Legacy ImageMagick Discussions Archive

Thanks a ton, I was trying the barrel distort, but hadn't considered that setup. That should be good enough for my purposes.

I've been trying to figure out how to handle the barrel distortion of a Sequoia camera . Fortunately, they provide the affine transformation but it appears to not fall under the default behavior of ImageMagick. This is how it's described: https://support.pix4d.com/hc/en-us/articles/202559089-How-are ...

I updated the photos with larger versions (1200 pixels). Towards the pixel coordinates 437,37 in the original, there's a blue circle (it's water) and in the flipped version, it's the black hole at the bottom This is also a screenshot showing what I mean: http://screencast.com/t/R4AN5RJECaZ

My original thought would be to extract the alpha channel from the original, and then take all the black pixels from the "possibly flipped" and make them alpha, compare the alpha channels, And if it's within some reasonable variance (since the output may have black pixels that I care about that are ...

I have two tifs that are similar. What happens during normal processing of the original is it has gotten the alpha channel removed and some functions have been applied to the image. Unfortunately, to my dismay despite asking them to fix it, the processing that is done "sometimes" flips the image and ...

I greatly appreciate the help! I was able to get the similar result that was within 6% (which is 'good enough' for my purposes). Thank you guys! Apologize for not being more clear in the initial post.

I'm using: ImageMagick 6.8.9-8 Q16 x64 on Windows 10 (64-bit) Here's the original: https://www.dropbox.com/s/wpf9towx1mcbajl/subtracted_32_depth_16.tif?dl=0 Here's the output from Fiji (not holding the alt key): https://www.dropbox.com/s/w3eb26srzawbf6u/subtracted_32_depth_16_enhanced.tif?dl=0 And ...

And as I re-read that, the "Saturated Pixels" is ignored when Equalize Histogram is checked... So I'm trying to figure out the difference between their implementation and ImageMagick's equalize approach.

My apologies, Fiji (Fiji is just ImageJ [one of those recursive names]) is a free image manipulation software that wraps ImageJ. Specifically here's the documentation on it: http://imagejdocu.tudor.lu/doku.php?id=gui:process:enhance_contrast (I'm doing the histogram equalization approach) and ...

I've been trying to figure out what sort of image manipulation would be required to get the same effect as the Fiji "Enhance Contrast" functionality (this can be found under Process -> Enhance Contrast). The values I'm specifically interested in, within Fiji, are 0.4 for the saturated pixels and ...