Legacy ImageMagick Discussions Archive

You can do many things. I show a few thousand examples on my web pages. (Most examples were written for IMv6. For v7, change "convert" to "magick".)

ImageMagick is a command-line program. In Microsoft Windows, open a "Command prompt" (also known as "console") window. At the prompt, type "magick" and press return. This should show something like this: Error: Invalid argument or not enough arguments Usage: magick tool [ {option} | {image ...

jaffamuffin wrote:What am i doing wrong ?

Nothing wrong, as such. You are comparing the results from (a) contrast-stretch and then crop with (b) crop and then contrast-stretch. The images in these two cases are different, so the deskew angles are also different.

I'm still not sure what you are asking. A program can be written in whatever language you want that reads sliders and applies effects to images, with updates to a screen copy of the image in real time. I have done that, with C and ImageMagick (unpublished). Gimp is open source, so you can see how it ...

I don't understand your points 3 and 4. Showing the actual commands would help. Pre-processing before "-deskew" usually helps, eg: magick 300_01.tif ( +clone -fuzz 10% -fill White +opaque Black -deskew 40% -set option:DESK %[deskew:angle] +delete ) -rotate %[DESK] out.png This needs IM v7. It ...

I'm not sure what you mean. Perhaps: some images have the same aspect ratio as 1000:1600. but some don't. You can "-resize 1000x1600" to keep the aspect unchanged, or "-resize 1000x1600!" to make the result exactly that size. See http://www.imagemagick.org/script/command-line-processing.php#geometry ...

At 8 bytes/pixel, each copy of the 5760x3589 image needs 0.165 GB. Adaptive sharpen needs two more copies, so we need 0.5 GB. @ulrichlang: What is your command, and how long does it take? Eg "magick tmpimg.jpg -adaptive-sharpen 5x1 NULL:" on my 2.4GHz laptop takes 22 seconds. Check that no temporary ...

The inputs could be trimmed.

3. We can do things like this:

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f:\web\im>%IMG7%magick r1.png r2.png -metric NCC -format "%t - %[distortion]" -compare info:

r1 - 0.995078

If we ">>out.txt", the results will be appended to out.txt.

wrote:... and turn each line of text into an individual image ...

Type "help for" at the Windows command line for a loop that reads each line of a text file.

I don't use Python. A command line could be (Windows BAT syntax):

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convert ^
  colorWheel.png +write mpr:INPT ^
  -alpha Set ^
  ( +clone -fuzz 30%% -transparent Blue ) ^
  -compose DstOut -composite ^
  ( mpr:INPT -colorspace Gray ) ^
  +swap ^
  -compose Over -composite ^
  out.png

ram wrote:my goal is to make the other pixel in gray scale color instead of transparent,...

Make a monochrome version of the input, eg with "-colorspace Gray". Compose the all_blue_colors.png over that monochrome image.

You have omitted the parentheses ( and ).

For the examples given, connected components would work. Turn non-white into black, with a fuzz factor eg 5% because the input is JPG. Find the largest black object. Use that as a mask to get just the object. magick dimmed02.jpg ^ ( +clone -fuzz 5% -fill Black +opaque white ^ -define "connected ...

If I knew the answer, I'd happily tell you.

At the binary installation, there is a option for "Install development headers and libraries for C and C++". I've never tried this, and don't know if it provides whatever your build tools need.

Perhaps you can try it, and tell us if it works?

It seems to work fine on v7.0.8-64 on Windows 8.1.

Legacy ImageMagick Discussions Archive

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