Ejemplo n.º 1
0
def main(args):
    # =====================================
    # Load config
    # =====================================
    with open(os.path.join(args.output_dir, 'config.json')) as f:
        config = json.load(f)
    args.__dict__.update(config)

    # =====================================
    # Preparation
    # =====================================
    data_file = os.path.join(RAW_DATA_DIR, "ComputerVision", "dSprites",
                             "dsprites_ndarray_co1sh3sc6or40x32y32_64x64.npz")

    # It is already in the range [0, 1]
    with np.load(data_file, encoding="latin1") as f:
        x_train = f['imgs']

    x_train = np.expand_dims(x_train.astype(np.float32), axis=-1)

    # =====================================
    # Instantiate models
    # =====================================
    if args.enc_dec_model == "1Konny":
        encoder = Encoder_1Konny(args.z_dim, stochastic=True)
        decoder = Decoder_1Konny()
        disc_z = DiscriminatorZ_1Konny()
    else:
        raise ValueError("Do not support enc_dec_model='{}'!".format(
            args.enc_dec_model))

    model = AAE([64, 64, 1],
                args.z_dim,
                encoder=encoder,
                decoder=decoder,
                discriminator_z=disc_z,
                rec_x_mode=args.rec_x_mode,
                stochastic_z=args.stochastic_z,
                use_gp0_z=True,
                gp0_z_mode=args.gp0_z_mode)

    loss_coeff_dict = {
        'rec_x': args.rec_x_coeff,
        'G_loss_z1_gen': args.G_loss_z1_gen_coeff,
        'D_loss_z1_gen': args.D_loss_z1_gen_coeff,
        'gp0_z': args.gp0_z_coeff,
    }

    model.build(loss_coeff_dict)
    SimpleParamPrinter.print_all_params_list()

    # =====================================
    # TF Graph Handler
    asset_dir = make_dir_if_not_exist(os.path.join(args.output_dir, "asset"))
    img_eval = remove_dir_if_exist(os.path.join(asset_dir, "img_eval"),
                                   ask_4_permission=False)
    img_eval = make_dir_if_not_exist(img_eval)

    img_x_rec = make_dir_if_not_exist(os.path.join(img_eval, "x_rec"))
    img_z_rand_2_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_rand_2_traversal"))
    img_z_cond_all_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_cond_all_traversal"))
    img_z_cond_1_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_cond_1_traversal"))
    img_z_corr = make_dir_if_not_exist(os.path.join(img_eval, "z_corr"))
    img_z_dist = make_dir_if_not_exist(os.path.join(img_eval, "z_dist"))
    img_z_stat_dist = make_dir_if_not_exist(
        os.path.join(img_eval, "z_stat_dist"))
    img_rec_error_dist = make_dir_if_not_exist(
        os.path.join(img_eval, "rec_error_dist"))

    model_dir = make_dir_if_not_exist(os.path.join(args.output_dir,
                                                   "model_tf"))

    train_helper = SimpleTrainHelper(log_dir=None, save_dir=model_dir)
    # =====================================

    # =====================================
    # Training Loop
    # =====================================
    config_proto = tf.ConfigProto(allow_soft_placement=True)
    config_proto.gpu_options.allow_growth = True
    config_proto.gpu_options.per_process_gpu_memory_fraction = 0.9
    sess = tf.Session(config=config_proto)

    # Load model
    train_helper.load(sess, load_step=args.load_step)

    #'''
    # Reconstruction
    # ======================================= #
    seed = 389
    x = x_train[np.arange(seed, seed + 64)]

    img_file = os.path.join(img_x_rec, 'x_rec_train.png')
    model.reconstruct_images(img_file,
                             sess,
                             x,
                             block_shape=[8, 8],
                             batch_size=-1,
                             dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #

