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import os |
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import torch.utils.data as data |
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import torch |
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import numpy as np |
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from PIL import Image |
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import pdb |
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import copy |
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from random import choice |
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from bert.tokenization_bert import BertTokenizer |
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from textblob import TextBlob |
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from refer.refer import REFER |
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from args import get_parser |
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parser = get_parser() |
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args = parser.parse_args() |
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class ReferDataset(data.Dataset): |
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def __init__(self, |
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args, |
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image_transforms=None, |
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target_transforms=None, |
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split='train', |
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eval_mode=False): |
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self.classes = [] |
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self.image_transforms = image_transforms |
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self.target_transform = target_transforms |
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self.split = split |
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self.refer = REFER(args.refer_data_root, args.dataset, args.splitBy) |
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self.dataset_type = args.dataset |
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self.max_tokens = 20 |
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ref_ids = self.refer.getRefIds(split=self.split) |
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self.img_ids = self.refer.getImgIds() |
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all_imgs = self.refer.Imgs |
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self.imgs = list(all_imgs[i] for i in self.img_ids) |
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self.ref_ids = ref_ids |
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self.input_ids = [] |
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self.input_ids_masked = [] |
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self.attention_masks = [] |
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self.tokenizer = BertTokenizer.from_pretrained(args.bert_tokenizer) |
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self.eval_mode = eval_mode |
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for r in ref_ids: |
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ref = self.refer.Refs[r] |
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sentences_for_ref = [] |
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sentences_for_ref_masked = [] |
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attentions_for_ref = [] |
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for i, (el, sent_id) in enumerate(zip(ref['sentences'], ref['sent_ids'])): |
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sentence_raw = el['raw'] |
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attention_mask = [0] * self.max_tokens |
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padded_input_ids = [0] * self.max_tokens |
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padded_input_ids_masked = [0] * self.max_tokens |
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blob = TextBlob(sentence_raw.lower()) |
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chara_list = blob.tags |
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mask_ops = [] |
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mask_ops1 = [] |
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for word_i, (word_now, chara) in enumerate(chara_list): |
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if (chara == 'NN' or chara == 'NNS') and word_i < 19 and word_now.lower(): |
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mask_ops.append(word_i) |
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mask_ops1.append(word_now) |
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mask_ops2 = self.get_adjacent_word(mask_ops) |
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input_ids = self.tokenizer.encode(text=sentence_raw, add_special_tokens=True) |
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input_ids = input_ids[:self.max_tokens] |
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padded_input_ids[:len(input_ids)] = input_ids |
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attention_mask[:len(input_ids)] = [1]*len(input_ids) |
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if len(mask_ops) == 0: |
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attention_remask = attention_mask |
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input_ids_masked = input_ids |
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else: |
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could_mask = choice(mask_ops2) |
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input_ids_masked = copy.deepcopy(input_ids) |
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for i in could_mask: |
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input_ids_masked[i + 1] = 0 |
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padded_input_ids_masked[:len(input_ids_masked)] = input_ids_masked |
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sentences_for_ref.append(torch.tensor(padded_input_ids).unsqueeze(0)) |
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sentences_for_ref_masked.append(torch.tensor(padded_input_ids_masked).unsqueeze(0)) |
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attentions_for_ref.append(torch.tensor(attention_mask).unsqueeze(0)) |
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self.input_ids.append(sentences_for_ref) |
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self.input_ids_masked.append(sentences_for_ref_masked) |
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self.attention_masks.append(attentions_for_ref) |
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def get_classes(self): |
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return self.classes |
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def __len__(self): |
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return len(self.ref_ids) |
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def get_adjacent_word(self, mask_list): |
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output_mask_list = [] |
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length = len(mask_list) |
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i = 0 |
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while i < length: |
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begin_pos = i |
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while i+1 < length and mask_list[i+1] == mask_list[i] + 1: |
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i += 1 |
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end_pos = i+1 |
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output_mask_list.append(mask_list[begin_pos:end_pos]) |
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i = end_pos |
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return output_mask_list |
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def __getitem__(self, index): |
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this_ref_id = self.ref_ids[index] |
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this_img_id = self.refer.getImgIds(this_ref_id) |
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this_img = self.refer.Imgs[this_img_id[0]] |
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img = Image.open(os.path.join(self.refer.IMAGE_DIR, this_img['file_name'])).convert("RGB") |
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ref = self.refer.loadRefs(this_ref_id) |
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if self.dataset_type == 'ref_zom': |
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source_type = ref[0]['source'] |
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else: |
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source_type = 'one' |
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ref_mask = np.array(self.refer.getMask(ref[0])['mask']) |
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annot = np.zeros(ref_mask.shape) |
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annot[ref_mask == 1] = 1 |
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annot = Image.fromarray(annot.astype(np.uint8), mode="P") |
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if self.image_transforms is not None: |
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if self.split == 'train': |
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img, target = self.image_transforms(img, annot) |
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elif self.split == 'val': |
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img, target = self.image_transforms(img, annot) |
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else: |
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img, target = self.image_transforms(img, annot) |
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if self.eval_mode: |
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embedding = [] |
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embedding_masked = [] |
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att = [] |
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for s in range(len(self.input_ids[index])): |
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e = self.input_ids[index][s] |
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a = self.attention_masks[index][s] |
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embedding.append(e.unsqueeze(-1)) |
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embedding_masked.append(e.unsqueeze(-1)) |
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att.append(a.unsqueeze(-1)) |
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tensor_embeddings = torch.cat(embedding, dim=-1) |
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tensor_embeddings_masked = torch.cat(embedding_masked, dim=-1) |
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attention_mask = torch.cat(att, dim=-1) |
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else: |
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choice_sent = np.random.choice(len(self.input_ids[index])) |
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tensor_embeddings = self.input_ids[index][choice_sent] |
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tensor_embeddings_masked = self.input_ids_masked[index][choice_sent] |
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attention_mask = self.attention_masks[index][choice_sent] |
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return img, target, source_type, tensor_embeddings, tensor_embeddings_masked, attention_mask |
