Imagetracer java (jar file) - raster to vectorial

You can download here the jar file

Sample prompt with options 

java -jar ImageTracer.jar smiley.png outfilename output.svg ltres 1 qtres 1 pathomit 8 colorsampling 1 numberofcolors 16 mincolorratio 0.02 colorquantcycles 3 scale 1 simplifytolerance 0 roundcoords 1 lcpr 0 qcpr 0 desc 1 viewbox 0 blurradius 0 blurdelta 20

The source code could be found here 

https://github.com/miguelemosreverte/imagetracerjava

that it's enhanced versionf of this older one

https://github.com/jankovicsandras/imagetracerjava