How to realize virtual drag-and-drop effect by using gesture recognition in OpenCV

This article mainly introduces OpenCV how to use gesture recognition to achieve virtual drag and drop effect, the article is very detailed, has a certain reference value, interested friends must read it!

The first step

Set the display box through opencv and call the camera to display the current screen.

Import cv2cap = cv2.VideoCapture (0) cap.set (3Power1280) cap.set (4720) while True: succes, img = cap.read () cv2.imshow ("Image", img) cv2.waitKey (1) step 2

To find the hand in the current screen, this article will use the hand tracking module in cv zone

From cvzone.HandTrackingModule import HandDetectordetector = HandDetector (detectionCon=0.8) # changed the default confidence level to make its detection more accurate

Find the complete code for the hand

Import cv2from cvzone.HandTrackingModule import HandDetectorcap = cv2.VideoCapture (0) cap.set (3Power1280) cap.set (4720) detector = HandDetector (detectionCon=0.8) while True: succes, img = cap.read () detector.findHands (img) lmList, _ = detector.findPosition (img) cv2.imshow ("Image", img) cv2.waitKey (1)

Step three

The third step is to create a square first

Cv2.rectangle (img, (100100), (300300), (0,0,255), cv2.FILLED)

Then check to see if our index finger enters the box, and if so, the box changes color

If lmList: cursor = lmList [8] if 100