    # z random/conditional traversal
    # ======================================= #
    # Plot z cont with z cont
    z_zero = np.zeros([args.z_dim], dtype=np.float32)
    z_rand = np.random.randn(args.z_dim)
    z_start, z_stop = -4, 4
    num_points = 8

    for i in range(args.z_dim):
        for j in range(i + 1, args.z_dim):
            print("Plot random 2 comps z traverse with {} and {} components!".
                  format(i, j))

            img_file = os.path.join(img_z_rand_2_traversal,
                                    'z[{},{},zero].png'.format(i, j))
            model.rand_2_latents_traverse(
                img_file,
                sess,
                default_z=z_zero,
                z_comp1=i,
                start1=z_start,
                stop1=z_stop,
                num_points1=num_points,
                z_comp2=j,
                start2=z_start,
                stop2=z_stop,
                num_points2=num_points,
                batch_size=args.batch_size,
                dec_output_2_img_func=binary_float_to_uint8)

            img_file = os.path.join(img_z_rand_2_traversal,
                                    'z[{},{},rand].png'.format(i, j))
            model.rand_2_latents_traverse(
                img_file,
                sess,
                default_z=z_rand,
                z_comp1=i,
                start1=z_start,
                stop1=z_stop,
                num_points1=num_points,
                z_comp2=j,
                start2=z_stop,
                stop2=z_stop,
                num_points2=num_points,
                batch_size=args.batch_size,
                dec_output_2_img_func=binary_float_to_uint8)

    seed = 389
    z_start, z_stop = -4, 4
    num_itpl_points = 8

    for n in range(seed, seed + 30):
        print("Plot conditional all comps z traverse with test sample {}!".
              format(n))

        x = x_train[n]
        img_file = os.path.join(img_z_cond_all_traversal,
                                'x_train{}.png'.format(n))
        model.cond_all_latents_traverse(
            img_file,
            sess,
            x,
            start=z_start,
            stop=z_stop,
            num_itpl_points=num_itpl_points,
            batch_size=args.batch_size,
            dec_output_2_img_func=binary_float_to_uint8)

    seed = 64
    z_start, z_stop = -4, 4
    num_itpl_points = 8
    print("Plot conditional 1 comp z traverse!")
    for i in range(args.z_dim):
        x = x_train[seed:seed + 64]
        img_file = os.path.join(
            img_z_cond_1_traversal,
            'x_train[{},{}]_z{}.png'.format(seed, seed + 64, i))
        model.cond_1_latent_traverse(
            img_file,
            sess,
            x,
            z_comp=i,
            start=z_start,
            stop=z_stop,
            num_itpl_points=num_itpl_points,
            batch_size=args.batch_size,
            dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #
    # '''

    # z correlation matrix
    # ======================================= #
    data = x_train

    all_z = []
    for batch_ids in iterate_data(len(data), args.batch_size, shuffle=False):
        x = data[batch_ids]

        z = model.encode(sess, x)
        assert len(
            z.shape) == 2 and z.shape[1] == args.z_dim, "z.shape: {}".format(
                z.shape)

        all_z.append(z)

    all_z = np.concatenate(all_z, axis=0)

    print("Start plotting!")
    plot_corrmat_with_histogram(os.path.join(img_z_corr, "corr_mat.png"),
                                all_z)
    plot_comp_dist(os.path.join(img_z_dist, 'z_{}'), all_z, x_lim=(-5, 5))
    print("Done!")
    # ======================================= #

    # '''
    # z gaussian stddev
    # ======================================= #
    print("\nPlot z mean and stddev!")
    data = x_train

    all_z_mean = []
    all_z_stddev = []

    for batch_ids in iterate_data(len(data), args.batch_size, shuffle=False):
        x = data[batch_ids]

        z_mean, z_stddev = sess.run(model.get_output(['z_mean', 'z_stddev']),
                                    feed_dict={
                                        model.is_train: False,
                                        model.x_ph: x
                                    })

        all_z_mean.append(z_mean)
        all_z_stddev.append(z_stddev)

    all_z_mean = np.concatenate(all_z_mean, axis=0)
    all_z_stddev = np.concatenate(all_z_stddev, axis=0)

    plot_comp_dist(os.path.join(img_z_stat_dist, 'z_mean_{}.png'),
                   all_z_mean,
                   x_lim=(-5, 5))
    plot_comp_dist(os.path.join(img_z_stat_dist, 'z_stddev_{}.png'),
                   all_z_stddev,
                   x_lim=(0, 3))
    # ======================================= #
    # '''

