magick | Magic , madness , heaven , sin | Computer Vision library

The R/exams package supports including TikZ graphics using its function include_tikz(), e.g., as shown in the automaton and logic exercises shipped with the package.

After getting include_tikz() to work for these exercises (see: Why are TikZ graphics rendered with exams2pdf but not with exams2moodle?) I tried to create my own exercise. However, so far this does not work yet. My code is:

I'm trying to create the image with Alpha channel from the second image. I have used this cmd command on windows:

I'm newbie, any help is appreciated. I'll keep it short.

What I'm doing now is "magick *.jpg -append a.png". This merges 100+ of .jpg vertically into a .png. Problem is its long so I wanna split it in half so I get shorter a.png and b.png instead of 1 long .png.

I would like to have a single code that does it because there is hundreds of these folders.

When running this command from the command line prompt:

I want to echo all *.jpg files, except for *-.jpg, so for that I made this command:

im trying to make simple photo editor (for adjusting brightness, contrast, saturation etc...) in WPF and im using the Magick.NET which contains ToByteArray method but the problem is i can't make ByteArray with this method because i'm getting exception because it doesn't wanna make ByteArray from NEF format for some reason...

My first idea, was to take the NEF format convert it to temporary TIFF File which can be converted with this specific method to ByteArray and that file can be converted to bytearray, but i think is very inconvenient and not much smart.

Second thing is when i have the WritableBitmap. How can i make the image from it for Magick.NET to edit it? Should i make another MagickImage Instance which is created with already created ByteArray and edit that image?

I've gotten some code thrown together that will go through a folder, open all images with a certain ending, and create a histogram of them with ImageMagick. What I can't do (and maybe this is a conceptualization issue as I'm still fairly new to this), is figure out how to record that into a spreadsheet, ideally with the filename attached. PyXl seems to work with Pandas and Numpy, but I can't figure out the path to take this output and record it.

Is there a solution to take the histogram output and record it in a spreadsheet?

Edit: Adding my code thus far. Operating in Windows 10 Pro, using VSCode.

Problem

In my quite short script I have the problem that it sometimes reports that the filename or extension is too long. Depending on the $image and $size values in my script this error may occur or not.

E.g. the script below produces this error with the image from here - saved and converted to "example3.png".

I do use Version: ImageMagick 7.0.10-62 Q16 x64 on windows and I don't know what to do with the error message... Any ideas what the problem is here?

Powershell script

Background
I'm maintaining a forked repository that contains a LaTeX project. The README.md contains a .png preview of the .pdf compiled from the example .tex file included in the repo. I often forget to update the .png version using the following ImageMagick command: