SYNOPSISsines image xsize ysize horfreq verfreq
squares image xsize ysize horfreq verfreq
DESCRIPTIONsines 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.
AUTHORN. Dessipris - 27/02/1992