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Ross Alford | all galleries >> JCU Tropical Biology field trips >> misc_fieldtrips >> Test and demonstration images > brownie with decal
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brownie with decal

Pseudo-forensic image revealing text of decal on image of box brownie. Completely illegible on original, image split into greyscale images of R,G, and B channels, after which it was obvious that the R and B were most different at the location of the text. R pasted onto B and blending mode set to difference. Image then flattened and levels adjusted to emphasise the text. All done in Photoshop CS5.

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