Method for detecting positions of consecutive bits set to predet

Details Method for detecting positions of consecutive bits set to predet Method for detecting positions of consecutive bits set to predet

1993-07-12

1994-08-30

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

3582611, 36471511, G06K 936

Patent

active

053435400

ABSTRACT:
A first bit length representing the number of bits set to a predetermined code is found, which occur consecutively starting with the least significant bit of a first word among a plurality of words in a signal and continuing toward the most significant bit of the first word. From a second word following on the lower order side than the first word, a second bit length representing the number of bits set to the predetermined code is found, which occur consecutively starting with the most significant bit of a second word and continuing toward the least significant bit of the second word. A sum bit length is then calculated by adding the second bit length to the first bit length and compared with the bit length constituting a single word. From the results of the comparison, the position in the signal is detected at which bits set to the predetermined code occur consecutively by a length not less than the bit length constituting a single word.

REFERENCES:
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patent: 4542413 (1985-09-01), Rallapalli et al.
patent: 4568983 (1986-02-01), Bobick
patent: 4740994 (1988-04-01), Ouchi
patent: 4748575 (1988-05-01), Ashkin et al.
patent: 4841299 (1989-06-01), Weaver
patent: 5111415 (1992-05-01), Shackleford

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