><span class="op">[</span><span class="str">'H'</span><span class="op">]</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t56" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t57" class="stm run hide_run">        <span class="nam">validation_data</span> <span class="op">=</span> <span class="nam">self</span><span class="op">.</span><span class="nam">convert_images</span><span class="op">(</span><span class="nam">params</span><span class="op">[</span><span class="str">'IMA