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You could try a high-pass filter in, for example, Photoshop to bring out the
edges. Starting out with a photo which is underexposed for the subject (e.g.
photograph it on a light-table) may help to reduce unwanted detail.
You might find some inspiration >here<. In particular, at the Radians section in the Trig.dcr movie, I "drew" a circle by covering it with two rect shapes, and moving the lower shape off to the left then the upper shape off to the right.
In the interest of time I did something similar to what Andrew suggested:
1: sized the full color image and save (24 bit)
2: with a copy of the sized full color image:
Select all, apply Filter > Find Edges
Copy all, paste into alpha channel (color indicates mask)
Invert alpha channel (Image > Adjustments > Invert)
Adjust curves so background (mask) is mostly 0-0-0
Reselect RGB channel, select all, fill with blue-print blue (or whatever), save as blue print image (with alpha)
3: place blue print image in low channel, span about 30 frames
4: place color image in high channel, same span, tween blend 0% - 100%
It doesn’t give me that drawing effect I was looking for, I ended up just using some lame combinations of wipes on the blue-print image, however, the blue-print images could be made in about 5 minutes each and looked a whole lot better than hours of work in Illustrator. It helps that my products were similar to kitchen cabinets with strong architectural lines at interesting angles so the Find Edges filter produced a nice effect (once the funky colorization side effect is neutralized).
Thank you for sharing AppliedCD.
Any Wipe or Dissolve you can imagine, can be done with copyPixels() by altering the alpha channel of the source image.