Monday, July 30, 2018

Day 17

Today I fixed the issue we were having with stitch together the two mosaicks for the palimpsest. All I had to do was crop out the portion with the black lines. What was causing our issues was the method in which ENVI Classic was saving the mosaicks. ENVI apparently does not save tilted images, so it would fill in the empty space around the mosaick to create a square. Therefor, when we overlay one mosaick on top of the other, the black portion which ENVI had filled in to make a perfect rectangle covered up parts of the image.
I was also having issues today with stitching, but for completely different reasons. One image, which I was stitching to the other, was stretched to a different range. This resulted in the mosaick having half be completely black. To remedy this, I had to load in different images which all were stretched to the same range.
Tomorrow, we are looking more into what methods we can use to possibly pull more information from the corvette sticker.

1 comment:

  1. I had mentioned this to Hudson, and I think he did a post about it, but be careful stitching stretched images. Stretching is good for visualization, but you generally don't want stretch an image until visualization time. It's better to stitch them in their original state so you are comparing like values, and then stretch the result, or you can get some weird intensity issues from one frame to the other.

    -Tyler

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Day 28-29

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