TF inference: convert images to float
TF inference: convert images to float

ethantang95/DIGITS-GAN,ethantang95/DIGITS-GAN,gheinrich/DIGITS-GAN,gheinrich/DIGITS-GAN,ethantang95/DIGITS-GAN,gheinrich/DIGITS-GAN,gheinrich/DIGITS-GAN,ethantang95/DIGITS-GAN