    # Decoder sensitivity
    # ======================================= #
    z_start = -3
    z_stop = 3
    for i in range(args.z_dim):
        print("\nPlot rec error distribution for z component {}!".format(i))

        all_z1 = np.array(all_z, copy=True, dtype=np.float32)
        all_z2 = np.array(all_z, copy=True, dtype=np.float32)

        all_z1[:, i] = z_start
        all_z2[:, i] = z_stop

        all_x_rec1 = []
        all_x_rec2 = []
        for batch_ids in iterate_data(len(x_train),
                                      args.batch_size,
                                      shuffle=False):
            z1 = all_z1[batch_ids]
            z2 = all_z2[batch_ids]

            x1 = model.decode(sess, z1)
            x2 = model.decode(sess, z2)

            all_x_rec1.append(x1)
            all_x_rec2.append(x2)

        all_x_rec1 = np.concatenate(all_x_rec1, axis=0)
        all_x_rec2 = np.concatenate(all_x_rec2, axis=0)

        rec_errors = np.sum(np.reshape((all_x_rec1 - all_x_rec2)**2,
                                       [len(x_train), 28 * 28]),
                            axis=1)
        plot_comp_dist(
            os.path.join(
                img_rec_error_dist,
                'rec_error[zi={},{},{}].png'.format(i, z_start, z_stop)),
            rec_errors)
Ejemplo n.º 2
0
def main(args):
    # =====================================
    # Load config
    # =====================================
    with open(os.path.join(args.output_dir, 'config.json')) as f:
        config = json.load(f)
    args.__dict__.update(config)

    # =====================================
    # Preparation
    # =====================================
    celebA_loader = TFCelebALoader(root_dir=args.celebA_root_dir)
    num_train = celebA_loader.num_train_data
    num_test = celebA_loader.num_test_data

    img_height, img_width = args.celebA_resize_size, args.celebA_resize_size
    celebA_loader.build_transformation_flow_tf(
        *celebA_loader.get_transform_fns("1Konny",
                                         resize_size=args.celebA_resize_size))

    # =====================================
    # Instantiate models
    # =====================================
    # Only use activation for encoder and decoder
    if args.activation == "relu":
        activation = tf.nn.relu
    elif args.activation == "leaky_relu":
        activation = tf.nn.leaky_relu
    else:
        raise ValueError("Do not support '{}' activation!".format(
            args.activation))

    if args.enc_dec_model == "1Konny":
        # assert args.z_dim == 65, "For 1Konny, z_dim must be 65. Found {}!".format(args.z_dim)

        encoder = Encoder_1Konny(args.z_dim,
                                 stochastic=True,
                                 activation=activation)
        decoder = Decoder_1Konny([img_height, img_width, 3],
                                 activation=activation,
                                 output_activation=tf.nn.sigmoid)
        disc_z = DiscriminatorZ_1Konny()
    else:
        raise ValueError("Do not support encoder/decoder model '{}'!".format(
            args.enc_dec_model))

    model = AAE([img_height, img_width, 3],
                args.z_dim,
                encoder=encoder,
                decoder=decoder,
                discriminator_z=disc_z,
                rec_x_mode=args.rec_x_mode,
                stochastic_z=args.stochastic_z,
                use_gp0_z=True,
                gp0_z_mode=args.gp0_z_mode)

    loss_coeff_dict = {
        'rec_x': args.rec_x_coeff,
        'G_loss_z1_gen': args.G_loss_z1_gen_coeff,
        'D_loss_z1_gen': args.D_loss_z1_gen_coeff,
        'gp0_z': args.gp0_z_coeff,
    }

    model.build(loss_coeff_dict)
    SimpleParamPrinter.print_all_params_list()

