错误：我无法将我的图像从 bgr 转换为 rgb：TypeError: Expected Ptr<cv::umat> 对于参数“src”</cv::umat>

Question

#error: im not able to convert my images from bgr to rgb

images = []
path = 'E:\subjects\AI\Face-Mask-Detection-master\without-mask-detections'
listimages=os.listdir(path)
encode_list = []

for img in listimages:
        images.append(img)
        img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
        encode = face_recognition.face_encodings(img)
        encode_list.append(encode)

print(images)
#encodeListKnown= find_encoding(images)
#print(len(encodeListKnown))

Answer 1

The file name you are using (img) does not include the full path and cannot be opened. Also, your code does not open the image file. You should build the full path and open it using:

for file in listimages:
    img = cv2.imread(os.path.join(path, file))
    images.append(img)
    img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
    encode = face_recognition.face_encodings(img)
    encode_list.append(encode)