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<pre class="cython line score-0">&#xA0;<span class="">09</span>: <span class="nd">@cython</span><span
class="o">.</span><span class="n">wraparound</span><span class="p">(</span><span
class="bp">False</span><span class="p">)</span></pre>
<pre class="cython line score-0">&#xA0;<span class="">10</span>: <span class="nd">@cython</span><span
class="o">.</span><span class="n">cdivision</span><span class="p">(</span><span class="bp">True</span><span
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<pre class="cython line score-0">&#xA0;<span class="">11</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">12</span>: <span class="c"># 3 parameters:</span></pre>
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<pre class="cython line score-0">&#xA0;<span class="">14</span>: <span class="c"># - kernel size (actually this is the radius, kernel is 2*k+1)</span></pre>
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<pre class="cython line score-67"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">16</span>: <span class="k">def</span> <span class="nf">normalize</span><span
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class="n">img</span><span class="p">,</span> <span class="nb">int</span> <span class="n">kernel_size</span> <span
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<pre class="cython line score-0">&#xA0;<span class="">17</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">18</span>: <span class="c"># image dimensions</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">19</span>: <span class="k">cdef</span> <span class="kt">Py_ssize_t</span> <span
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<pre class="cython line score-0"
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<pre class="cython line score-0">&#xA0;<span class="">21</span>: </pre>
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<pre class="cython line score-46"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">23</span>: <span class="n">img_lcn</span> <span class="o">=</span> <span
class="n">np</span><span class="o">.</span><span class="n">zeros</span><span class="p">((</span><span
class="n">M</span><span class="p">,</span> <span class="n">N</span><span class="p">),</span> <span
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<pre class="cython line score-2"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">25</span>: <span class="k">cdef</span> <span class="kt">float</span>[<span class="p">:,</span> <span
class="p">:]</span> <span class="n">img_lcn_view</span> <span class="o">=</span> <span
class="n">img_lcn</span></pre>
<pre class='cython code score-2 '> __pyx_t_6 = <span
class='pyx_c_api'>__Pyx_PyObject_to_MemoryviewSlice_dsds_float</span>(__pyx_v_img_lcn, PyBUF_WRITABLE);<span
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__pyx_t_6.data = NULL;
</pre>
<pre class="cython line score-2"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">26</span>: <span class="k">cdef</span> <span class="kt">float</span>[<span class="p">:,</span> <span
class="p">:]</span> <span class="n">img_std_view</span> <span class="o">=</span> <span
class="n">img_std</span></pre>
<pre class='cython code score-2 '> __pyx_t_6 = <span
class='pyx_c_api'>__Pyx_PyObject_to_MemoryviewSlice_dsds_float</span>(__pyx_v_img_std, PyBUF_WRITABLE);<span
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__pyx_t_6.data = NULL;
</pre>
<pre class="cython line score-0">&#xA0;<span class="">27</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">28</span>: <span class="c"># temporary c variables</span></pre>
<pre class="cython line score-0">&#xA0;<span class="">29</span>: <span class="k">cdef</span> <span class="kt">float</span> <span
class="nf">tmp</span><span class="p">,</span> <span class="nf">mean</span><span class="p">,</span> <span
class="nf">stddev</span></pre>
<pre class="cython line score-0">&#xA0;<span class="">30</span>: <span class="k">cdef</span> <span class="kt">Py_ssize_t</span> <span
class="nf">m</span><span class="p">,</span> <span class="nf">n</span><span class="p">,</span> <span
class="nf">i</span><span class="p">,</span> <span class="nf">j</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">31</span>: <span class="k">cdef</span> <span class="kt">Py_ssize_t</span> <span
class="nf">ks</span> <span class="o">=</span> <span class="n">kernel_size</span></pre>
<pre class='cython code score-0 '> __pyx_v_ks = __pyx_v_kernel_size;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">32</span>: <span class="k">cdef</span> <span class="kt">float</span> <span
class="nf">eps</span> <span class="o">=</span> <span class="n">epsilon</span></pre>
<pre class='cython code score-0 '> __pyx_v_eps = __pyx_v_epsilon;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">33</span>: <span class="k">cdef</span> <span class="kt">float</span> <span
class="nf">num</span> <span class="o">=</span> <span class="p">(</span><span class="n">ks</span><span
