by Chris Peterson » Sun Nov 19, 2017 9:04 pm
geckzilla wrote:Chris Peterson wrote:geckzilla wrote:
Usually caused either by slightly mismatched black levels when combining multiple image parts to form a larger panoramic scene, or perhaps some sloppy editing with the rectangular marquee to adjust a small section. Either way, the person who made the adjustments probably can't see the blacks on their computer screen very well. A lot of people can't see details like that, really. Either they have a poorly adjusted monitor, a cheap screen, or are working in bright ambient lighting conditions usually involving the Sun.
This seems to be a single image, however. Stretch the contrast to see just the shadows, and it's apparent that some very peculiar processing has been applied, across the entire image. Maybe some sort of attempt at an HDR composite?
M162350671LE.jpg
I will give you this link, found via a simple search for the image ID conveniently provided by the image filename. Two separate image components.
http://wms.lroc.asu.edu/lroc/view_lroc/ ... 62350671LE
Thanks. I was thinking about trying to track the source down, but then I didn't. I assume the data comes from the pair of narrow field cameras operating simultaneously. When I look very closely, I can see stitching artifacts across the sunlit regions, as well.
Still, though, there's some odd processing involved. The strange outlines around the shadow regions (present in both halves of the processed image) are not there in the source data.
[quote="geckzilla"][quote="Chris Peterson"][quote="geckzilla"]
Usually caused either by slightly mismatched black levels when combining multiple image parts to form a larger panoramic scene, or perhaps some sloppy editing with the rectangular marquee to adjust a small section. Either way, the person who made the adjustments probably can't see the blacks on their computer screen very well. A lot of people can't see details like that, really. Either they have a poorly adjusted monitor, a cheap screen, or are working in bright ambient lighting conditions usually involving the Sun.[/quote]
This seems to be a single image, however. Stretch the contrast to see just the shadows, and it's apparent that some very peculiar processing has been applied, across the entire image. Maybe some sort of attempt at an HDR composite?
M162350671LE.jpg[/quote]
I will give you this link, found via a simple search for the image ID conveniently provided by the image filename. Two separate image components.
http://wms.lroc.asu.edu/lroc/view_lroc/LRO-L-LROC-2-EDR-V1.0/M162350671LE[/quote]
Thanks. I was thinking about trying to track the source down, but then I didn't. I assume the data comes from the pair of narrow field cameras operating simultaneously. When I look very closely, I can see stitching artifacts across the sunlit regions, as well.
Still, though, there's some odd processing involved. The strange outlines around the shadow regions (present in both halves of the processed image) are not there in the source data.