OpenCV + Python面部检测器使用鼠标滚轮更改矩形大小

问题描述 投票:0回答:1

我想使用鼠标滚轮更改此面部检测器的矩形大小:

import cv2

# Load the cascade
face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
# Read the input image
img = cv2.imread('test.jpg')
# Convert into grayscale
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# Detect faces
faces = face_cascade.detectMultiScale(gray, 1.1, 4)
# Draw rectangle around the faces
for (x, y, w, h) in faces:
    cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0), 2)
# Display the output
cv2.imshow('img', img)
cv2.waitKey()

xml:https://raw.githubusercontent.com/opencv/opencv/master/data/haarcascades/haarcascade_frontalface_default.xml

但是我不知道该怎么做

python opencv face-detection rectangles cv2
1个回答
0
投票
您可以在代码的cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0), 2)行进行更改以查看更多详细信息here,以检查函数的每个参数详细信息
© www.soinside.com 2019 - 2024. All rights reserved.