NAME
sines, squares - creates a spatial sine or square wave form
SYNOPSIS
sines image xsize ysize horfreq verfreq
squares image xsize ysize horfreq verfreq
DESCRIPTION
sines creates an one band unsigned char image of the a sine waveform in
two dimensions. The sizes of the created image are xsize by ysize.
The number of horizontal and vertical spatial frequencies are
determined by the variables horfreq and verfreq respectively.
squares creates an one band unsigned cahr image by thresholding a sine
waveform.
SEE ALSO
grey(1), im_sines(3X), squares(1).
COPYRIGHT
N. Dessipris
AUTHOR
N. Dessipris - 27/02/1992
27 January 1992