test.py

import os
from options.test_options import TestOptions
from data import CreateDataLoader
from models import create_model
from util.visualizer import save_images
from util import html


if __name__ == '__main__':
    opt = TestOptions().parse()
    # hard-code some parameters for test
    opt.num_threads = 1   # test code only supports num_threads = 1
    opt.batch_size = 1    # test code only supports batch_size = 1
    opt.serial_batches = True  # no shuffle
    opt.no_flip = True    # no flip
    opt.display_id = -1   # no visdom display
    data_loader = CreateDataLoader(opt)
    dataset = data_loader.load_data()
    model = create_model(opt)
    model.setup(opt)
    # create a website
    web_dir = os.path.join(opt.results_dir, opt.name, '%s_%s' % (opt.phase, opt.epoch))
    webpage = html.HTML(web_dir, 'Experiment = %s, Phase = %s, Epoch = %s' % (opt.name, opt.phase, opt.epoch))
    # test with eval mode. This only affects layers like batchnorm and dropout.
    # pix2pix: we use batchnorm and dropout in the original pix2pix. You can experiment it with and without eval() mode.
    # CycleGAN: It should not affect CycleGAN as CycleGAN uses instancenorm without dropout.
    if opt.eval:
        model.eval()
    # added for cityscapes.
    if opt.cityscapes:
        with open(opt.cityscape_fnames) as f:
            f_names = f.read().split('\n')

    for i, data in enumerate(dataset):
        if i >= opt.num_test:
            break
        model.set_input(data)
        model.test()
        visuals = model.get_current_visuals()
        img_path = model.get_image_paths()
        if opt.cityscapes:
            index = int(os.path.basename(img_path[0]).split("_")[0]) - 1  # cityscapes
        if i % 5 == 0:
            print('processing (%04d)-th image... %s' % (i, img_path))
        if not opt.cityscapes:
            save_images(webpage, visuals, img_path, aspect_ratio=opt.aspect_ratio, width=opt.display_winsize, citysc=False)
        else:
            save_images(webpage, visuals, img_path, aspect_ratio=opt.aspect_ratio, width=opt.display_winsize,
                        f_name=f_names[index], citysc=True)  # cityscapes
    # save the website
    webpage.save()