Python, cvzone - why do i get this ValueError?-CodePudding

I am trying to zoom into a picture with usage of two hands (gesture controled image zoom), but when trying to use two hands I get this error but I don't know why. When making my program I followed this tutorial: https://www.youtube.com/watch?v=VPaFV3QBsEw&t=675s. It's strange because the program worked for him.

This is the error I get:

  hands, img = detector.findHands(img)

ValueError: too many values to unpack (expected 2)

This is my code:

import cv2
from cvzone.HandTrackingModule import HandDetector
 
cap = cv2.VideoCapture(0)
cap.set(3, 1280)
cap.set(4, 720)
 
detector = HandDetector(detectionCon=0.7)
startDist = None
scale = 0
cx, cy = 500,500

while True:
    success, img = cap.read()
    hands, img = detector.findHands(img)
    img1 = cv2.imread("kung_fu_panda.png")
 
    if len(hands) == 2:
        
        if detector.fingersUp(hands[0]) == [1, 1, 0, 0, 0] and \
                detector.fingersUp(hands[1]) == [1, 1, 0, 0, 0]:
         
            lmList1 = hands[0]["lmList"]
            lmList2 = hands[1]["lmList"]
            # point 8 is the tip of the index finger
            if startDist is None:
                length, info, img = detector.findDistance(hands[0]["center"], hands[1]["center"], img)
                startDist = length
 
            length, info, img = detector.findDistance(hands[0]["center"], hands[1]["center"], img)
 
            scale = int((length - startDist) // 2)
            cx, cy = info[4:]
            print(scale)
    else:
        startDist = None
 
    try:
        h1, w1, _= img1.shape
        newH, newW = ((h1 scale)//2)*2, ((w1 scale)//2)*2
        img1 = cv2.resize(img1, (newW,newH))
 
        img[cy-newH//2:cy  newH//2, cx-newW//2:cx  newW//2] = img1
    except:
        pass
 
    cv2.imshow("Image", img)
    cv2.waitKey(1)

CodePudding user response：

cvzone library keeps updating their library every time. As you can see at the beginning of the video, when he imports the cvzone package he uses cvzone version 1.5.0.

I tried your code with other versions and got an error similar to yours but with version 1.5.0 your code worked great.

you can use my answer here to change the version of your cvzone library in your project to 1.5.0.