class="o">*</span><span class="mf">2</span><span class="o">+</span><span class="mf">1</span><span class="p">)</span><span
class="o">**</span><span class="mf">2</span></pre>
<pre class='cython code score-0 '> __pyx_v_num = __Pyx_pow_Py_ssize_t(((__pyx_v_ks * 2) + 1), 2);
</pre>
<pre class="cython line score-0">&#xA0;<span class="">34</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">35</span>: <span
class="c"># for all pixels do</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">36</span>: <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span
class="nb">range</span><span class="p">(</span><span class="n">ks</span><span class="p">,</span><span
class="n">M</span><span class="o">-</span><span class="n">ks</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_7 = (__pyx_v_M - __pyx_v_ks);
__pyx_t_8 = __pyx_t_7;
for (__pyx_t_9 = __pyx_v_ks; __pyx_t_9 &lt; __pyx_t_8; __pyx_t_9+=1) {
__pyx_v_m = __pyx_t_9;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">37</span>: <span class="k">for</span> <span class="n">n</span> <span
class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">ks</span><span
class="p">,</span><span class="n">N</span><span class="o">-</span><span class="n">ks</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_10 = (__pyx_v_N - __pyx_v_ks);
__pyx_t_11 = __pyx_t_10;
for (__pyx_t_12 = __pyx_v_ks; __pyx_t_12 &lt; __pyx_t_11; __pyx_t_12+=1) {
__pyx_v_n = __pyx_t_12;
</pre>
<pre class="cython line score-0">&#xA0;<span class="">38</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">39</span>: <span class="c"># calculate mean</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">40</span>: <span class="n">mean</span> <span class="o">=</span> <span
class="mf">0</span><span class="p">;</span></pre>
<pre class='cython code score-0 '> __pyx_v_mean = 0.0;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">41</span>: <span class="k">for</span> <span class="n">i</span> <span
class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="o">-</span><span
class="n">ks</span><span class="p">,</span><span class="n">ks</span><span class="o">+</span><span
class="mf">1</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_13 = (__pyx_v_ks + 1);
__pyx_t_14 = __pyx_t_13;
for (__pyx_t_15 = (-__pyx_v_ks); __pyx_t_15 &lt; __pyx_t_14; __pyx_t_15+=1) {
__pyx_v_i = __pyx_t_15;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">42</span>: <span class="k">for</span> <span class="n">j</span> <span
class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="o">-</span><span
class="n">ks</span><span class="p">,</span><span class="n">ks</span><span class="o">+</span><span
class="mf">1</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_16 = (__pyx_v_ks + 1);
__pyx_t_17 = __pyx_t_16;
for (__pyx_t_18 = (-__pyx_v_ks); __pyx_t_18 &lt; __pyx_t_17; __pyx_t_18+=1) {
__pyx_v_j = __pyx_t_18;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">43</span>: <span class="n">mean</span> <span class="o">+=</span> <span
class="n">img</span><span class="p">[</span><span class="n">m</span><span class="o">+</span><span class="n">i</span><span
class="p">,</span> <span class="n">n</span><span class="o">+</span><span class="n">j</span><span
class="p">]</span></pre>
<pre class='cython code score-0 '> __pyx_t_19 = (__pyx_v_m + __pyx_v_i);
__pyx_t_20 = (__pyx_v_n + __pyx_v_j);
__pyx_v_mean = (__pyx_v_mean + (*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img.data + __pyx_t_19 * __pyx_v_img.strides[0]) ) + __pyx_t_20 * __pyx_v_img.strides[1]) ))));
}
}
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">44</span>: <span class="n">mean</span> <span class="o">=</span> <span
class="n">mean</span><span class="o">/</span><span class="n">num</span></pre>
<pre class='cython code score-0 '> __pyx_v_mean = (__pyx_v_mean / __pyx_v_num);
</pre>
<pre class="cython line score-0">&#xA0;<span class="">45</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">46</span>: <span
class="c"># calculate std dev</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">47</span>: <span class="n">stddev</span> <span class="o">=</span> <span
class="mf">0</span><span class="p">;</span></pre>
<pre class='cython code score-0 '> __pyx_v_stddev = 0.0;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">48</span>: <span class="k">for</span> <span class="n">i</span> <span
class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="o">-</span><span
class="n">ks</span><span class="p">,</span><span class="n">ks</span><span class="o">+</span><span
class="mf">1</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_13 = (__pyx_v_ks + 1);
__pyx_t_14 = __pyx_t_13;
for (__pyx_t_15 = (-__pyx_v_ks); __pyx_t_15 &lt; __pyx_t_14; __pyx_t_15+=1) {
__pyx_v_i = __pyx_t_15;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">49</span>: <span class="k">for</span> <span class="n">j</span> <span
class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="o">-</span><span
