Burham Canyon KER-273. I visited it in 1992, predigital. The site was hard to find. I scanned an old photo when looking for good examples to test DStretch. This was in 2005 in the early development of DStretch. Enhancements have changed a lot since then.
I first tried dstretch in various colorspaces. Here is YCbCr. Not very pretty, but it brings the red pigments out from the background.
I next tried CRGB. Also good on the red pigments, but now a surprise creature appears at left center. Is it really there? It is not in the style of the rest of the panel.
I fiddled with area selections using RGB, not mapped back, until I got him to really stand out. Also seems to be a faint ladder element to the right of the creature. But is DStretch fooling me?
I needed to scan another photo to be sure. This is a different view of the same panel.
I had saved the matrix that made him stand out. Now I applied it to the new image. There he is! Seems no doubt.
This is just having fun with the colors. I used CRGB then hue shifted 100 degrees. I'm eager to revisit the site to see if DStretch has really discovered a creature that I missed when there.
Update 9-9-05: My friend Amy Leska (now Amy Leska Marymor) visited the site in July and took this closeup of the creature.
Amy\'s picture enhanced using RGB, not mapped back, then hue shifted 191 degrees to bring out the creature. Something is definitely there, maybe a creature, maybe only a curious intersection of lines on a disk.
Update 2: I finally got the chance to revisit the site in 2-28-2010. I joined a KCAS trip led by Jack Sprague.
Here is the panel. Jack was initially skeptical about the creature.
LDS Gives a good overall enhancement. The creature appears!
YRE brings out many hard to see red details.
LYE brings out yellow paint as browns. Now much yellow painting can be seen.
LDS gives a good overall enhancement.
I and Alex Sim had DStretch cameras so we could show others the enhancements. There was no doubt anymore about the creature.
YRE shows details of the red paint.
LYE shows that there is yellow paint in the painted disk in lower left.
There are other panels nearby.
Another panel under a rock. Verv faint painting almost impossible to see.
YRE shows a complicated disk.
We had a great day seeing sites. Here Jack Sprague and Manuel Andrade discuss things at a site inside the city of Tehachapi. Last slide.