pycharmers.opencv.cascade module

pycharmers.opencv.cascade.cascade_creator(cascade)

Create a cv2.CascadeClassifier instance. :param cascade: The identifier of Cascades. :type cascade: str, cv2.CascadeClassifier

Returns

cv2.CascadeClassifier

Examples

>>> from pycharmers.opencv import SAMPLE_LENA_IMG, cv2read_mpl, cv2plot, cascade_creator, draw_bboxes_xywh
>>> cascade = cascade_creator(cascade="haarcascades:haarcascade_frontalface_alt2")
>>> gray = cv2read_mpl(SAMPLE_LENA_IMG, 0)
>>> for bbox in cascade.detectMultiScale(gray):
...     draw_bboxes_xywh(
...         frame=gray, bboxes=bbox
...     )
>>> ax = cv2plot(gray)

pycharmers.opencv.cascade.cascade_detection_create(cascade)

Create a cascade_detection function.

Parameters

cascade (str, cv2.CascadeClassifier) – Identifier for cv2.CascadeClassifier

Returns

cascade_detection

Examples

>>> import cv2
>>> from pycharmers.opencv import SAMPLE_LENA_IMG, cv2read_mpl, cv2plot, cascade_detection_create, draw_bboxes_ltrb
>>> cascade_detection = cascade_detection_create(cascade="haarcascades:haarcascade_frontalface_alt2")
>>> img = cv2.cvtColor(cv2.imread(SAMPLE_LENA_IMG), cv2.COLOR_BGR2RGB)
>>> for bbox in cascade_detection(img):
...     draw_bboxes_ltrb(frame=img, bboxes=bbox)
>>> ax = cv2plot(img)