def applyFilter(self, aImage):
oldtime = time.time()
# intialize a new filtered image
new_image = Image.new('RGB', aImage.size)
new_image_list = []
#get the pixels list from the original image
#pixels = aImage.getdata()
pixels = Lib.to2d(aImage)
height = len(pixels)
width = len(pixels[0])
print height, width
n = 0
p = 1
for x in range(width):
for y in range(height):
r = int(pixels[y][x][0]*self.amount)
g = int(pixels[y][x][1]*self.amount)
b = int(pixels[y][x][2]*self.amount)
if Lib.isprime(n):
r=g=b=0
p+=1
new_pixel = (r,g,b)
new_image_list.append(new_pixel)
n+=1
new_image.putdata(new_image_list)
timetaken = time.time()-oldtime
print "primes:", n-p, ", out of", n , "pixels", ", it took", timetaken, "seconds"
return new_image
