如何在使用Google colab时修复“ RuntimeError:无法打开shape_predictor_68_face_landmarks.dat”?

时间:2020-11-02 10:07:21

标签: python opencv image-processing webcam facial-identification

我正在google colab中编写以下python代码并收到错误:

代码

import cv2 
import dlib

cap = cv2.VideoCapture(0)

hog_face_detector = dlib.get_frontal_face_detector()

dlib_facelandmark = dlib.shape_predictor("shape_predictor_68_face_landmarks.dat")

while True: _, 
frame = cap.read() 
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

faces = hog_face_detector(gray)
for face in faces:

    face_landmarks = dlib_facelandmark(gray, face)

    for n in range(0, 16):
        x = face_landmarks.part(n).x
        y = face_landmarks.part(n).y
        cv2.circle(frame, (x, y), 1, (0, 255, 255), 1)


cv2.imshow("Face Landmarks", frame)

key = cv2.waitKey(1)
if key == 27:
    break
cap.release() 
cv2.destroyAllWindows()

错误

RuntimeError Traceback(最近一次通话) 在()中 6个hog_face_detector = dlib.get_frontal_face_detector() 7 ----> 8 dlib_facelandmark = dlib.shape_predictor(“ shape_predictor_68_face_landmarks.dat”) 9 真十时:

RuntimeError:无法打开shape_predictor_68_face_landmarks.dat

2 个答案:

答案 0 :(得分:0)

您的笔记本无法打开文件shape_predictor_68_face_landmarks.dat。发生这种情况的原因可能是该文件没有上传到您的笔记本上,或者因为您在dlib.shape_predictor("shape_predictor_68_face_landmarks.dat")中指定的路径错误。

以下是对代码的编辑,该编辑将自动下载bzip2文件,将其提取并将其设置为形状预测器。您可以通过更改.dat的链接来使用不同的!wget文件。

单元格1:

!wget   http://dlib.net/files/shape_predictor_68_face_landmarks.dat.bz2 # DOWNLOAD LINK

!bunzip2 /content/shape_predictor_68_face_landmarks.dat.bz2

datFile =  "/content/shape_predictor_68_face_landmarks.dat"

单元格2:

import cv2 
import dlib

cap = cv2.VideoCapture(0)

hog_face_detector = dlib.get_frontal_face_detector()

dlib_facelandmark = dlib.shape_predictor(datFile)

while True: _, 
frame = cap.read() 
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

faces = hog_face_detector(gray)
for face in faces:

    face_landmarks = dlib_facelandmark(gray, face)

    for n in range(0, 16):
        x = face_landmarks.part(n).x
        y = face_landmarks.part(n).y
        cv2.circle(frame, (x, y), 1, (0, 255, 255), 1)


cv2.imshow("Face Landmarks", frame)

key = cv2.waitKey(1)
if key == 27:
    break
cap.release() 
cv2.destroyAllWindows()

此外,请注意,如果您在Jupyter笔记本电脑上使用cv2.VideoCapture(0)打开相机,则该代码将无法运行,因为该代码在某些远程服务器上而不是在您的计算机上运行。查看代码段here,以获取有关如何在Colab中访问本地网络摄像头的示例。

答案 1 :(得分:0)

对我来说,解决类似问题的方法是按照此处的指导下载 Anaconda 3 并安装 dlib:https://learnopencv.com/install-dlib-on-windows/

我也把项目解释器改成了Anaconda(我用的是PyCharm)