent: 4929085 (1990-05-01), Kajihara
patent: 5067167 (1991-11-01), Berger
patent: 5111192 (1992-05-01), Kadakia
patent: 5295245 (1994-03-01), Alcorn et al.

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