def fetch_ann_spa_feat(self, ann_id, min_size=600, max_size=1000):
# return x1, y1, x2, y2, area
image_id = self.ann_to_image[ann_id]
W, H = self.images[image_id]['width'], self.images[image_id]['height']
x1, y1, w, h = self.ann_to_box[ann_id]
x2 = max(x1 + 1, x1 + w - 1)
y2 = max(y1 + 1, y1 + h - 1)
area = w * h
# scale
scale = min(max(min_size / H, min_size / W), max_size / H,
max_size / W)
new_h, new_w = int(scale * H), int(scale * W)
region_bboxes = np.array([[x1, y1, x2, y2]], np.float32) * scale
region_bboxes = im_processing.rectify_bboxes(region_bboxes,
height=new_h,
width=new_w)
bbox_batch = np.zeros((len(region_bboxes), 5), np.float32)
bbox_batch[:, 1:5] = region_bboxes
spatial_batch = spatial_feature_from_bbox(region_bboxes,
im_h=new_h,
im_w=new_w)
return spatial_batch[0]
def img_box_modify(self, im, box, min_size=600, max_size=1000):
# box[x1, y1, w, h] -> [batch_index(0), x1, y1, x2, y2]
# For each ROI R = [batch_index x1 y1 x2 y2]: max pool over R
bbox_batch = np.zeros((len(box), 5), np.float32)
bbox_batch[:, 1:5] = box
bbox_batch[:,
3:5] = bbox_batch[:,
3:5] + bbox_batch[:,
1:3] - 1 # x2 = x1+w-1
# calculate the resize scaling factor
im_h, im_w = im.shape[:2]
# make the short size equal to min_size but also the long size no bigger than max_size
scale = min(max(min_size / im_h, min_size / im_w), max_size / im_h,
max_size / im_w)
# resize and process the image
new_h, new_w = int(scale * im_h), int(scale * im_w)
im_resized = skimage.img_as_float(
skimage.transform.resize(im, [new_h, new_w]))
im_processed = im_resized * 255 - im_mean
im_batch = im_processed[np.newaxis, ...].astype(np.float32)
# resize and process the box
bbox_batch[:, 1:] = im_processing.rectify_bboxes(bbox_batch[:, 1:] *
scale,
height=new_h,
width=new_w)
return im_batch, bbox_batch
def load_one_batch(iminfo, im_mean, min_size, max_size, vocab_dict, T):
im_path = iminfo['im_path']
im = skimage.io.imread(im_path)
if im.ndim == 2:
im = np.tile(im[..., np.newaxis], (1, 1, 3))
# calculate the resize scaling factor
im_h, im_w = im.shape[:2]
# make the short size equal to min_size but also the long size no bigger than max_size
scale = min(max(min_size/im_h, min_size/im_w), max_size/im_h, max_size/im_w)
# resize and process the image
new_h, new_w = int(scale*im_h), int(scale*im_w)
im_resized = skimage.img_as_float(skimage.transform.resize(im, [new_h, new_w]))
im_processed = im_resized*255 - im_mean
im_batch = im_processed[np.newaxis, ...].astype(np.float32)
# annotate regions
regions = iminfo['regions']
if len(regions) == 0:
raise IOError('no region annotations for image ' + im_path)
region_bboxes = np.array([ann[0] for ann in regions], np.float32)
# save coco_bboxes, needed for evaluation code
coco_bboxes = region_bboxes.copy()
# back to [x, y, w, h]
coco_bboxes[:, 2:4] = coco_bboxes[:, 2:4] - coco_bboxes[:, 0:2] + 1
region_bboxes *= scale
region_bboxes = im_processing.rectify_bboxes(region_bboxes, height=new_h, width=new_w)
# For each ROI R = [batch_index x1 y1 x2 y2]: max pool over R
bbox_batch = np.zeros((len(region_bboxes), 5), np.float32)
bbox_batch[:, 1:5] = region_bboxes
spatial_batch = spatial_feature_from_bbox(region_bboxes, im_h=new_h, im_w=new_w)
# a region may have zero, one or more sentence annotations
# align language sequences with regions
text_seq_batch = []
label_batch = []
