In this OpenCV Python article we are going to talk about Canny Edge Detection, but first of all let’s talk about OpenCV and Installation of OpenCV. What is OpenCV? OpenCV or Open Source Computer Vision Library is an …
In this Python OpenCV iam going to talk about creating Contour Detection Example. first of all let’s talk about Contour. Python OpenCV Tutorial: Creating a Contour Detection Example Contours can be explained simply as a curve joining all …
In this Python OpenCV tutorial we want to talk about Open Computer Vision Library, so computer vision is one of the best and most popular fields in these days, the primary purpose of computer vision is to analyze digital images …
In this OpenCV Python article i want to show a basics Color Detection Example in OpenCV. firs of all let’s talk about Color Detection in OpenCV. What is OpenCV Python Color Detection? Color detection in OpenCV Python involves …
In this OpenCV Python article we are going to talk about Color Spaces Introduction. so first of all let’s talk about different types of color spaces in OpenCV. What are OpenCV Color Spaces? In OpenCV Color spaces represent …
In this Python OpenCV article i want to show you doing of Arithmetic Operations On Images in OpenCV, so first of all let’s talk about Arithmetic Operations in OpenCV. What is Arithmetic Operations in Python OpenCV? Arithmetic …
In this Python OpenCV tutorial we are going to talk about Python OpenCV Color Trackbar, basically we using THRESH_BINARY and THRESH_TOZERO in this article with Color Trackbar. This is the complete source code for this article
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 |
import cv2 # Function to be called when the trackbar value changes (placeholder) def trackChanged(x): pass # Create a named window to display color trackbars cv2.namedWindow('Color Track Bar') # Define names for the trackbars hh = 'Max' hl = 'Min' # Create trackbars for maximum and minimum values cv2.createTrackbar("Max", 'Color Track Bar', 0, 255, trackChanged) cv2.createTrackbar("Min", 'Color Track Bar', 0, 255, trackChanged) # Load and resize an image img = cv2.imread('lena.tif') img = cv2.resize(img, (0, 0), fx=0.55, fy=0.55) while (True): # Get the current position of the trackbars hul = cv2.getTrackbarPos("Max", 'Color Track Bar') huh = cv2.getTrackbarPos("Min", 'Color Track Bar') # Apply thresholding with different methods based on the trackbar values ret, thresh1 = cv2.threshold(img, hul, huh, cv2.THRESH_BINARY) ret, thresh4 = cv2.threshold(img, hul, huh, cv2.THRESH_TOZERO) # Display the thresholded images cv2.imshow("thresh1", thresh1) cv2.imshow("thresh4", thresh4) # Break the loop if the ESC key is pressed if cv2.waitKey(1) == 27: break # Close all windows cv2.destroyAllWindows() |
…
In this article we are going to talk about Python OpenCV Image Blending, so first of all let’s talk about Image Blending in OpenCV. What is OpenCV Python Image Blending? Image blending in OpenCV refers to the process …
In this Python OpenCV article we are going to learn Reading Mp4 Video Formats, so first of all let’s talk about Python OpenCV. What is Python OpenCV ? OpenCV (Open Source Computer Vision Library) is free and …
In this Python OpenCV article iam going to talk about Python OpenCV Reading AVI Video Format, so first of all let’s talk that What is OpenCV. What is OpenCV ? OpenCV (Open Source Computer Vision) is free and …