Několik odkazů do začátku¶

Instalace Pythonu

PythonXY https://code.google.com/p/pythonxy/

WinPython http://winpython.github.io/

Anaconda https://store.continuum.io/cshop/anaconda/

Programování v Pythonu http://pythonic.eu/fjfi/

Stránky našeho předmětu ZDO http://www.kky.zcu.cz/cs/courses/zdo

Ukazky metod zpracovani obrazu http://scipy-lectures.github.io/packages/scikit-image/

Pusťme si ipython notebook¶

In [1]:

%pylab inline

# from pylab import *
# import cStringIO
import urllib
import scipy
import scipy.misc
import skimage
import skimage.data
from skimage.filters import threshold_otsu 
# from skimage.filters import gaussian_filter
from skimage.filters import gaussian as gaussian_filter
# from skimage.filter import threshold_otsu, gaussian_filter
from skimage.morphology import label
from scipy.ndimage.morphology import binary_closing, binary_erosion, binary_opening, binary_dilation

from skimage.measure import regionprops
from skimage.color import label2rgb
from skimage.io import imread
# import skimage.filter
# from skimage.filters import 

Populating the interactive namespace from numpy and matplotlib

Trocha Pythonu¶

In [3]:

print("hello")

hello

In [4]:

def mojeFunkce(vstup):
    vystup = vstup + 6
    return vystup

mojeFunkce(5)

Out[4]:

In [5]:

for i in range(2,5):
    print(i)

2
3
4

In [6]:

pole = ['Franta', 'Jakub', 'Marta']

for jmeno in pole:
    print(jmeno)

Franta
Jakub
Marta

Načtení a zobrazení obrázku z URL¶

In [19]:

# URL = "http://plzen.cz/cameraFeed.php"
URL = "http://vysilani.zaktv.cz/camera/namesti.jpg"
img = imread(URL)

imshow(img)
# show()

Out[19]:

<matplotlib.image.AxesImage at 0x150e9498470>

In [20]:

plt.figure(figsize=[10, 5])
subplot(131)
imshow(img[:, :, 0], cmap="Reds")
plt.axis("off")
subplot(132)
imshow(img[:, :, 1], cmap="Greens")
plt.axis("off")
subplot(133)
imshow(img[:, :, 2], cmap="Blues")
plt.axis("off")
img.shape

Out[20]:

(960, 1280, 3)

Zobrazení obrázku z kamery¶

In [66]:

URL = "http://uc452cam01-kky.fav.zcu.cz/snapshot.jpg"

In [67]:

img = imread(URL, as_grey=True)
imshow(img, cmap='gray')

Out[67]:

<matplotlib.image.AxesImage at 0x150f1df70f0>

In [31]:

# ukazkova data
img = skimage.data.coins() / 255.0
imshow(img, cmap='gray')

Out[31]:

<matplotlib.image.AxesImage at 0x150e9cf50b8>