Understand the Wand / imagemagick modifiers better

[etcadinfinitum]

It would be ideal to create tiled demos of various combinations of operators and parameters to see the effects of each operation and find good default parameter sets.

[etcadinfinitum]

Testing img.modulate(x, y)

Original Image

Image grid (excerpt due to 19MB file):

Interesting individual results

Image	img.modulate() call	Interesting behavior
	img.modulate(-800, 200)	Tons of JPG artifact production, interesting color polarity
	img.modulate(-1000, -1000)	Dark scheme, lots of artifacts
	img.modulate(-100, -200)	Focusing on red hues, all others appear to be blacked out
	img.modulate(-200, 0)	Some artifacts, colors are inverted

[etcadinfinitum]

Testing img.function('sinusoid', [frequency, phase_shift, amplitude, bias])

Using same original image as above.

Based on some cursory scripting results, the amplitude argument will mute colors on a reversed scale of 0-1 (so 0.2 is a bad choice, but 0.8 is not), but doesn't have much effect at the higher end of the scale. The bias argument will lighten the image on a scale of 0-1.

Looking at frequency and phase shift only

Result set	Parameters
	Vertical (top to bottom): Frequency (1-5) Horizontal (left to right): Phase Shift (-30 to -90 in 15-degree increments)
	Vertical (top to bottom): Frequency (6-10) Horizontal (left to right): Phase Shift (-30 to -90 in 15-degree increments)