One thing I noticed when genrating these images was a series of compression artefacts. These were particularly ugly when doing band ratios. I could cosmetically reduce their impact by running a boxcar 3-pixel filter across the data, but this degraded resolution in ways I found unacceptable.
It may be that JPL is also using a spatial filter, due to some sense of "purity" about artefact-free images. Curse the anomalists, who have backed JPL into this corner, IMHO.
For now, we have enough data for some good games. Doug Ellison is producing some REALLY nice pictures with rusty stained rocks, rather than my salmon pinks and leaden ochre skies rather my blue-greys. I like his results...
See also Image 2, Image 3, Image 4, Image 5, Image 4/5 stitch.
Space/Science » in reply to "What color is Mars, anyway?"
Blur - not the rock band...
The whole thread (34 posts)
- Playing with colour in Opportunity Crater. - Warning - lots of images!
- re: Playing with colour in Opportunity Crater.
- So can you infer anything about the rocks from the filtered photos?
- Color--in the eye of the beholder.
- "What color is Mars, anyway?"
- Nasa accused of painting Mars red
- Errata!