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greyscale - make different patterns
greyscale outimage.bw xsize
ysize patternno
greyscale generates a variety of different patterns.
A monochrome image is created that is xsize by ysize pixels in size. patternno
selects what kind of image is created. Patternno Description _________________________________________________
0 ramp [0...255] in the X direction 1 ramp [0...255] in the y direction 2 circular
ramp pattern 3 all white image of 255 4 horizontail stripes white and black
5 All black except 1% of pixels are in the range [128...255] 6 black and white
checker board pattern 7 grid pattern 8 gamma test pattern 9 gaussian in
the x direction 10 gaussian in the y direction 11 contrast test image 12
all black image 13 all white image 14 random noise image 15 circle 16 rolf
17 sinusoidal line test image 18 Bayer threshold image for dithering
gamcal(6D)
, gamma(6D)
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