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<h1>Source code for torchvision.datasets.flickr</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">collections</span> <span class="k">import</span> <span class="n">defaultdict</span>
<span class="kn">from</span> <span class="nn">PIL</span> <span class="k">import</span> <span class="n">Image</span>
<span class="kn">from</span> <span class="nn">six.moves</span> <span class="k">import</span> <span class="n">html_parser</span>
<span class="kn">import</span> <span class="nn">glob</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">from</span> <span class="nn">.vision</span> <span class="k">import</span> <span class="n">VisionDataset</span>
<span class="k">class</span> <span class="nc">Flickr8kParser</span><span class="p">(</span><span class="n">html_parser</span><span class="o">.</span><span class="n">HTMLParser</span><span class="p">):</span>
<span class="sd">"""Parser for extracting captions from the Flickr8k dataset web page."""</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="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">Flickr8kParser</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="bp">self</span><span class="o">.</span><span class="n">root</span> <span class="o">=</span> <span class="n">root</span>
<span class="c1"># Data structure to store captions</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span> <span class="o">=</span> <span class="p">{}</span>
<span class="c1"># State variables</span>
<span class="bp">self</span><span class="o">.</span><span class="n">in_table</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_tag</span> <span class="o">=</span> <span class="kc">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_img</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">handle_starttag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tag</span><span class="p">,</span> <span class="n">attrs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_tag</span> <span class="o">=</span> <span class="n">tag</span>
<span class="k">if</span> <span class="n">tag</span> <span class="o">==</span> <span class="s1">'table'</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">in_table</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">def</span> <span class="nf">handle_endtag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tag</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_tag</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">if</span> <span class="n">tag</span> <span class="o">==</span> <span class="s1">'table'</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">in_table</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">handle_data</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">in_table</span><span class="p">:</span>
<span class="k">if</span> <span class="n">data</span> <span class="o">==</span> <span class="s1">'Image Not Found'</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_img</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_tag</span> <span class="o">==</span> <span class="s1">'a'</span><span class="p">:</span>
<span class="n">img_id</span> <span class="o">=</span> <span class="n">data</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'/'</span><span class="p">)[</span><span class="o">-</span><span class="mi">2</span><span class="p">]</span>
<span class="n">img_id</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</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="n">img_id</span> <span class="o">+</span> <span class="s1">'_*.jpg'</span><span class="p">)</span>
<span class="n">img_id</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">img_id</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">current_img</span> <span class="o">=</span> <span class="n">img_id</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">img_id</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_tag</span> <span class="o">==</span> <span class="s1">'li'</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_img</span><span class="p">:</span>
<span class="n">img_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">current_img</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">img_id</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">data</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span>
<div class="viewcode-block" id="Flickr8k"><a class="viewcode-back" href="../../../torchvision/datasets.html#torchvision.datasets.Flickr8k">[docs]</a><span class="k">class</span> <span class="nc">Flickr8k</span><span class="p">(</span><span class="n">VisionDataset</span><span class="p">):</span>
<span class="sd">"""`Flickr8k Entities <http://nlp.cs.illinois.edu/HockenmaierGroup/8k-pictures.html>`_ Dataset.</span>
<span class="sd"> Args:</span>
<span class="sd"> root (string): Root directory where images are downloaded to.</span>
<span class="sd"> ann_file (string): Path to annotation file.</span>
<span class="sd"> transform (callable, optional): A function/transform that takes in a PIL image</span>
<span class="sd"> and returns a transformed version. E.g, ``transforms.ToTensor``</span>
<span class="sd"> target_transform (callable, optional): A function/transform that takes in the</span>
<span class="sd"> target and transforms it.</span>
<span class="sd"> """</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="p">,</span> <span class="n">ann_file</span><span class="p">,</span> <span class="n">transform</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">target_transform</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">Flickr8k</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">root</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">transform</span> <span class="o">=</span> <span class="n">transform</span>
<span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span> <span class="o">=</span> <span class="n">target_transform</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ann_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">expanduser</span><span class="p">(</span><span class="n">ann_file</span><span class="p">)</span>
<span class="c1"># Read annotations and store in a dict</span>
<span class="n">parser</span> <span class="o">=</span> <span class="n">Flickr8kParser</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="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ann_file</span><span class="p">)</span> <span class="k">as</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">parser</span><span class="o">.</span><span class="n">feed</span><span class="p">(</span><span class="n">fh</span><span class="o">.</span><span class="n">read</span><span class="p">())</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">annotations</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ids</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="nb">sorted</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="o">.</span><span class="n">keys</span><span class="p">()))</span>
