GEOMETRIC TRANSFORMATION AND DATA ORGANIZATION IN DIGITAL IMAGE PROCESSING
Senlin Yang · Chinese Journal of Computers · 1980
In this paper the algorithms for geometric transformation of image data and the decomposition of the image matrix into submatrices are introduced. When the image is digitized in the line scanning mode, the geometric transformation of the two dimensional image matrix can be realized by two one-dimensional geometric transformations, i.e., first carrying out the geometric transformation along the scanning lines and then rotating the image matrix through 90 degrees and carrying out the geometric trans formation in the other direction. These algorithms can be implemented in a minicomputer system with an appropriate software and a special-purpose hardwired device, so that it can reduce the computing time effectively and is adaptable in minicomputer digital image processing systems.