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deletion_batch_MP_recuperacion.py
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deletion_batch_MP_recuperacion.py
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import argparse
import os
import random
import shutil
import time
import sys
import warnings
from srblib import abs_path
from PIL import ImageFilter, Image
import torch
import torch.nn as nn
import torch.nn.parallel
import torch.backends.cudnn as cudnn
import torch.optim
import torch.utils.data
import torch.utils.data.distributed
import torchvision.transforms as transforms
import torchvision.datasets as datasets
import torchvision.models as models
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.colors import ListedColormap
from tqdm import tqdm, trange
import skimage
from skimage.transform import resize
# Fixing for deterministic results
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
# bibliotecas inpainter
sys.path.insert(0, './generativeimptorch')
from utils.tools import get_config, get_model_list
from model.networks import Generator
imagenet_val_xml_path = './val_bb'
imagenet_val_path = './val/'
base_img_dir = abs_path(imagenet_val_path)
input_dir_path = 'images_list.txt'
text_file = abs_path(input_dir_path)
imagenet_class_mappings = './imagenet_class_mappings'
torch.manual_seed(0)
learning_rate = 0.1
size = 224
max_iterations = 300
jitter = 4
l1_coeff = 1e-4
tv_beta = 3
tv_coeff = 1e-2
thresh = 0.5
upsample = torch.nn.UpsamplingNearest2d(size=(size, size)).to('cuda')
def tv_norm(input, tv_beta):
img = input[:, 0, :]
row_grad = torch.abs((img[:, :-1, :] - img[:, 1:, :])).pow(tv_beta).sum(dim=(1, 2))
col_grad = torch.abs((img[:, :, :-1] - img[:, :, 1:])).pow(tv_beta).sum(dim=(1, 2))
return row_grad + col_grad
torch.cuda.set_device(1) # especificar cual gpu 0 o 1
model = models.googlenet(pretrained=True)
# model = models.resnet50(pretrained=True)
# model = models.vgg16(pretrained=True)
# model = models.alexnet(pretrained=True)
model.cuda()
model.eval()
for param in model.parameters():
param.requires_grad = False
print('GPU 0 Metod. Recuperacion MP')
def imagenet_label_mappings():
fileName = os.path.join(imagenet_class_mappings, 'imagenet_label_mapping')
with open(fileName, 'r') as f:
image_label_mapping = {int(x.split(":")[0]): x.split(":")[1].strip()
for x in f.readlines() if len(x.strip()) > 0}
return image_label_mapping
im_label_map = imagenet_label_mappings()
transform_val = transforms.Compose([
transforms.Resize((256, 256)),
transforms.CenterCrop(224 + jitter),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225]),
])
# Creating colormap
uP = cm.get_cmap('Blues_r', 129)
dowN = cm.get_cmap('Blues_r', 128)
newcolors = np.vstack((
dowN(np.linspace(0, 1, 128)),
uP(np.linspace(0, 1, 129))
))
cMap = ListedColormap(newcolors, name='RedsBlues')
cMap.colors[257 // 2, :] = [1, 1, 1, 1]
def my_explanation(img_batch, max_iterations, gt_category, file_names):
np.random.seed(seed=0)
mask = torch.from_numpy(np.random.uniform(0, 0.01, size=(1, 1, 28, 28)))
mask = mask.expand(img_batch.size(0), 1, 28, 28)
mask = mask.cuda()
mask.requires_grad = True
null_img_blur = transforms.GaussianBlur(kernel_size=223, sigma=10)(img_batch)
null_img = null_img_blur.cuda()
optimizer = torch.optim.Adam([mask], lr=learning_rate)
for i in trange(max_iterations):
if jitter != 0:
j1 = np.random.randint(jitter)
j2 = np.random.randint(jitter)
else:
j1 = 0
j2 = 0
