http://potrace.sourceforge.net/

To increase the details scale the input bitmap 200-400%

potrace "IN.bmp" --svg -r 200 -n --group --flat -o "OUT.svg"

:: potrace.bat
@echo off
"C:\Programs\potrace\potrace.exe" %*

Easily convert a simple image to a vector graphic

467300cookie-checkCreate SVG from bitmapno