Method for converting a bit map of an image to a run length or r

Details Method for converting a bit map of an image to a run length or r Method for converting a bit map of an image to a run length or r

1984-06-29

1987-02-24

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

358260, 358261, G06K 936

Patent

active

046463569

ABSTRACT:
A method for converting an image from a bit map to a run end or run length representation includes the steps of: storing the image as a bit map representation; accessing for each byte in an image by a look-up table a selected routine, corresponding to such byte, from a number of routines for converting bit strings to run representations, wherein the look-up table accessed is selected in accordance with a color value of a preceding pixel binary bit; and executing the selected routine on the current byte to convert the bit string to a run representation; storing in a run representation buffer, as a count value, each run representation; repeating the above steps of accessing and executing for each byte and storing for each run of continuous color to the end of the image.

REFERENCES:
patent: 3739085 (1973-06-01), Rosen et al.
patent: 4121259 (1978-10-01), Preuss et al.
patent: 4555802 (1985-11-01), Fedak et al.
patent: 4610027 (1986-09-01), Anderson et al.

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