我有一个flask应用程序，该应用程序允许用户上传图像，然后执行一些多步骤处理。
我正在尝试使用cv2.imread在cv2中读取上传的图像，但是该函数从不返回它，只是挂在cv2.imread
调用方法
def remove_skin_color(filename):
print('removing skin color for {}'.format(filename))
colorDetection = ColorDetector()
img_loc = os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], filename)
print('processing image {}'.format(img_loc))
no_skin_img = colorDetection.get_removed_skin(img_loc=img_loc)
cv2.imwrite(os.path.join(app.root_path, IMG_FOLDER, filename), no_skin_img)
print('writing image done')
return filename
日志
[Sat Apr 27 14:05:53.119646 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] request method is POST\r
[Sat Apr 27 14:05:53.122573 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] True\r
[Sat Apr 27 14:05:53.122573 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] receiving ... file.JPEG\r
[Sat Apr 27 14:05:53.122573 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] 1556366753_file.JPEG\r
[Sat Apr 27 14:05:53.126479 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] removing skin color for 1556366753_file.JPEG\r
[Sat Apr 27 14:05:53.126479 2019] [wsgi:error] [pid 12364:tid 1328] [client 197.125.110.218:39284] processing image C:\\wamp64\\www\\app\\uploads\\1556366753_file.JPEG\r
被调用的方法
def get_removed_skin(self, bn_img=None, img_loc=None):
try:
if img_loc:
sourceImage = cv2.imread(img_loc) #code hangs here
else:
sourceImage = bn_img
except Exception as e:
print(e)
# Constants for finding range of skin color in YCrCb
min_YCrCb = np.array([0, 133, 77], np.uint8)
max_YCrCb = np.array([255, 173, 127], np.uint8)
# Convert image to YCrCb
imageYCrCb = cv2.cvtColor(sourceImage, cv2.COLOR_BGR2YCR_CB)
# Find region with skin tone in YCrCb image
skinRegion = cv2.inRange(imageYCrCb, min_YCrCb, max_YCrCb)
# Do contour detection on skin region
_, contours, hierarchy = cv2.findContours(skinRegion, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cv2.fillPoly(sourceImage, pts=contours, color=(255, 255, 255))
return sourceImage
注释：正在Wamp（Apache）服务器+笔记本电脑上的WSGI上运行此应用程序
虚拟主机配置
# Virtual Hosts
#
<VirtualHost *:80>
ServerName localhost
ServerAlias localhost
ErrorLog ${INSTALL_DIR}/www/app/app.log
WSGIScriptAlias / "${INSTALL_DIR}/www/app/web.wsgi"
DocumentRoot "${INSTALL_DIR}/www/app"
<Directory "${INSTALL_DIR}/www/app/">
Options +Indexes +Includes +FollowSymLinks +MultiViews +ExecCGI
AllowOverride All
#Require local
Require all granted
</Directory>
</VirtualHost>
当我在本地运行该应用程序时，它可以按预期运行，没有任何问题
我已经简化了以下流程，并且仍然是同一问题
def upload_file():
print('request method is {}'.format(request.method))
if request.method == 'POST':
# check if the post request has the file part
if 'file' not in request.files:
print('file not in request.files')
return redirect(request.url)
file = request.files['file']
if file.filename == '':
print('filename is {}'.format(file.filename))
return redirect(request.url)
print(file and allowed_file(file.filename))
if file and allowed_file(file.filename):
print('receiving ... ', file.filename)
filename = secure_filename(file.filename)
ts = int(time.time())
file_name = file_name_template.format(ts, filename)
print(file_name)
filePath = os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], file_name)
file.save(filePath)
# file.save(os.path.join(app.config['UPLOAD_FOLDER'], file_name))
img = cv2.imread(filePath)
print(' file has been read') #this line never gets printed
out_image_name = remove_skin_color(file_name)
json_data = color_palette(out_image_name)
return json_data