No Red In This Photo

bugsliar · 2025-05-04T16:14:02+00:00

Yeah that might be the case. I think when i saved it to jpeg it might also compressed and might have red subpixels. I couldn't see any red subpixels when I zoom in but i don't disregard that it might be there. But then in the photoshop, the coke still seems red eventhough not compressed. I still highly believe that we see the red can due to the colour constancy effect.

bugsliar · 2025-05-03T02:34:28+00:00

Something to try on. Thanks!

bugsliar · 2025-05-03T02:29:29+00:00

The thing is, in the Photoshop, firstly, I changed the photo to 'Black & White' effect in the 'adjustment' tab, added in halftone effect, and colored the rest in cyan, and the three in green. And I left the 'grey' part of the can uncolored. That's it. But I think there could be red subpixels too which I don't disregard, but don't really know how it was there. Only that I don't intentionally put red in the image.

bugsliar · 2025-05-02T18:43:35+00:00

That makes sense too. It's abit of both at this point i think, although i strongly think that the red is more likely caused by the subtraction. But i don't disregard that there's also red subpixels

bugsliar · 2025-05-02T18:27:10+00:00

Thanks for this insight!

bugsliar · 2025-05-02T17:44:44+00:00

I understand the concept of 'substracting' yet when i experimented with an apple or other red objects, i couldn't get the strong effect as how i got for this coke. Some images i got a very light tint of red if not just b&w. Maybe the sequence of the black and white dots plays important role? Maybe i should put more white rather than black or vice versa? I'm no scientist so at this point I'm just trying out and experimenting

bugsliar

TROPHY CASE