# risanje histograma
y_pos = numpy.arange(len(histogram))
f = plt.figure(1)
plt.bar(y_pos, histogram, color="r")
plt.title("naslov")
plt.xlim([0, 256])

# izračunan po formuli iz predavanj
Q = len(histogram)
velikost = len(histogram)
novi_histogram = numpy.zeros(velikost)
for y in range(velikost):
    sum = 0
    for x in range(y+1):
        sum += histogram[x]

    novi_histogram[i] = (Q / img.shape[0] * img.shape[1]) * sum

# apply histogram
for i in range(dimenzija[0]):
    for j in range(dimenzija[1]):
        img[i,j] = hisogram[img[i,j]]