Object tracking with Mean-shift – OpenCV 3.4 with python 3 Tutorial 29
We will see how to track an object based on colors. To do this I used the OpenCV Mean-shift algorithm. This way…
Histogram and Back Projection – OpenCV 3.4 with python 3 Tutorial 28
[python] import cv2 import numpy as np from matplotlib import pyplot as plt original_image = cv2.imread("goalkeeper.jpg") hsv_original = cv2.cvtColor(original_image, cv2.COLOR_BGR2HSV) roi =…
Mouse Events – OpenCV 3.4 with python 3 Tutorial 27
Draw circles: [python] import cv2 import numpy as np def mouse_drawing(event, x, y, flags, params): if event == cv2.EVENT_LBUTTONDOWN: print("Left click")…
Feature Matching (Brute-Force) – OpenCV 3.4 with python 3 Tutorial 26
In this tutorial we will talk about Feature Matching with OpenCV. In my example I used the same book cover but in…
Feature detection (SIFT, SURF, ORB) – OpenCV 3.4 with python 3 Tutorial 25
We’re going to learn in this tutorial how to find features on an image.We have thre different algorythms that we can use:…
Image Pyramids (Blending and reconstruction) – OpenCV 3.4 with python 3 Tutorial 24
Source code Image reconstruction: [python] import cv2 import numpy as np img = cv2.imread("hand.jpg") # Gaussian Pyramid layer = img.copy() gaussian_pyramid =…
Image Pyramids – OpenCV 3.4 with python 3 Tutorial 23
Source code: [python] import cv2 import numpy as np img = cv2.imread("hand.jpg") # Gaussian Pyramid layer = img.copy() gaussian_pyramid = [layer] for…
Corners detection – OpenCV 3.4 with python 3 Tutorial 22
Corners detection image: [python] import cv2 import numpy as np img = cv2.imread("squares.jpg") gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) corners = cv2.goodFeaturesToTrack(gray, 150, 0.8,…
Lines detection with Hough Transform – OpenCV 3.4 with python 3 Tutorial 21
We’re going to learn in this tutorial how to detect the lines of the road in a live video using Opencv with…
