Source Code Does't Work

Python
1

Hi,

I am trying to create GUI tocheck cascade parameters on haarcascade project. It iI couldn’t find why. Could anyone check this?

The code is:

import cv2
path = r"cascade.xml"
frameWidth = 1024  # DISPLAY WIDTH
frameHeight = 768  # DISPLAY HEIGHT
color = (255, 0, 255)
objectName = AOL
cap = cv2.VideoCapture(r"1.avi")
cap.set(3, frameWidth)
cap.set(4, frameHeight)
def empty(a):
    pass

cv2.namedWindow("Result")
cv2.resizeWindow("Result", frameWidth, frameHeight + 100)
cv2.createTrackbar("Scale", "Result", 400, 1000, empty)
cv2.createTrackbar("Neig", "Result", 8, 20, empty)
cv2.createTrackbar("Min Area", "Result", 0, 100000, empty)
cv2.createTrackbar("Brightness", "Result", 180, 255, empty)

while True:

    ret, frame = cap.read()
        if ret is not True:
        break

cameraBrightness = cv2.getTrackbarPos("Brightness", "Result")
    cap.set(10, cameraBrightness)

 success, img = cap.read()
    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

scaleVal = 1 + (cv2.getTrackbarPos("Scale", "Result") / 1000)
    neig = cv2.getTrackbarPos("Neig", "Result")
    objects = cascade.detectMultiScale(gray, scaleVal, neig)
    for (x, y, w, h) in objects:
        area = w * h
        minArea = cv2.getTrackbarPos("Min Area", "Result")
        if area > minArea:
            cv2.rectangle(img, (x, y), (x + w, y + h), color, 3)
            cv2.putText(img, objectName, (x, y - 5), cv2.FONT_HERSHEY_COMPLEX_SMALL, 1, color, 2)
            roi_color = img[y:y + h, x:x + w]
2

please use named constants.

  • CAP_PROP_FRAME_WIDTH
  • CAP_PROP_FRAME_HEIGHT
  • CAP_PROP_BRIGHTNESS

I don’t understand. please describe the issue.