    # =====================================
    # TF Graph Handler
    asset_dir = make_dir_if_not_exist(os.path.join(args.output_dir, "asset"))
    img_eval = remove_dir_if_exist(os.path.join(asset_dir, "img_eval"),
                                   ask_4_permission=False)
    img_eval = make_dir_if_not_exist(img_eval)

    img_x_gen = make_dir_if_not_exist(os.path.join(img_eval, "x_gen"))
    img_x_rec = make_dir_if_not_exist(os.path.join(img_eval, "x_rec"))
    img_z_rand_2_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_rand_2_traversal"))
    img_z_cond_all_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_cond_all_traversal"))
    img_z_cond_1_traversal = make_dir_if_not_exist(
        os.path.join(img_eval, "z_cond_1_traversal"))
    img_z_corr = make_dir_if_not_exist(os.path.join(img_eval, "z_corr"))
    img_z_dist = make_dir_if_not_exist(os.path.join(img_eval, "z_dist"))
    img_z_stat_dist = make_dir_if_not_exist(
        os.path.join(img_eval, "z_stat_dist"))
    # img_rec_error_dist = make_dir_if_not_exist(os.path.join(img_eval, "rec_error_dist"))

    model_dir = make_dir_if_not_exist(os.path.join(args.output_dir,
                                                   "model_tf"))
    train_helper = SimpleTrainHelper(log_dir=None, save_dir=model_dir)
    # =====================================

    # =====================================
    # Training Loop
    # =====================================
    config_proto = tf.ConfigProto(allow_soft_placement=True)
    config_proto.gpu_options.allow_growth = True
    config_proto.gpu_options.per_process_gpu_memory_fraction = 0.9
    sess = tf.Session(config=config_proto)

    # Load model
    train_helper.load(sess, load_step=args.load_step)

    # '''
    # Generation
    # ======================================= #
    z = np.random.randn(64, args.z_dim)

    img_file = os.path.join(img_x_gen, 'x_gen_test.png')
    model.generate_images(img_file,
                          sess,
                          z,
                          block_shape=[8, 8],
                          batch_size=args.batch_size,
                          dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #
    # '''

    # '''
    # Reconstruction
    # ======================================= #
    seed = 389
    x = celebA_loader.sample_images_from_dataset(sess, 'test',
                                                 list(range(seed, seed + 64)))

    img_file = os.path.join(img_x_rec, 'x_rec_test.png')
    model.reconstruct_images(img_file,
                             sess,
                             x,
                             block_shape=[8, 8],
                             batch_size=-1,
                             dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #
    # '''

    # '''
    # z random traversal
    # ======================================= #
    if args.z_dim <= 5:
        print("z_dim = {}, perform random traversal!".format(args.z_dim))

        # Plot z cont with z cont
        z_zero = np.zeros([args.z_dim], dtype=np.float32)
        z_rand = np.random.randn(args.z_dim)
        z_start, z_stop = -4, 4
        num_points = 8

        for i in range(args.z_dim):
            for j in range(i + 1, args.z_dim):
                print(
                    "Plot random 2 comps z traverse with {} and {} components!"
                    .format(i, j))

                img_file = os.path.join(img_z_rand_2_traversal,
                                        'z[{},{},zero].png'.format(i, j))
                model.rand_2_latents_traverse(
                    img_file,
                    sess,
                    default_z=z_zero,
                    z_comp1=i,
                    start1=z_start,
                    stop1=z_stop,
                    num_points1=num_points,
                    z_comp2=j,
                    start2=z_start,
                    stop2=z_stop,
                    num_points2=num_points,
                    batch_size=args.batch_size,
                    dec_output_2_img_func=binary_float_to_uint8)

                img_file = os.path.join(img_z_rand_2_traversal,
                                        'z[{},{},rand].png'.format(i, j))
                model.rand_2_latents_traverse(
                    img_file,
                    sess,
                    default_z=z_rand,
                    z_comp1=i,
                    start1=z_start,
                    stop1=z_stop,
                    num_points1=num_points,
                    z_comp2=j,
                    start2=z_stop,
                    stop2=z_stop,
                    num_points2=num_points,
                    batch_size=args.batch_size,
                    dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #
    # '''

