Image Improvement 
second attempt
Vasiliki Liontou 
26/11/2017

ImproveP[url_]:=(image=URLExecute[url];
image=Lighter[Sharpen[ColorNegate[image],10]];
image=Lighter[ColorReplace[image,Gray->White, 0.20]];
image=ColorReplace[image,Black-> Black,0.35])

ImproveP["http://drorbn.net/bbs/shots/17-1750-171013-121552.jpg"]

ImproveP["http://drorbn.net/bbs/shots/17-1750-171013-121553.jpg"]