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# OpenCV (ppc 200)
###ENG
[PL](#pl-version)
In the task we get an OpenCV cascade classifier and a lot of images in a [package](task.zip).
Each of the images has a small hashcode embedded.
The goal is to see which of the pictures gets selected by OpenCV.
We simply loaded the classifier and run:
```python
import os
import cv2
def main():
cascade = cv2.CascadeClassifier('/tmp/task/any.xml')
basedir = "/tmp/task/images"
for filename in os.listdir(basedir):
img = cv2.imread(basedir + "/" + filename)
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
flags = cascade.detectMultiScale(gray, 1.3, 5)
if len(flags) > 0:
print(filename)
for (x, y, w, h) in flags:
cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 0), 2)
cv2.imshow('img', img)
cv2.waitKey(0)
cv2.destroyAllWindows()
main()
```
And we got image 240.bmp with `FWqM5vfOKvY0T8t3ho6L`
###PL version
W zadaniu dostajemy klasyfikator OpenCV i sporo obrazków w [paczce](task.zip).
Każdy obrazek zawiera hashcode.
Celem jest znalezienie obrazka wybranego przez OpenCV.
Po prostu uruchomiliśmy klasyfikator:
```python
import os
import cv2
def main():
cascade = cv2.CascadeClassifier('/tmp/task/any.xml')
basedir = "/tmp/task/images"
for filename in os.listdir(basedir):
img = cv2.imread(basedir + "/" + filename)
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
flags = cascade.detectMultiScale(gray, 1.3, 5)
if len(flags) > 0:
print(filename)
for (x, y, w, h) in flags:
cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 0), 2)
cv2.imshow('img', img)
cv2.waitKey(0)
cv2.destroyAllWindows()
main()
```
Co wskazało 240.bmp z `FWqM5vfOKvY0T8t3ho6L`