    # z conditional traversal (all features + one feature)
    # ======================================= #
    seed = 389
    num_samples = 30
    data = celebA_loader.sample_images_from_dataset(
        sess, 'train', list(range(seed, seed + num_samples)))

    z_start, z_stop = -4, 4
    num_itpl_points = 8
    for n in range(num_samples):
        print("Plot conditional all comps z traverse with test sample {}!".
              format(n))
        img_file = os.path.join(img_z_cond_all_traversal,
                                'x_train{}.png'.format(n))
        model.cond_all_latents_traverse(
            img_file,
            sess,
            data[n],
            start=z_start,
            stop=z_stop,
            num_itpl_points=num_itpl_points,
            batch_size=args.batch_size,
            dec_output_2_img_func=binary_float_to_uint8)

    z_start, z_stop = -4, 4
    num_itpl_points = 8
    for i in range(args.z_dim):
        print("Plot conditional z traverse with comp {}!".format(i))
        img_file = os.path.join(
            img_z_cond_1_traversal,
            'x_train[{},{}]_z{}.png'.format(seed, seed + num_samples, i))
        model.cond_1_latent_traverse(
            img_file,
            sess,
            data,
            z_comp=i,
            start=z_start,
            stop=z_stop,
            num_itpl_points=num_itpl_points,
            batch_size=args.batch_size,
            dec_output_2_img_func=binary_float_to_uint8)
    # ======================================= #
    # '''

    # '''
    # z correlation matrix
    # ======================================= #
    all_z = []
    for batch_ids in iterate_data(num_train, args.batch_size, shuffle=False):
        x = celebA_loader.sample_images_from_dataset(sess, 'train', batch_ids)

        z = model.encode(sess, x)
        assert len(
            z.shape) == 2 and z.shape[1] == args.z_dim, "z.shape: {}".format(
                z.shape)

        all_z.append(z)

    all_z = np.concatenate(all_z, axis=0)

    print("Start plotting!")
    plot_corrmat_with_histogram(os.path.join(img_z_corr, "corr_mat.png"),
                                all_z)
    plot_comp_dist(os.path.join(img_z_dist, 'z_{}'), all_z, x_lim=(-5, 5))
    print("Done!")
    # ======================================= #
    # '''

    # '''
    # z gaussian stddev
    # ======================================= #
    print("\nPlot z mean and stddev!")
    all_z_mean = []
    all_z_stddev = []

    for batch_ids in iterate_data(num_train, args.batch_size, shuffle=False):
        x = celebA_loader.sample_images_from_dataset(sess, 'train', batch_ids)

        z_mean, z_stddev = sess.run(model.get_output(['z_mean', 'z_stddev']),
                                    feed_dict={
                                        model.is_train: False,
                                        model.x_ph: x
                                    })

        all_z_mean.append(z_mean)
        all_z_stddev.append(z_stddev)

    all_z_mean = np.concatenate(all_z_mean, axis=0)
    all_z_stddev = np.concatenate(all_z_stddev, axis=0)

    plot_comp_dist(os.path.join(img_z_stat_dist, 'z_mean_{}.png'),
                   all_z_mean,
                   x_lim=(-5, 5))
    plot_comp_dist(os.path.join(img_z_stat_dist, 'z_stddev_{}.png'),
                   all_z_stddev,
                   x_lim=(-0.5, 3))