Posted by hellmoss
Great work man! If you can make a tutorial for 1.6, you'll be more than awesome!
I'm sorry, I have no experience at doing video tutorials and I'm currently short of time.
The basic steps in Gimp were:
(1) Upscale the original 800x600 image to 1440x1080, using a sharp resizer
(2) Upscale the left portion of the image in horizontal dimension, to make the image 16:9. This, of course, creates unpleasant knees in those yellow curves that go across the image. I had to erase and recreate them. I also had to re-touch other areas where stretched and original content meet. So it was a lot of manual work.
(3) Sharpen the whole image with warp-sharp to hide the upscaling unsharpness in areas that must appear sharp.
(4) Manually smooth out unpleasant sharpening artifacts in some areas.