Clicked Event OpenCV Python With Source Code
The Clicked Event OpenCV Python was developed using Python OpenCV, This Project With Source Code we will learn about Mouse Events in OpenCV Python. We will be creating a black background and on left mouse click print X and Y Co-ordinates and on right mouse click print RGB Value of that pixel.
A Mouse Events OpenCV Algorithm Computer Vision for reading and showing images and image manipulation. Matplotlib for data visualization Read and Show Image for Mouse Events OpenCV.
What is OpenCV?
OpenCV (Open Source Computer Vision Library) is an open-source computer vision and machine learning software library. OpenCV was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in commercial products.
In this Python OpenCV Project also includes a downloadable Python Project With Source Code for free, just find the downloadable source code below and click to start downloading.
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To start executing Clicked Event OpenCV Python With Source Code, make sure that you have installed Python 3.9 and PyCharm on your computer.
Clicked Event OpenCV Python With Source Code : Steps on how to run the project
Time needed: 5 minutes.
These are the steps on how to run Clicked Event OpenCV Python With Source Code
- Step 1: Download the given source code below.
First, download the given source code below and unzip the source code.
- Step 2: Import the project to your PyCharm IDE.
Next, import the source code you’ve download to your PyCharm IDE.
- Step 3: Run the project.
last, run the project with the command “py main.py”
import cv2 as cv import numpy as np from matplotlib import pyplot as plt
Complete Source Code
import cv2 as cv import numpy as np from matplotlib import pyplot as plt def click_event(event, x, y, flags, params): ''' Left Click to get the x, y coordinates. Right Click to get BGR color scheme at that position. ''' text = '' font = cv.FONT_HERSHEY_COMPLEX color = (255, 0, 0) if event == cv.EVENT_LBUTTONDOWN: print(x, ",", y) text = str(x) + "," + str(y) color = (0, 255, 0) elif event == cv.EVENT_RBUTTONDOWN: b = img[y, x, 0] g = img[y, x, 1] r = img[y, x, 2] text = str(b) + ',' + str(g) + ',' + str(r) color = (0, 0, 255) cv.putText(img, text, (x, y), font, 0.5, color, 1, cv.LINE_AA) cv.imshow('image', img) # img = np.zeros((600, 600, 3), np.uint8) img = cv.imread('./img/sea.jpg') print(img) cv.imshow('image', img) cv.setMouseCallback('image', click_event) cv.waitKey() cv.destroyAllWindows()
Download Source Code below
Anyway, if you want to level up your programming knowledge, especially Python OpenCV, try this new article I’ve made for you Best OpenCV Projects With Source Code For Beginners 2021.
OpenCV provides a facility to use the mouse as a paint brush or a drawing tool. Whenever any mouse event occurs on the window screen, it can draw anything. Mouse events can be left-button down, left-button up, double-click, etc. It gives us the coordinates (x,y) for every mouse event.
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