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<h1>Source code for torchreid.data.datasets.video.dukemtmcvidreid</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">print_function</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">division</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">os.path</span> <span class="k">as</span> <span class="nn">osp</span>
<span class="kn">import</span> <span class="nn">glob</span>
<span class="kn">import</span> <span class="nn">warnings</span>
<span class="kn">from</span> <span class="nn">torchreid.data.datasets</span> <span class="k">import</span> <span class="n">VideoDataset</span>
<span class="kn">from</span> <span class="nn">torchreid.utils</span> <span class="k">import</span> <span class="n">read_json</span><span class="p">,</span> <span class="n">write_json</span>
<div class="viewcode-block" id="DukeMTMCVidReID"><a class="viewcode-back" href="../../../../../pkg/data.html#torchreid.data.datasets.video.dukemtmcvidreid.DukeMTMCVidReID">[docs]</a><span class="k">class</span> <span class="nc">DukeMTMCVidReID</span><span class="p">(</span><span class="n">VideoDataset</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;DukeMTMCVidReID.</span>
<span class="sd"> Reference:</span>
<span class="sd"> - Ristani et al. Performance Measures and a Data Set for Multi-Target,</span>
<span class="sd"> Multi-Camera Tracking. ECCVW 2016.</span>
<span class="sd"> - Wu et al. Exploit the Unknown Gradually: One-Shot Video-Based Person</span>
<span class="sd"> Re-Identification by Stepwise Learning. CVPR 2018.</span>
<span class="sd"> URL: `&lt;https://github.com/Yu-Wu/DukeMTMC-VideoReID&gt;`_</span>
<span class="sd"> </span>
<span class="sd"> Dataset statistics:</span>
<span class="sd"> - identities: 702 (train) + 702 (test).</span>
<span class="sd"> - tracklets: 2196 (train) + 2636 (test).</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">dataset_dir</span> <span class="o">=</span> <span class="s1">&#39;dukemtmc-vidreid&#39;</span>
<span class="n">dataset_url</span> <span class="o">=</span> <span class="s1">&#39;http://vision.cs.duke.edu/DukeMTMC/data/misc/DukeMTMC-VideoReID.zip&#39;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="n">min_seq_len</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">root</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">abspath</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">expanduser</span><span class="p">(</span><span class="n">root</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">root</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">download_dataset</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataset_url</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">train_dir</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;DukeMTMC-VideoReID/train&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">query_dir</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;DukeMTMC-VideoReID/query&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">gallery_dir</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;DukeMTMC-VideoReID/gallery&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">split_train_json_path</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;split_train.json&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">split_query_json_path</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;split_query.json&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">split_gallery_json_path</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span> <span class="s1">&#39;split_gallery.json&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">min_seq_len</span> <span class="o">=</span> <span class="n">min_seq_len</span>
<span class="n">required_files</span> <span class="o">=</span> <span class="p">[</span>
<span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">train_dir</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">query_dir</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">gallery_dir</span>
<span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">check_before_run</span><span class="p">(</span><span class="n">required_files</span><span class="p">)</span>
<span class="n">train</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_dir</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">train_dir</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">split_train_json_path</span><span class="p">,</span> <span class="n">relabel</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">query</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_dir</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">query_dir</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">split_query_json_path</span><span class="p">,</span> <span class="n">relabel</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="n">gallery</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_dir</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">gallery_dir</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">split_gallery_json_path</span><span class="p">,</span> <span class="n">relabel</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="nb">super</span><span class="p">(</span><span class="n">DukeMTMCVidReID</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">train</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">gallery</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">process_dir</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dir_path</span><span class="p">,</span> <span class="n">json_path</span><span class="p">,</span> <span class="n">relabel</span><span class="p">):</span>
<span class="k">if</span> <span class="n">osp</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">json_path</span><span class="p">):</span>
<span class="n">split</span> <span class="o">=</span> <span class="n">read_json</span><span class="p">(</span><span class="n">json_path</span><span class="p">)</span>
<span class="k">return</span> <span class="n">split</span><span class="p">[</span><span class="s1">&#39;tracklets&#39;</span><span class="p">]</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;=&gt; Generating split json file (** this might take a while **)&#39;</span><span class="p">)</span>
