Hey there.
So after playing around with the Solution.png on Photoshop (Basically just rotating, mirroring and changing the Brightness and contrast), this came up http://imgur.com/a/tbEmY .
The Morse code says "look inside". Still, no clue of the meaning of the white dots.
-It could be meaningless, but when doing the opposite (brightening the picture instead of darkening it), the shape behind the text clearly seems like a diamond (may be my imagination, but I'm not sure)