Legacy ImageMagick Discussions Archive

try this using a 1D linear vertical only blur of 20 pixels: convert test.png -alpha set -virtual-pixel transparent -channel A -morphology Convolve Blur:20x65000+90 -level 50x100% +channel result.png This appears to be the solution I was looking for. Thanks for the help! The really visible line sepa...

convert Input.png -alpha set -virtual-pixel transparent -channel A -morphology Distance Euclidean:1,50\! +channel Output_feathered.png From the morphology page located here: https://www.imagemagick.org/Usage/morphology/, I can't see a clear way of making sure the feathering gradient is only north/s...

I am not sure I understand the issue. Can you be more succinct? What is the basic issue? If you have a tiled image that you only want feathered in certain areas. Then create a feathering mask and edit that to avoid the "safe" regions. Then use the mask to apply feathering against some bac...

For the layered tiling, I was using this: A single tile in the center to fill in the small bit of missing image from the feathering in other layers: https://i.imgur.com/uP3RiThg.png Then this set of 4 tiles in a plus/cross shape is composited ontop of the previous single tile layer (This is where t...

How would I go about feathering only specific sides of an image? Basically I did some feathering using a few different layers to combine a bunch of tiles, and arrived at this image: https://i.imgur.com/l4M8BOk.png The problem is however that there are intersecting points on the outside edges, which ...

My OS Info: Ubuntu 16.04.3 LTS (GNU/Linux 4.4.0-1038-aws x86_64) The ImageMagick Version Info: Version: ImageMagick 6.8.9-9 Q16 x86_64 2017-07-31 http://www.imagemagick.org Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC Features: DPC Modules OpenMP Delegates: bzlib cairo djvu fftw fontcon...

Is it possible to average thousands of images with ImageMagick? Whenever I have tried in the past, I would get an error with something like "core dumped".

Perhaps I misunderstand the issue. Is the problem that the tiles are not balanced correctly or have a good brightness/contrast? Or is the issue that your overlap blending is not working adequately. The problem is the brightness between the tiles, not the blending technique. The blending technique s...

What are you doing in GIMP that you need IM to reproduce? Give details of the GIMP commands you use and perhaps screensnaps of the control panels. Here's a GIF of the exact process I followed in GIMP for 3 of the tiles (I selected "levels" under the "colors" option. After I type...

Testing your redist script, and your color level scripts, along with many combinations of ImageMagick commands, I can't seem to replicate the results from GIMP.

So I can use these commands to extract the needed info like this, I assume: convert image.png -format "%{colorspace]" info: convert image.png -format "%[channels]" info: convert image.png -format "%[standard-deviation]" info: convert image.png -format "%[mean]"...

You can also try my redist script. It tries to make each image have the same mean and standard deviation (sigma). So you decide what mean and what sigma you want and apply the same values to each tile. Play with the arguments for one tile until you like the results and then use the same values for ...

Imagemagick has similar tools for clipping the image/histogram. See -level or -contrast-stretch or my script levels. If you modify each image separately, you might get a result that is not what you want. Perhaps you should modify one tile the way you want it to look visually using PS or IM -level e...

I tried to rethink this issue, and used a variety of words that I thought people with a similar issue might use when searching for a solution. I think I might be on to something here. Instead of trying to correct the 4th tile, I think there is an issue with the 3 other tiles. I googled "white h...

Digging into the unmodified tiles, both original and processed: Original tile 0, tile 3: https://i.imgur.com/WNkYkIx.png Processed tile 0, 3: https://i.imgur.com/inLlp7I.png Original tile 1, tile 2 https://i.imgur.com/YbFZfZT.png Processed tile 0, 3: https://i.imgur.com/3S7Lw9U.png I am not sure wha...