3 ms·

It's just you.

• colanderman 16y ago
  Don't be snarky. There's definitely horizontal/vertical artifacts, probably from raw pixel interpolation. They're just more noticeable in the color image because the patterns are offset so they cause hue variances: http://fstutoring.com/~chris/temp/artifacts.png http://fstutoring.com/~chris/temp/artifacts.png
  • wlievens 16y ago
    What do you mean by 'raw pixel interpolation'?
    • colanderman 16y ago
      Digital imaging devices have interesting pixel patterns. A common pattern found in digital cameras is four sensors in a square grid, red/green/blue/green. Since most image formats, like PNG, assume only three channels centered on one another, the four raw pixels must be interpolated to create one "cooked" pixel. Due to reasons relating to signal processing which I'm not qualified to discuss (e.g. Nyquist limit and aliasing), a naïve sampling of these pixels can result in image artifacts such as Moiré patterns. My guess is that the artifacts I'm seeing in these images are of this type, but I could be wrong.
      • wlievens 16y ago
        Oh you mean interpolating the Bayer filter, okay. I work in this industry (digital imaging, not space) but since all color-filtered images I get to see are raw, I only see checkerboard grayscale :-)
  • deleted 16y ago
    [deleted]