coco_ann_ids = [] # needed for evaluation code
questions = [] # needed for evaluation code
for n in range(len(regions)):
for n_s in range(len(regions[n][1])):
s = regions[n][1][n_s]
text_seq_batch.append(text_processing.preprocess_sentence(s, vocab_dict, T))
label_batch.append(n)
coco_ann_ids.append(regions[n][2])
questions.append(s)
text_seq_batch = np.array(text_seq_batch, dtype=np.int32).T
label_batch = np.array(label_batch, dtype=np.int32)
batch=dict(text_seq_batch=text_seq_batch, im_batch=im_batch,
bbox_batch=bbox_batch, spatial_batch=spatial_batch,
label_batch=label_batch, coco_ann_ids=coco_ann_ids,
questions=questions, coco_bboxes=coco_bboxes)
return batch
def load_one_batch(iminfo, im_mean, min_size, max_size, vocab_dict, T):
im_path = iminfo['im_path']
im = skimage.io.imread(im_path)
if im.ndim == 2:
im = np.tile(im[..., np.newaxis], (1, 1, 3))
# calculate the resize scaling factor
im_h, im_w = im.shape[:2]
# make the short size equal to min_size but also the long size no bigger than max_size
scale = min(max(min_size / im_h, min_size / im_w), max_size / im_h,
max_size / im_w)
# resize and process the image
new_h, new_w = int(scale * im_h), int(scale * im_w)
im_resized = skimage.img_as_float(
skimage.transform.resize(im, [new_h, new_w]))
im_processed = im_resized * 255 - im_mean
im_batch = im_processed[np.newaxis, ...].astype(np.float32)
# Sample one qa pair from all QA pairs
qa_pairs = iminfo['processed_qa_pairs']
num_questions = len(qa_pairs)
num_choices = 4
text_seq_batch = np.zeros((T, num_questions * num_choices), dtype=np.int32)
label_batch = np.zeros(num_questions, dtype=np.int32)
bboxes = np.zeros((num_questions * num_choices, 4), np.float32)
for n_q in range(num_questions):
this_bboxes, question, label = qa_pairs[n_q]
bboxes[n_q * num_choices:(n_q + 1) * num_choices, :] = this_bboxes
text_seq_batch[:, n_q*num_choices:(n_q+1)*num_choices] = \
np.array(text_processing.preprocess_sentence(question, vocab_dict, T)).reshape((T, 1))
label_batch[n_q] = label
# annotate regions
bboxes *= scale
bboxes = im_processing.rectify_bboxes(bboxes, height=new_h, width=new_w)
spatial_batch = spatial_feature_from_bbox(bboxes, im_h=new_h, im_w=new_w)
# For each ROI R = [batch_index x1 y1 x2 y2]: max pool over R
bbox_batch = np.zeros((len(bboxes), 5), np.float32)
bbox_batch[:, 1:5] = bboxes
batch = dict(im_batch=im_batch,
bbox_batch=bbox_batch,
spatial_batch=spatial_batch,
text_seq_batch=text_seq_batch,
label_batch=label_batch)
return batch
def load_one_batch(iminfo, im_mean, min_size, max_size, vocab_dict, T,
max_bbox_num, max_rel_num):
im_path = iminfo['im_path']
im = skimage.io.imread(im_path)
if im.ndim == 2:
im = np.tile(im[..., np.newaxis], (1, 1, 3))
# calculate the resize scaling factor
im_h, im_w = im.shape[:2]
# make the short size equal to min_size but also the long size no bigger than max_size
scale = min(max(min_size / im_h, min_size / im_w), max_size / im_h,
max_size / im_w)
# resize and process the image
new_h, new_w = int(scale * im_h), int(scale * im_w)
im_resized = skimage.img_as_float(
skimage.transform.resize(im, [new_h, new_w]))
im_processed = im_resized * 255 - im_mean
im_batch = im_processed[np.newaxis, ...].astype(np.float32)
# annotate regions
bboxes = np.array(iminfo['bboxes'], np.float32)
bboxes = bboxes[:max_bbox_num]
if len(bboxes) == 0:
