Working Solution

Install Inscape with Python support

Export trace as dxf from Inkscape acording tutorial: How to create a GCode file from a JPG or DXF.
Open in LibreCAD do what is neccesary scale move etc.
Export as MakerCAM SVG.

Import SVG in FlatCAM.
Continue in FlatCAM.

Tested on

Inscape 0.92.3 x64 2405546, 2018-03-11
LibreCAD 2.1.3
FlatCAM 8.5 2016/07

If you want to use DXF2GCODE you have to export from Inkscape without LWPOLYLINE.

Inspired by
How to create a GCode file from a JPG or DXF

Path to script in LinuxCNC GitHub

image-to-gcode.py

Requirements

1

apt-get install python-tk python-imaging-tk

Alternatively using pip

1

pip install python-tk pillow

gcode Python module

Update script

Documentation

http://www.linuxcnc.org/docs/2.4/html/gui_image-to-gcode.html#r1

Another tool

https://opentinkers.com/tutorials/gcode_creation/
Image to gcode
http://www.thuijzer.nl/image2gcode/

Install FlatCAM to Debian 9

Requirements

1
2

git clone https://bitbucket.org/jpcgt/flatcam
apt-get install python3 python3-pyqt4 python3-simplejson python3-tk python3-numpy python3-matplotlib python3-rtree python3-shapely python3-svg.path

FlatCAM: Free and Open-source PCB CAM

Image to FlatCAM

SVG Import

https://www.v1engineering.com
https://www.thingiverse.com/thing:790533

Probably last version

https://www.thingiverse.com/thing:1671517
https://reprap.org/wiki/Mostly_Printed_CNC

From Matrin

https://www.v1engineering.com/specifications/
https://www.v1engineering.com/assembly/
https://www.thingiverse.com/thing:790533

Another Machine

https://medium.freecodecamp.org/how-to-build-a-3-d-printer-using-cnc-controller-in-python-bd3cd5e28516

https://reprap.org/wiki/CNC_Gcode_controller