cyscn

if your opencv version 3.X, open `OPENCV_VERSION := 3` in Makefile.config OR， add a line： `LIBRARIES += opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs opencv_videoio` in Makefile.config

the same problem..have you solved it？

@Steffgroe you just need to change the 47 line of .../pytorch-ssd/vision/datasets/voc_dataset.py to self.class_names = ('BACKGROUND', 'person')

Make sure there are no uppercase letters in your voc dataset ，like “PERSON”，“DOG” in pytorch-ssd/vision/datasets/voc_dataset.py line 99, `class_name = object.find('name').text.lower().strip()` Only lowercase is allowed by default OR，change to `class_name =...