Since some time, I’ve had the problem that generating hardcopy images from
cgx doesn’t work properly; the pictures are inverted vertically.
At first, I thought this might have been a change in cgx. But comparing
the source code for cgx.c for 2.16 up to and including 2.19, I don’t see
anything that would explain it.
Creating a screenshot from a terminal, using standard UNIX tools.
The ImageMagick suite has been in my software toolbox for years. It is my go-to tool for manipulating bitmap images. Over the years I have written several front-ends for specific tasks for in Python.
In general, I have used the subprocess module to launch convert or
mogrify from Python.
With the release of Wand 0.5.0 which supports ImageMagick 7, I decided to try
that by porting one of my scripts (foto4lb) to it.
This turned out to be slower than using convert directly.
But now it is 2021. Py-wand is at 0.6.7 and it is time to try again.
This article contains several useful tricks for manipulating PDF files.
The focus of this article is on Free Software, that are available for UNIX-like operating systems. These tools are made for use on the command-line of a shell.
in a previous article we saw how a desktop scanner can be used for macro photography. Often it would be handy to include a visual reference of the scale of such pictures. In this howto I’m using asymptote to add accurate scales next to the picture.
This script “image for LaTeX” is meant for generating LaTeX figure
environments of pictures.
Photos from modern digital cameras are generally so large these days that you have to shrink them to use them …
Note
It is probably better to use dicom2jpg from the same
repository. It produces much smaller files, and the quality …