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Originally posted by CommanderSinclair
what does nasa say it is?
Originally posted by CommanderSinclair
what does nasa say it is?
Unfortunately, I think the "structures" are more visible because they are created (mostly) by your resizing.
Originally posted by mikesingh
I’ve cropped the areas, resized and colorized them and added various filters including brightness/contrast, ‘unsharp mask’, noise reduction, hue/saturation etc, so that the structures are easily visible.
Not really, that is why I like to use the IMG files instead of the GIFs, one thing that it lets me do is adjust the light levels for smaller parts of the photo instead of a global adjustment that will enhance some areas but will destroy other areas.
It is exactly as shown and there doesn’t seem to be any pixilation glitches.
Originally posted by ArMaP
Unfortunately, I think the "structures" are more visible because they are created (mostly) by your resizing.
Originally posted by ArMaP
I have seen on previous ocasions that the images you resize look resized in a way that tries to create detail when the image gets bigger (I think that is the way the image viewer from Windows works, "creating" the image when it is resized to bigger sizes).
The way you posted this image forces it to be resampled by the browser, so it may look different in different browsers.
Originally posted by mikesingh
The pic below shows this city zoomed/enlarged without applying any filters, like the image in your post above (note the pixels):
I don't see any noticeable loss of detail or creation of detail, but I wasn't talking about this photo, this is something that has to be considered for each case.
Do you find any loss of detail in this pic compared to the first one?
As I said above, in this photo it looks like the resizing did not create anything, but on the images from the opening post it looks like the images had some detail added by the processes used on them.
So what you contend that resizing produces stuff and creates detail that isn't there may not be quite correct! The first and third images are exactly alike, with no tricks by the resize algorithms! Or can you show any additional 'details' that have showed up in the third image that are not there in the first?
Originally posted by ArMaP
It's from THEMIS, image V18470005.
And this is a crop of the "hydro power station" area.