File:Camp 2009-12-09.png

Screenshot of codename Camp, a homebrew NES game by Tepples, as of 2009-12-09. Made with FCE Ultra and played with in GIMP to simulate TV artifacts and aspect.

How do I made artifacts?
The procedure in GIMP is not exact, but it gives a feeling of the NTSC NES's screen texture:
 * 1) Take screenshot in an emulator.
 * 2) Resize to 512x448, 512x480, etc. using None (that is, nearest neighbor) interpolation. Each NES pixel should become a 2x2 pixel square.
 * 3) Pad to 560x480.
 * 4) Filters > Distorts > Video, 3x3, additive off, rotated off
 * 5) Filters > Generic > Convolution, middle row [0 1 1 1 0], divisor 1
 * 6) Filters > Blur > Pixelize, width 1, height 2 (to simulate field blurring)
 * 7) Resize to 640x480 using linear interpolation.