inkscape: added inkscape and handwriting convert guide

wiki/images.md

@@ -1,7 +1,8 @@
 # Images
 
 An image is a visual representation of something.
-In the computer context it is a file with an extension like `png`, `jpg`, `gif` among others.
+In the computer context it is a file with an extension like `png`, `jpg`, `gif` and `svg` for
+vector graphics but there are many more.
 This entry also features medicinal image and visual formats such as DICOM.
 
 ## Clients
@@ -9,6 +10,7 @@ This entry also features medicinal image and visual formats such as DICOM.
 - [sxiv](https://github.com/xyb3rt/sxiv) is an image viewer for [Linux'](/wiki/linux.md)
   [X window system](/wiki/linux/x_window_system.md).
 - [Weasis](https://github.com/nroduit/Weasis) is a cross-platform DICOM viewer.
+- [Inkscape](/wiki/inkscape.md) is a cross-platform vector graphic editor.
 
 ## Editing
 

wiki/inkscape.md

@@ -0,0 +1,29 @@
+# Inkscape
+
+[Inkscape](https://inkscape.org/) is a cross-platform editor for vector graphics.
+
+## Setup
+
+On the [Inkscape website](https://inkscape.org/release/) setup files for
+[Windows](/wiki/windows.md), MacOS and [Linux](/wiki/linux.md) can be found.
+On most Linux distributions Inkscape can usually be installed with the corresponding 
+[package manager](/wiki/linux/package_manager.md).
+
+## Usage
+
+This section addresses various way to use Inkscape for specific tasks.
+
+### Convert Handwriting to Vector Graphic
+
+To convert handwriting to a vector graphic an image of the writing should first be opened in
+Inkscape.
+First the levels of black and white can be changed by using `Extensions > Raster > Levels` and
+changing the values for white and black points.
+Afterwards the bitmap should be traced.
+For this select `Path > Trace Bitmap` and change the values in the Detection mode 
+`Brightness cutoff` until it matches your expectations.
+After this the image has been converted to a bitmap, but most of the times it is not smooth and has
+quite some errors.
+The removal can be done by hand by removing the points manually.
+This is useful to do for bigger errors.
+For smaller errors `Path > Simplify` can be used.