loading test images ...
total number of images in validation set:  2845
load test images done.
current test method: hog
idx: 1
current path: 08
Traceback (most recent call last):
  File "generate_fddb_result.py", line 440, in <module>
    img, bboxes = detectFaceDlibHog(hogFaceDetector, img)
  File "generate_fddb_result.py", line 101, in detectFaceDlibHog
    h = img.shape[0]
AttributeError: 'NoneType' object has no attribute 'shape'