upsampled_mask = upsample(mask)
extended_mask = upsampled_mask.expand(img_batch.size(0), 3, 224, 224)
perturbated_input = img_batch[:, :, j1:(size + j1), j2:(size + j2)].mul(extended_mask) + \
null_img[:, :, j1:(size + j1), j2:(size + j2)].mul(1 - extended_mask)
perturbated_input = perturbated_input.to(torch.float32)
optimizer.zero_grad()
outputs = torch.nn.Softmax(dim=1)(model(perturbated_input)) # (3,1000)
preds = outputs[torch.arange(0, img_batch.size(0)).tolist(), gt_category.tolist()]
loss = l1_coeff * torch.sum(torch.abs(1 - mask), dim=(1, 2, 3)) + preds + tv_coeff * tv_norm(mask, tv_beta)
loss.backward(gradient=torch.ones_like(loss).cuda())
# mask.grad.data = torch.nn.functional.normalize(mask.grad.data, p=float('inf'), dim=(2, 3))
optimizer.step()
mask.data.clamp_(0, 1)
mask_np = (mask.cpu().detach().numpy())
for i in range(mask_np.shape[0]):
fig = plt.figure()
fig.subplots_adjust(left=0.03, bottom=0, right=0.97, top=1, wspace=0.1, hspace=0.1)
fig.set_size_inches(12, 5)
ax = fig.add_subplot(1, 3, 1)
inp = img_batch[i].cpu().numpy().transpose((1, 2, 0))
mean = np.array([0.485, 0.456, 0.406])
std = np.array([0.229, 0.224, 0.225])
inp = std * inp + mean
inp = np.clip(inp, 0, 1)
ax.imshow(inp)
# title = file_names[i].split('/')[-1].split('.JPEG')[0]
# ax.set_title(title)
ax.set_xticks([])
ax.set_yticks([])
ax = fig.add_subplot(1, 3, 2)
mask_rz = 1. - resize(mask_np[i, 0, :, :], (228, 228))
ax.imshow(mask_rz)
ax.set_xticks([])
ax.set_yticks([])
ax = fig.add_subplot(1, 3, 3)
img_masked = np.multiply(inp, np.repeat(np.expand_dims(mask_rz, axis=2), 3, axis=2))
ax.imshow(img_masked)
ax.set_xticks([])
ax.set_yticks([])
# fig.tight_layout()
plt.show()
return mask
init_time = time.time()
########## Se carga el batch de imágenes adversarias ############
imgs_adv = np.load('adv_im_MP.npy')
adv_batch = torch.from_numpy(imgs_adv)
adv_batch = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])(adv_batch)
# preds_adv = torch.nn.Softmax(dim=1)(model(adv_batch)) # tensor(200,1000)
# probs_adv, labels_adv = torch.max(preds_adv, 1) # Top 1 predicciones adversarias (200, 1)
##################################################################
# orig_labels = np.load('adv_orig_labels.npy') # (200,)
img_name_list = []
with open(text_file, 'r') as f:
for line in f:
img_name_list.append(line.split('\n')[0])
class DataProcessing:
def __init__(self, data_path, transform, img_idxs=[0, 1], if_noise=0, noise_var=0.0):
self.data_path = data_path
self.transform = transform
self.if_noise = if_noise
self.noise_mean = 0
self.noise_var = noise_var
self.img_idxs = img_idxs
img_list = img_name_list[img_idxs[0]:img_idxs[1]]
self.img_filenames = [os.path.join(data_path, f'{i}.JPEG') for i in img_list]
# self.img_filenames.sort()
def __getitem__(self, index):
img = Image.open(os.path.join(self.data_path, self.img_filenames[index])).convert('RGB')
target = self.get_image_class(os.path.join(self.data_path, self.img_filenames[index]))
img_adv = adv_batch[index + self.img_idxs[0]]
if self.if_noise == 1:
img = skimage.util.random_noise(np.asarray(img), mode='gaussian',
mean=self.noise_mean, var=self.noise_var,
) # numpy, dtype=float64,range (0, 1)
img = Image.fromarray(np.uint8(img * 255))
img = self.transform(img)
return img, img_adv, target, os.path.join(self.data_path, self.img_filenames[index])
# return img, target
def __len__(self):
return len(self.img_filenames)
def get_image_class(self, filepath):