<div class="viewcode-block" id="Flickr8k.__getitem__"><a class="viewcode-back" href="../../../torchvision/datasets.html#torchvision.datasets.Flickr8k.__getitem__">[docs]</a> <span class="k">def</span> <span class="nf">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Args:</span>
<span class="sd"> index (int): Index</span>
<span class="sd"> Returns:</span>
<span class="sd"> tuple: Tuple (image, target). target is a list of captions for the image.</span>
<span class="sd"> """</span>
<span class="n">img_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">[</span><span class="n">index</span><span class="p">]</span>
<span class="c1"># Image</span>
<span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">img_id</span><span class="p">)</span><span class="o">.</span><span class="n">convert</span><span class="p">(</span><span class="s1">'RGB'</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">transform</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">img</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
<span class="c1"># Captions</span>
<span class="n">target</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">img_id</span><span class="p">]</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">target</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span><span class="p">(</span><span class="n">target</span><span class="p">)</span>
<span class="k">return</span> <span class="n">img</span><span class="p">,</span> <span class="n">target</span></div>
<span class="k">def</span> <span class="nf">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">)</span></div>
<div class="viewcode-block" id="Flickr30k"><a class="viewcode-back" href="../../../torchvision/datasets.html#torchvision.datasets.Flickr30k">[docs]</a><span class="k">class</span> <span class="nc">Flickr30k</span><span class="p">(</span><span class="n">VisionDataset</span><span class="p">):</span>
<span class="sd">"""`Flickr30k Entities <http://web.engr.illinois.edu/~bplumme2/Flickr30kEntities/>`_ Dataset.</span>
<span class="sd"> Args:</span>
<span class="sd"> root (string): Root directory where images are downloaded to.</span>
<span class="sd"> ann_file (string): Path to annotation file.</span>
<span class="sd"> transform (callable, optional): A function/transform that takes in a PIL image</span>
<span class="sd"> and returns a transformed version. E.g, ``transforms.ToTensor``</span>
<span class="sd"> target_transform (callable, optional): A function/transform that takes in the</span>
<span class="sd"> target and transforms it.</span>
<span class="sd"> """</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="p">,</span> <span class="n">ann_file</span><span class="p">,</span> <span class="n">transform</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">target_transform</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">Flickr30k</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">root</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">transform</span> <span class="o">=</span> <span class="n">transform</span>
<span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span> <span class="o">=</span> <span class="n">target_transform</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ann_file</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">expanduser</span><span class="p">(</span><span class="n">ann_file</span><span class="p">)</span>
<span class="c1"># Read annotations and store in a dict</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span>
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ann_file</span><span class="p">)</span> <span class="k">as</span> <span class="n">fh</span><span class="p">:</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">img_id</span><span class="p">,</span> <span class="n">caption</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'</span><span class="se">\t</span><span class="s1">'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">img_id</span><span class="p">[:</span><span class="o">-</span><span class="mi">2</span><span class="p">]]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">caption</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ids</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="nb">sorted</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="o">.</span><span class="n">keys</span><span class="p">()))</span>
<div class="viewcode-block" id="Flickr30k.__getitem__"><a class="viewcode-back" href="../../../torchvision/datasets.html#torchvision.datasets.Flickr30k.__getitem__">[docs]</a> <span class="k">def</span> <span class="nf">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Args:</span>
<span class="sd"> index (int): Index</span>
<span class="sd"> Returns:</span>
<span class="sd"> tuple: Tuple (image, target). target is a list of captions for the image.</span>
<span class="sd"> """</span>
<span class="n">img_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">[</span><span class="n">index</span><span class="p">]</span>
<span class="c1"># Image</span>
<span class="n">filename</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</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="n">img_id</span><span class="p">)</span>
<span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">filename</span><span class="p">)</span><span class="o">.</span><span class="n">convert</span><span class="p">(</span><span class="s1">'RGB'</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">transform</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">img</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
<span class="c1"># Captions</span>
<span class="n">target</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">img_id</span><span class="p">]</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">target</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">target_transform</span><span class="p">(</span><span class="n">target</span><span class="p">)</span>
<span class="k">return</span> <span class="n">img</span><span class="p">,</span> <span class="n">target</span></div>
<span class="k">def</span> <span class="nf">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">)</span></div>
</pre></div>
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