raise IOError('no object annotations for image ' + im_path)
bboxes *= scale
bboxes = im_processing.rectify_bboxes(bboxes, height=new_h, width=new_w)
spatial_batch = spatial_feature_from_bbox(bboxes, im_h=new_h, im_w=new_w)
# For each ROI R = [batch_index x1 y1 x2 y2]: max pool over R
bbox_batch = np.zeros((len(bboxes), 5), np.float32)
bbox_batch[:, 1:5] = bboxes
# Randomly pick one relationship from all the relationships in this image
mapped_rels = iminfo['mapped_rels']
if len(mapped_rels) == 0:
raise IOError('no relationship annotations for image ' + im_path)
# Prune the relationships to avoid objects out of max_bbox_num
if len(iminfo['bboxes']) > max_bbox_num:
mapped_rels = [
rel for rel in mapped_rels if max(rel[0], rel[1]) < max_bbox_num
]
if len(mapped_rels) > max_rel_num:
mapped_rels = [
mapped_rels[n]
for n in np.random.choice(len(mapped_rels), max_rel_num)
]
num_rels = len(mapped_rels)
if num_rels == 0:
raise IOError('no relationship annotations for image ' + im_path)
expr_obj1_batch = np.zeros((T, num_rels), dtype=np.int32)
expr_obj2_batch = np.zeros((T, num_rels), dtype=np.int32)
expr_relation_batch = np.zeros((T, num_rels), dtype=np.int32)
text_seq_batch = np.zeros((T, num_rels), dtype=np.int32)
label_batch = np.zeros(num_rels, dtype=np.int32)
label_weak_batch = np.zeros(num_rels, dtype=np.int32)
label_weak_obj2_batch = np.zeros(num_rels, dtype=np.int32)
questions = [None for _ in range(num_rels)]
obj1_component_idx = np.zeros((T, num_rels), np.bool)
obj2_component_idx = np.zeros((T, num_rels), np.bool)
rel_component_idx = np.zeros((T, num_rels), np.bool)
for n_rel in range(num_rels):
obj1_idx, obj2_idx, obj1_name, predcate_name, obj2_name = mapped_rels[
n_rel]
question = obj1_name + ' ' + predcate_name + ' ' + obj2_name
vocabidx_obj1 = text_processing.sentence2vocab_indices(
obj1_name, vocab_dict)
vocabidx_obj2 = text_processing.sentence2vocab_indices(
obj2_name, vocab_dict)
vocabidx_predcate = text_processing.sentence2vocab_indices(
predcate_name, vocab_dict)
expr_obj1_batch[:, n_rel] = text_processing.preprocess_vocab_indices(
vocabidx_obj1, vocab_dict, T)
expr_obj2_batch[:, n_rel] = text_processing.preprocess_vocab_indices(
vocabidx_obj2, vocab_dict, T)
expr_relation_batch[:,
n_rel] = text_processing.preprocess_vocab_indices(
vocabidx_predcate, vocab_dict, T)
text_seq_batch[:, n_rel] = text_processing.preprocess_vocab_indices(
vocabidx_obj1 + vocabidx_predcate + vocabidx_obj2, vocab_dict, T)
l_obj1, l_obj2, l_rel = len(vocabidx_obj1), len(vocabidx_obj2), len(
vocabidx_predcate)
obj1_component_idx[-l_obj1 - l_rel - l_obj2:-l_rel - l_obj2,
n_rel] = True
rel_component_idx[-l_rel - l_obj2:-l_obj2, n_rel] = True
obj2_component_idx[-l_obj2:, n_rel] = True
label_batch[n_rel] = obj1_idx * bbox_batch.shape[0] + obj2_idx
label_weak_batch[n_rel] = obj1_idx
label_weak_obj2_batch[n_rel] = obj2_idx
questions[n_rel] = question
batch = dict(im_batch=im_batch,
bbox_batch=bbox_batch,
spatial_batch=spatial_batch,
expr_obj1_batch=expr_obj1_batch,
expr_obj2_batch=expr_obj2_batch,
expr_relation_batch=expr_relation_batch,
text_seq_batch=text_seq_batch,
label_weak_batch=label_weak_batch,
label_weak_obj2_batch=label_weak_obj2_batch,
label_batch=label_batch,
questions=questions,
obj1_component_idx=obj1_component_idx,
obj2_component_idx=obj2_component_idx,
rel_component_idx=rel_component_idx)
return batch