# ImageNet 2012 validation set images?
with open(os.path.join(imagenet_class_mappings, "ground_truth_val2012")) as f:
ground_truth_val2012 = {x.split()[0]: int(x.split()[1])
for x in f.readlines() if len(x.strip()) > 0}
def get_class(f):
ret = ground_truth_val2012.get(f, None)
return ret
image_class = get_class(filepath.split('/')[-1])
return image_class
transform_val = transforms.Compose([
transforms.Resize((256, 256)),
transforms.CenterCrop(224),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225]),
])
val_dataset = DataProcessing(base_img_dir, transform_val, img_idxs=[0, 200], if_noise=0, noise_var=0.0)
val_loader = torch.utils.data.DataLoader(val_dataset, batch_size=50, shuffle=False, num_workers=10,
pin_memory=True)
iterator = tqdm(enumerate(val_loader), total=len(val_loader), desc='batch')
recov_top_cnt_full = []
pertb_top_cnt_full = []
pertb_radio = []
recov_radio = []
for i, (images, imgs_adv, target, file_names) in iterator:
imgs_adv.requires_grad = False
images_orig = images.cuda()
imgs_adv = imgs_adv.cuda()
# predicciones originales para comparar
preds_orig = torch.nn.Softmax(dim=1)(model(images_orig))
probs_orig, labels_orig = torch.topk(preds_orig, 10) # Top 10 predicciones originales
preds_adv = torch.nn.Softmax(dim=1)(model(imgs_adv)) # tensor(n_batch,1000)
probs_adv, labels_adv = torch.topk(preds_adv, 1000) # Top 1 predicciones adversarias
_, labels_adv_top = torch.max(preds_adv, 1)
# obtención de explicaciones para imágenes adversarias
_, orig_labels = torch.max(preds_orig, 1) # labels originales para generar las explicaciones
mask = my_explanation(imgs_adv, max_iterations, orig_labels, file_names)
mask = transforms.Resize((228, 228))(mask)
# reenmascaramiento de img adv con explicación
adv_masked = imgs_adv.mul(1. - mask)
adv_masked = adv_masked.to(torch.float32)
# prediccion reenmascaramiento
preds_masked = torch.nn.Softmax(dim=1)(model(adv_masked)) # tensor(n_batch,1000)
probs_masked, labels_masked = torch.topk(preds_masked, 1000) # predicciones recuperadas y ordenadas (n_batch, 1000)
for i in range(val_loader.batch_size): # se itera en el tamaño del batch
prob_orig = probs_orig.cpu().detach()[i] # (10, ) topk = 10
label_orig = labels_orig.cpu().detach()[i] # (10, ) topk = 10
prob_masked = probs_masked.cpu().detach()[i] # (1000,)
label_masked = labels_masked.cpu().detach()[i] # (1000,)
label_adv = labels_adv.cpu().detach()[i]
prob_adv = probs_adv.cpu().detach()[i]
# se buscan donde estan las etiquetas originales dentro de las perturbadas
pertub_pos_list = [torch.where(label_adv == label_orig_item)[0].item() for label_orig_item in label_orig]
pertub_pos_list_tensor = torch.tensor(pertub_pos_list)
pertb_radio.append(pertub_pos_list_tensor)
pertb_top_cnt = [torch.where(pertub_pos_list_tensor <= i)[0].nelement() >= 1 for i in range(10)]
pertb_top_cnt_full.append(torch.tensor(pertb_top_cnt))
# se buscan donde estan las etiquetas originales dentro de las recuperadas
recov_pos_list = [torch.where(label_masked == label_orig_item)[0].item() for label_orig_item in label_orig]
recov_pos_list_tensor = torch.tensor(recov_pos_list)
recov_radio.append(recov_pos_list_tensor)
# el indice de pos_list_tensor determina el rango de predicciones a incluir en el top 10
# por ejemplo pos_list_tensor[0] analiza el top 10 de la primera prediccion original en el grupo de recuperados
# pos_list_tensor[0:4] analiza el top 10 del grupo de las 3 primeras predicciones originales en el grupo recup
recov_top_cnt = [torch.where(recov_pos_list_tensor <= i)[0].nelement() >= 1 for i in range(10)]
recov_top_cnt_full.append(torch.tensor(recov_top_cnt))
print('muestra ', file_names[i].split('/')[-1].split('.JPEG')[0])
print('top 10 muestra original: ', label_orig.tolist())
print('top 10 muestra original (decod): ', [im_label_map.get(label) for label in label_orig.tolist()])
print('top 10 prob muestra original (%): ', [round(num * 100, 2) for num in prob_orig.tolist()])
print('lista top 10 recuperados acum ', recov_top_cnt)
print('top 10 perturbados ', label_adv[0:10].tolist())
print('top 10 perturbados (decod) ', [im_label_map.get(label) for label in label_adv[0:10].tolist()])
print('top 10 prob muestra pertb (%)', [round(num * 100, 2) for num in prob_adv[0:10].tolist()])
print('pos orig en perturbado ', pertub_pos_list)
print('top 10 recuperados ', label_masked[0:10].tolist())
print('top 10 recuperados (decod) ', [im_label_map.get(label) for label in label_masked[0:10].tolist()])
print('top 10 prob muestra recup (%)', [round(num * 100, 2) for num in prob_masked[0:10].tolist()])
print('pos orig en recuperado ', recov_pos_list)
print('')
recov_table = torch.stack(recov_top_cnt_full)
recov_stats = recov_table.sum(0) / (val_loader.batch_size * len(val_loader))
pertb_table = torch.stack(pertb_top_cnt_full)
pertb_stats = pertb_table.sum(0) / (val_loader.batch_size * len(val_loader))
print('estado despues de perturbar')
print(pertb_stats)
print('')
print('estado despues de recuperar')
print(recov_stats)
print('')
pr = torch.stack(pertb_radio).float()
print('radio perturbacion')
print(pr)
print('promedio')
print(pr.mean(0))
print('')
rr = torch.stack(recov_radio).float()
print('radio recuperacion')
print(rr)
print('promedio')
print(rr.mean(0))
print('')
print('Time taken: {:.3f}'.format(time.time() - init_time))