I want to like it but its pretty rough as-is. I feel the colors need lot of tweaking to look right, the blending in between missing data on both ctx and viking needs to be improved. Right now the pretty red planet looks sickly and moldy, with awkward artifacts all over the place.
Compare e.g. the surroundings of Jezero crater (Percys landing site) on this Mars26 vs HRSC data:
Yes, those are two really good points. What we do is first we have to find a middle ground on color, contrast, brightness between all Viking photographs. Because there are differences between each. Then we make a decision of what an average color looks like.
Filling in an average color for the overexposed areas is what we'll do for version 1.0 coming in a few days. Running locally it does already look quite nice. Hope it will turn out well on the web app!
The artifacts should be mostly gone with our next version which we are rendering in the next few days.
Greyish areas come from areas where Viking imagery is mostly black. We also updated this part in the next model. Thouhg, that's a tough one.
Let's see how you like the next version!