Terra 250m True Color

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Topic Products and Algorithms / Satellite Data Products & Algorithms / Terra 250m True Color (locked) (1817 hits)

By brandon.s Date 2011-10-12 16:27

I apologize if this has been answered elsewhere in the forum, but I was unable to find a description of this particular problem. I am making a series of quasi-250m true color images from both Terra and Aqua. In one of the Terra scenes there is an curious pattern of missing/corrupted pixels. Is this a known problem with the high resolution Terra bands? The pixels appear to be missing/corrupted in the L1A file that I downloaded from the OceanColor WEB (at least for the bands I am using to create the true color image) - and of course propagate through all the downstream products. I am curious if there is there a known work-around for this particular problem? Thanks for any help.

ftp://www.ecy.wa.gov/Sackmann/terra_example.jpg

By @norman Date 2011-10-12 18:27

Hi Brandon,

I see this sort of thing occasionally in the L1 data. It happens
somewhere upstream of our archive, but I do not know what
causes it. You can see the same artifact in the data archived
at Goddard's Rapid Response group.
http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2006205191000-2006205191500.500m.jpg

So far, I have always just resorted to other scenes when I
encountered a corrupted one such as the one you mention.
If I were going to work around the problem, I would probably
filter out the affected pixels and then interpolate from the
surrounding pixels. This would leave small blurry spots,
but they would not be as distracting as the high-contrast
white rectangles.

Regards,
Norman

By brandon.s Date 2011-10-12 18:47

Hi Norman,

Thanks for the quick follow-up! I appreciate your taking the time to look over the problem...just nice to know it isn't limited to something on my end.

Brandon

Topic Products and Algorithms / Satellite Data Products & Algorithms / Terra 250m True Color (locked) (1817 hits)