Image analysis – Histogram processing – For setting a threshold
Patent
1988-02-02
1989-06-06
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
340727, G06K 932
Patent
active
048378453
ABSTRACT:
The present invention deals with rotating an n.times.n block of bits through an angle of +90 degrees or -90 degrees by a method including the steps of: storing the data in a matrix; separating the matrix into groups of bits of rotatable size; transposing first preselected bit positions with second preselected bit positions in each group; and exchanging a first one or more rows of bits in the group with a second one or more rows of bits in the group.
REFERENCES:
patent: 3976982 (1976-08-01), Eiselon
patent: 4052699 (1977-10-01), Mick et al.
patent: 4271476 (1981-06-01), Lotspiech
patent: 4467448 (1984-08-01), Regehr et al.
patent: 4545069 (1985-10-01), Kermisch
patent: 4627020 (1986-12-01), Anderson et al.
patent: 4636783 (1987-07-01), Omachi
patent: 4689824 (1987-08-01), Mitchell et al.
Morrin, "Rotation of Images Using Contour Compressed Data", IBM Tech. Disc. Bulletin, vol. 18, No. 8, Jan. 1976, pp. 2640-2642.
Casey et al., "Parallel Linear Transformations on Two-Dimensional Binary Images", IBM Tech. Disc. Bulletin, vol. 13, No. 11, Apr. 1971, pp. 3267-3268.
Benson et al., "On Line Data Base Level Control", IBM Tech. Disc. Bulletin, vol. 18, No. 8, Jan. 1976, p. 2663.
Eklundh, "A Fast Computer Method for Matrix Transposing," IEEE Transactions on Computers, Jul. 1972, pp. 801-803.
Goertzel Gerald
Pruett David R.
Tompson Gerhard R.
Boudreau Leo H.
Clark George E.
International Business Machines - Corporation
Mancuso Joseph
Poag Frederick D.
LandOfFree
Method for rotating a binary image does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for rotating a binary image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for rotating a binary image will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-46098