init commit of samurai

lib/train/dataset/tracking_net_lmdb.py

@@ -0,0 +1,147 @@
+import torch
+import os
+import os.path
+import numpy as np
+import random
+from collections import OrderedDict
+
+from lib.train.data import jpeg4py_loader
+from .base_video_dataset import BaseVideoDataset
+from lib.train.admin import env_settings
+import json
+from lib.utils.lmdb_utils import decode_img, decode_str
+
+
+def list_sequences(root):
+    """ Lists all the videos in the input set_ids. Returns a list of tuples (set_id, video_name)
+
+    args:
+        root: Root directory to TrackingNet
+
+    returns:
+        list - list of tuples (set_id, video_name) containing the set_id and video_name for each sequence
+    """
+    fname = os.path.join(root, "seq_list.json")
+    with open(fname, "r") as f:
+        sequence_list = json.loads(f.read())
+    return sequence_list
+
+
+class TrackingNet_lmdb(BaseVideoDataset):
+    """ TrackingNet dataset.
+
+    Publication:
+        TrackingNet: A Large-Scale Dataset and Benchmark for Object Tracking in the Wild.
+        Matthias Mueller,Adel Bibi, Silvio Giancola, Salman Al-Subaihi and Bernard Ghanem
+        ECCV, 2018
+        https://ivul.kaust.edu.sa/Documents/Publications/2018/TrackingNet%20A%20Large%20Scale%20Dataset%20and%20Benchmark%20for%20Object%20Tracking%20in%20the%20Wild.pdf
+
+    Download the dataset using the toolkit https://github.com/SilvioGiancola/TrackingNet-devkit.
+    """
+    def __init__(self, root=None, image_loader=jpeg4py_loader, set_ids=None, data_fraction=None):
+        """
+        args:
+            root        - The path to the TrackingNet folder, containing the training sets.
+            image_loader (jpeg4py_loader) -  The function to read the images. jpeg4py (https://github.com/ajkxyz/jpeg4py)
+                                            is used by default.
+            set_ids (None) - List containing the ids of the TrackingNet sets to be used for training. If None, all the
+                            sets (0 - 11) will be used.
+            data_fraction - Fraction of dataset to be used. The complete dataset is used by default
+        """
+        root = env_settings().trackingnet_lmdb_dir if root is None else root
+        super().__init__('TrackingNet_lmdb', root, image_loader)
+
+        if set_ids is None:
+            set_ids = [i for i in range(12)]
+
+        self.set_ids = set_ids
+
+        # Keep a list of all videos. Sequence list is a list of tuples (set_id, video_name) containing the set_id and
+        # video_name for each sequence
+        self.sequence_list = list_sequences(self.root)
+
+        if data_fraction is not None:
+            self.sequence_list = random.sample(self.sequence_list, int(len(self.sequence_list) * data_fraction))
+
+        self.seq_to_class_map, self.seq_per_class = self._load_class_info()
+
+        # we do not have the class_lists for the tracking net
+        self.class_list = list(self.seq_per_class.keys())
+        self.class_list.sort()
+
+    def _load_class_info(self):
+        ltr_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..')
+        class_map_path = os.path.join(ltr_path, 'data_specs', 'trackingnet_classmap.txt')
+
+        with open(class_map_path, 'r') as f:
+            seq_to_class_map = {seq_class.split('\t')[0]: seq_class.rstrip().split('\t')[1] for seq_class in f}
+
+        seq_per_class = {}
+        for i, seq in enumerate(self.sequence_list):
+            class_name = seq_to_class_map.get(seq[1], 'Unknown')
+            if class_name not in seq_per_class:
+                seq_per_class[class_name] = [i]
+            else:
+                seq_per_class[class_name].append(i)
+
+        return seq_to_class_map, seq_per_class
+
+    def get_name(self):
+        return 'trackingnet_lmdb'
+
+    def has_class_info(self):
+        return True
+
+    def get_sequences_in_class(self, class_name):
+        return self.seq_per_class[class_name]
+
+    def _read_bb_anno(self, seq_id):
+        set_id = self.sequence_list[seq_id][0]
+        vid_name = self.sequence_list[seq_id][1]
+        gt_str_list = decode_str(os.path.join(self.root, "TRAIN_%d_lmdb" % set_id),
+                                 os.path.join("anno", vid_name + ".txt")).split('\n')[:-1]
+        gt_list = [list(map(float, line.split(','))) for line in gt_str_list]
+        gt_arr = np.array(gt_list).astype(np.float32)
+        return torch.tensor(gt_arr)
+
+    def get_sequence_info(self, seq_id):
+        bbox = self._read_bb_anno(seq_id)
+
+        valid = (bbox[:, 2] > 0) & (bbox[:, 3] > 0)
+        visible = valid.clone().byte()
+        return {'bbox': bbox, 'valid': valid, 'visible': visible}
+
+    def _get_frame(self, seq_id, frame_id):
+        set_id = self.sequence_list[seq_id][0]
+        vid_name = self.sequence_list[seq_id][1]
+        return decode_img(os.path.join(self.root, "TRAIN_%d_lmdb" % set_id),
+                          os.path.join("frames", vid_name, str(frame_id) + ".jpg"))
+
+    def _get_class(self, seq_id):
+        seq_name = self.sequence_list[seq_id][1]
+        return self.seq_to_class_map[seq_name]
+
+    def get_class_name(self, seq_id):
+        obj_class = self._get_class(seq_id)
+
+        return obj_class
+
+    def get_frames(self, seq_id, frame_ids, anno=None):
+        frame_list = [self._get_frame(seq_id, f) for f in frame_ids]
+
+        if anno is None:
+            anno = self.get_sequence_info(seq_id)
+
+        anno_frames = {}
+        for key, value in anno.items():
+            anno_frames[key] = [value[f_id, ...].clone() for f_id in frame_ids]
+
+        obj_class = self._get_class(seq_id)
+
+        object_meta = OrderedDict({'object_class_name': obj_class,
+                                   'motion_class': None,
+                                   'major_class': None,
+                                   'root_class': None,
+                                   'motion_adverb': None})
+
+        return frame_list, anno_frames, object_meta