void unsharpMask(SDL_Surface* inputSurface,SDL_Surface* outputSurface)
{
  Uint32* pixels = (Uint32*)inputSurface->pixels;
  Uint32* outputPixels=(Uint32*)outputSurface->pixels;
  Uint32* blurredPixels=(Uint32*)blurredSurface->pixels;
  meanBlur(infoSurface,blurredSurface);
  for (int i=0;i<inputSurface->h;i++)
    {
      for(int j=0;j<inputSurface->w;j++)
        {
            Uint8 rOriginal,gOriginal,bOriginal;
            Uint8 rBlurred,gBlurred,bBlurred;
            Uint32 rMask,gMask,bMask;
            Uint32 rFinal,gFinal,bFinal;
            SDL_GetRGB(blurredPixels[i*blurredSurface->w+j],blurredSurface->format,&rBlurred,&gBlurred,&bBlurred);
            SDL_GetRGB(pixels[i*inputSurface->w+j],inputSurface->format,&rOriginal,&gOriginal,&bOriginal);

            rMask=rOriginal - rBlurred;
            rFinal=rOriginal + rMask;
            if(rFinal>255) rFinal=255;
            if(rFinal<=0) rFinal=0;

            gMask=gOriginal - gBlurred;
            gFinal=gOriginal + gMask;
            if(gFinal>255) gFinal=255;
            if(gFinal<0) gFinal=0;

            bMask=bOriginal - bBlurred;
            bFinal=bOriginal + bMask;
            if(bFinal>255) bFinal=255;
            if(bFinal<0) bFinal=0;


            Uint32 pixel =SDL_MapRGB(outputSurface->format,rFinal,gFinal,bFinal);
            outputPixels[i *outputSurface->w+j]=pixel;
        }
    }
}