Question

im试图对由php脚本传递到python脚本的照片进行人脸检测，该脚本使用openCV检测人脸并返回包含坐标的json。但是，从php脚本调用但从CLI调用时，python脚本什么也不返回，因此python脚本可以完美地工作。

php脚本：

public function detectFaceOCV($photo){
    $faces=[];
    $currentFace=0;
    $scriptLocation="/var/www/html/photos/face_detect_oCV.py";
    $command="python ".$scriptLocation." ".$photo;
   $exec = exec($command,$output,$status);
   var_dump($output);
   echo "<p/>";
}
$photo="/var/www/html/photos/ianmukunya.jpg";
detectFaceOCV($photo)

python脚本：

import sys
import numpy
import urllib
import cv2
import json

imagePath = sys.argv[1]
cascPath = "haarcascade_frontalface.xml"
snapArray=imagePath.split("/")

faceCascade = cv2.CascadeClassifier(cascPath)
# Read the image
image = cv2.imread(imagePath)

photograph=[]
faces=0
nyuso=[]
if urlimage == None:
    print ("no faces")    
else:
    gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

    # Detect faces in the image
    faces = faceCascade.detectMultiScale(gray,scaleFactor=1.4,minNeighbors=5, minSize=(130, 130),flags = cv2.cv.CV_HAAR_SCALE_IMAGE)
    for (x, y, w, h) in faces:
        #cv2.rectangle(image, (x, y), (x+w, y+h), (0, 255, 0), 2)
        nyuso.append({"x":x,"y":y,"w":w,"h":h})
    else:
        print(nyuso)

输出：

[]

从photos文件夹中的CLI运行python脚本时的输出：

[imukunya@li165-244 photos]$ python face_detect_oCV.py ianmukunya.jpg
[{'y': 33, 'x': 120, 'w': 253, 'h': 253}]

使用php脚本的人脸检测调用python脚本以使用打开的cv来检测人脸

0 个答案: