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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<h1>Source code for torchreid.data.datasets.video.prid2011</h1><div class="highlight"><pre>
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<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
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<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">print_function</span>
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<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">division</span>
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<span class="kn">import</span> <span class="nn">sys</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">os.path</span> <span class="k">as</span> <span class="nn">osp</span>
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<span class="kn">import</span> <span class="nn">glob</span>
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<span class="kn">from</span> <span class="nn">torchreid.data.datasets</span> <span class="k">import</span> <span class="n">VideoDataset</span>
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<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>
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<div class="viewcode-block" id="PRID2011"><a class="viewcode-back" href="../../../../../pkg/data.html#torchreid.data.datasets.video.prid2011.PRID2011">[docs]</a><span class="k">class</span> <span class="nc">PRID2011</span><span class="p">(</span><span class="n">VideoDataset</span><span class="p">):</span>
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<span class="sd">"""PRID2011.</span>
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<span class="sd"> Reference:</span>
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<span class="sd"> Hirzer et al. Person Re-Identification by Descriptive and</span>
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<span class="sd"> Discriminative Classification. SCIA 2011.</span>
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<span class="sd"> URL: `<https://www.tugraz.at/institute/icg/research/team-bischof/lrs/downloads/PRID11/>`_</span>
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<span class="sd"> </span>
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<span class="sd"> Dataset statistics:</span>
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<span class="sd"> - identities: 200.</span>
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<span class="sd"> - tracklets: 400.</span>
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<span class="sd"> - cameras: 2.</span>
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<span class="sd"> """</span>
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<span class="n">dataset_dir</span> <span class="o">=</span> <span class="s1">'prid2011'</span>
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<span class="n">dataset_url</span> <span class="o">=</span> <span class="kc">None</span>
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<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">''</span><span class="p">,</span> <span class="n">split_id</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>
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<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>
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<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>
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<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>
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<span class="bp">self</span><span class="o">.</span><span class="n">split_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">'splits_prid2011.json'</span><span class="p">)</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">cam_a_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">'prid_2011'</span><span class="p">,</span> <span class="s1">'multi_shot'</span><span class="p">,</span> <span class="s1">'cam_a'</span><span class="p">)</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">cam_b_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">'prid_2011'</span><span class="p">,</span> <span class="s1">'multi_shot'</span><span class="p">,</span> <span class="s1">'cam_b'</span><span class="p">)</span>
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<span class="n">required_files</span> <span class="o">=</span> <span class="p">[</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">dataset_dir</span><span class="p">,</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">cam_a_dir</span><span class="p">,</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">cam_b_dir</span>
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<span class="p">]</span>
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<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>
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<span class="n">splits</span> <span class="o">=</span> <span class="n">read_json</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">split_path</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">split_id</span> <span class="o">>=</span> <span class="nb">len</span><span class="p">(</span><span class="n">splits</span><span class="p">):</span>
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<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'split_id exceeds range, received </span><span class="si">{}</span><span class="s1">, but expected between 0 and </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">split_id</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">splits</span><span class="p">)</span><span class="o">-</span><span class="mi">1</span><span class="p">))</span>
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<span class="n">split</span> <span class="o">=</span> <span class="n">splits</span><span class="p">[</span><span class="n">split_id</span><span class="p">]</span>
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<span class="n">train_dirs</span><span class="p">,</span> <span class="n">test_dirs</span> <span class="o">=</span> <span class="n">split</span><span class="p">[</span><span class="s1">'train'</span><span class="p">],</span> <span class="n">split</span><span class="p">[</span><span class="s1">'test'</span><span class="p">]</span>
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<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="n">train_dirs</span><span class="p">,</span> <span class="n">cam1</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">cam2</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
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<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="n">test_dirs</span><span class="p">,</span> <span class="n">cam1</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">cam2</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
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<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="n">test_dirs</span><span class="p">,</span> <span class="n">cam1</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">cam2</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
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<span class="nb">super</span><span class="p">(</span><span class="n">PRID2011</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>
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<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">dirnames</span><span class="p">,</span> <span class="n">cam1</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">cam2</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
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<span class="n">tracklets</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="n">dirname2pid</span> <span class="o">=</span> <span class="p">{</span><span class="n">dirname</span><span class="p">:</span><span class="n">i</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">dirname</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">dirnames</span><span class="p">)}</span>
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<span class="k">for</span> <span class="n">dirname</span> <span class="ow">in</span> <span class="n">dirnames</span><span class="p">:</span>
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<span class="k">if</span> <span class="n">cam1</span><span class="p">:</span>
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<span class="n">person_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">cam_a_dir</span><span class="p">,</span> <span class="n">dirname</span><span class="p">)</span>
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<span class="n">img_names</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">person_dir</span><span class="p">,</span> <span class="s1">'*.png'</span><span class="p">))</span>
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<span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">img_names</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span>
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<span class="n">img_names</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">img_names</span><span class="p">)</span>
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<span class="n">pid</span> <span class="o">=</span> <span class="n">dirname2pid</span><span class="p">[</span><span class="n">dirname</span><span class="p">]</span>
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<span class="n">tracklets</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">img_names</span><span class="p">,</span> <span class="n">pid</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span>
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<span class="k">if</span> <span class="n">cam2</span><span class="p">:</span>
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<span class="n">person_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">cam_b_dir</span><span class="p">,</span> <span class="n">dirname</span><span class="p">)</span>
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<span class="n">img_names</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">person_dir</span><span class="p">,</span> <span class="s1">'*.png'</span><span class="p">))</span>
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<span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">img_names</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span>
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<span class="n">img_names</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">img_names</span><span class="p">)</span>
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<span class="n">pid</span> <span class="o">=</span> <span class="n">dirname2pid</span><span class="p">[</span><span class="n">dirname</span><span class="p">]</span>
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<span class="n">tracklets</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">img_names</span><span class="p">,</span> <span class="n">pid</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span>
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<span class="k">return</span> <span class="n">tracklets</span></div>
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</pre></div>
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