I tried torchvision pretrained models vgg16_bn and resnet50 to classify simple images, but they perform really bad.
Here are their performance examples:
vgg16_bn

Screenshot from 2018-03-31 00-25-23.jpg460×809 86.5 KB

resnet50

resnet50.png483×804 97.9 KB

I cant do transfer learning, because I dont have any label for these images. Anyone know how to improve the performance? Thanks