<span class="n">pdirs</span> <span class="o">=</span> <span class="n">glob</span><span class="o">.</span><span class="n">glob</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">dir_path</span><span class="p">,</span> <span class="s1">&#39;*&#39;</span><span class="p">))</span> <span class="c1"># avoid .DS_Store</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;Processing &quot;</span><span class="si">{}</span><span class="s1">&quot; with </span><span class="si">{}</span><span class="s1"> person identities&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">dir_path</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">pdirs</span><span class="p">)))</span>
<span class="n">pid_container</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
<span class="k">for</span> <span class="n">pdir</span> <span class="ow">in</span> <span class="n">pdirs</span><span class="p">:</span>
<span class="n">pid</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">pdir</span><span class="p">))</span>
<span class="n">pid_container</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">pid</span><span class="p">)</span>
<span class="n">pid2label</span> <span class="o">=</span> <span class="p">{</span><span class="n">pid</span><span class="p">:</span><span class="n">label</span> <span class="k">for</span> <span class="n">label</span><span class="p">,</span> <span class="n">pid</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">pid_container</span><span class="p">)}</span>
<span class="n">tracklets</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">pdir</span> <span class="ow">in</span> <span class="n">pdirs</span><span class="p">:</span>
<span class="n">pid</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">pdir</span><span class="p">))</span>
<span class="k">if</span> <span class="n">relabel</span><span class="p">:</span>
<span class="n">pid</span> <span class="o">=</span> <span class="n">pid2label</span><span class="p">[</span><span class="n">pid</span><span class="p">]</span>
<span class="n">tdirs</span> <span class="o">=</span> <span class="n">glob</span><span class="o">.</span><span class="n">glob</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">pdir</span><span class="p">,</span> <span class="s1">&#39;*&#39;</span><span class="p">))</span>
<span class="k">for</span> <span class="n">tdir</span> <span class="ow">in</span> <span class="n">tdirs</span><span class="p">:</span>
<span class="n">raw_img_paths</span> <span class="o">=</span> <span class="n">glob</span><span class="o">.</span><span class="n">glob</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">tdir</span><span class="p">,</span> <span class="s1">&#39;*.jpg&#39;</span><span class="p">))</span>
<span class="n">num_imgs</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">raw_img_paths</span><span class="p">)</span>
<span class="k">if</span> <span class="n">num_imgs</span> <span class="o">&lt;</span> <span class="bp">self</span><span class="o">.</span><span class="n">min_seq_len</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">img_paths</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">img_idx</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">num_imgs</span><span class="p">):</span>
<span class="c1"># some tracklet starts from 0002 instead of 0001</span>
<span class="n">img_idx_name</span> <span class="o">=</span> <span class="s1">&#39;F&#39;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">img_idx</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span><span class="o">.</span><span class="n">zfill</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">glob</span><span class="o">.</span><span class="n">glob</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">tdir</span><span class="p">,</span> <span class="s1">&#39;*&#39;</span> <span class="o">+</span> <span class="n">img_idx_name</span> <span class="o">+</span> <span class="s1">&#39;*.jpg&#39;</span><span class="p">))</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">res</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="s1">&#39;Index name </span><span class="si">{}</span><span class="s1"> in </span><span class="si">{}</span><span class="s1"> is missing, skip&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">img_idx_name</span><span class="p">,</span> <span class="n">tdir</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">img_paths</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">res</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="n">img_name</span> <span class="o">=</span> <span class="n">osp</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">img_paths</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">if</span> <span class="n">img_name</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s1">&#39;_&#39;</span><span class="p">)</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="c1"># old naming format: 0001C6F0099X30823.jpg</span>
<span class="n">camid</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">img_name</span><span class="p">[</span><span class="mi">5</span><span class="p">])</span> <span class="o">-</span> <span class="mi">1</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># new naming format: 0001_C6_F0099_X30823.jpg</span>
<span class="n">camid</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">img_name</span><span class="p">[</span><span class="mi">6</span><span class="p">])</span> <span class="o">-</span> <span class="mi">1</span>
<span class="n">img_paths</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">img_paths</span><span class="p">)</span>
<span class="n">tracklets</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">img_paths</span><span class="p">,</span> <span class="n">pid</span><span class="p">,</span> <span class="n">camid</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;Saving split to </span><span class="si">{}</span><span class="s1">&#39;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">json_path</span><span class="p">))</span>
<span class="n">split_dict</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;tracklets&#39;</span><span class="p">:</span> <span class="n">tracklets</span><span class="p">}</span>
<span class="n">write_json</span><span class="p">(</span><span class="n">split_dict</span><span class="p">,</span> <span class="n">json_path</span><span class="p">)</span>
<span class="k">return</span> <span class="n">tracklets</span></div>
</pre></div>
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