class="n">ks</span><span class="p">,</span><span class="n">ks</span><span class="o">+</span><span
class="mf">1</span><span class="p">):</span></pre>
<pre class='cython code score-0 '> __pyx_t_16 = (__pyx_v_ks + 1);
__pyx_t_17 = __pyx_t_16;
for (__pyx_t_18 = (-__pyx_v_ks); __pyx_t_18 &lt; __pyx_t_17; __pyx_t_18+=1) {
__pyx_v_j = __pyx_t_18;
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">50</span>: <span class="n">stddev</span> <span class="o">=</span> <span
class="n">stddev</span> <span class="o">+</span> <span class="p">(</span><span class="n">img</span><span
class="p">[</span><span class="n">m</span><span class="o">+</span><span class="n">i</span><span
class="p">,</span> <span class="n">n</span><span class="o">+</span><span class="n">j</span><span
class="p">]</span><span class="o">-</span><span class="n">mean</span><span class="p">)</span><span
class="o">*</span><span class="p">(</span><span class="n">img</span><span class="p">[</span><span class="n">m</span><span
class="o">+</span><span class="n">i</span><span class="p">,</span> <span class="n">n</span><span
class="o">+</span><span class="n">j</span><span class="p">]</span><span class="o">-</span><span class="n">mean</span><span
class="p">)</span></pre>
<pre class='cython code score-0 '> __pyx_t_21 = (__pyx_v_m + __pyx_v_i);
__pyx_t_22 = (__pyx_v_n + __pyx_v_j);
__pyx_t_23 = (__pyx_v_m + __pyx_v_i);
__pyx_t_24 = (__pyx_v_n + __pyx_v_j);
__pyx_v_stddev = (__pyx_v_stddev + (((*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img.data + __pyx_t_21 * __pyx_v_img.strides[0]) ) + __pyx_t_22 * __pyx_v_img.strides[1]) ))) - __pyx_v_mean) * ((*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img.data + __pyx_t_23 * __pyx_v_img.strides[0]) ) + __pyx_t_24 * __pyx_v_img.strides[1]) ))) - __pyx_v_mean)));
}
}
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">51</span>: <span class="n">stddev</span> <span class="o">=</span> <span
class="n">sqrt</span><span class="p">(</span><span class="n">stddev</span><span class="o">/</span><span
class="n">num</span><span class="p">)</span></pre>
<pre class='cython code score-0 '> __pyx_v_stddev = sqrt((__pyx_v_stddev / __pyx_v_num));
</pre>
<pre class="cython line score-0">&#xA0;<span class="">52</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">53</span>: <span class="c"># compute normalized image (add epsilon) and std dev image</span></pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">54</span>: <span class="n">img_lcn_view</span><span class="p">[</span><span
class="n">m</span><span class="p">,</span> <span class="n">n</span><span class="p">]</span> <span class="o">=</span> <span
class="p">(</span><span class="n">img</span><span class="p">[</span><span class="n">m</span><span class="p">,</span> <span
class="n">n</span><span class="p">]</span><span class="o">-</span><span class="n">mean</span><span
class="p">)</span><span class="o">/</span><span class="p">(</span><span class="n">stddev</span><span
class="o">+</span><span class="n">eps</span><span class="p">)</span></pre>
<pre class='cython code score-0 '> __pyx_t_25 = __pyx_v_m;
__pyx_t_26 = __pyx_v_n;
__pyx_t_27 = __pyx_v_m;
__pyx_t_28 = __pyx_v_n;
*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img_lcn_view.data + __pyx_t_27 * __pyx_v_img_lcn_view.strides[0]) ) + __pyx_t_28 * __pyx_v_img_lcn_view.strides[1]) )) = (((*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img.data + __pyx_t_25 * __pyx_v_img.strides[0]) ) + __pyx_t_26 * __pyx_v_img.strides[1]) ))) - __pyx_v_mean) / (__pyx_v_stddev + __pyx_v_eps));
</pre>
<pre class="cython line score-0"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">55</span>: <span class="n">img_std_view</span><span class="p">[</span><span
class="n">m</span><span class="p">,</span> <span class="n">n</span><span class="p">]</span> <span class="o">=</span> <span
class="n">stddev</span></pre>
<pre class='cython code score-0 '> __pyx_t_29 = __pyx_v_m;
__pyx_t_30 = __pyx_v_n;
*((float *) ( /* dim=1 */ (( /* dim=0 */ (__pyx_v_img_std_view.data + __pyx_t_29 * __pyx_v_img_std_view.strides[0]) ) + __pyx_t_30 * __pyx_v_img_std_view.strides[1]) )) = __pyx_v_stddev;
}
}
</pre>
<pre class="cython line score-0">&#xA0;<span class="">56</span>: </pre>
<pre class="cython line score-0">&#xA0;<span class="">57</span>: <span class="c"># return both</span></pre>
<pre class="cython line score-10"
onclick="(function(s){s.display=s.display==='block'?'none':'block'})(this.nextElementSibling.style)">+<span
class="">58</span>: <span class="k">return</span> <span class="n">img_lcn</span><span class="p">,</span> <span
class="n">img_std</span></pre>
<pre class='cython code score-10 '> <span class='pyx_macro_api'>__Pyx_XDECREF</span>(__pyx_r);
__pyx_t_1 = <span class='py_c_api'>PyTuple_New</span>(2);<span class='error_goto'> if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 58, __pyx_L1_error)</span>
<span class='refnanny'>__Pyx_GOTREF</span>(__pyx_t_1);
<span class='pyx_macro_api'>__Pyx_INCREF</span>(__pyx_v_img_lcn);
<span class='refnanny'>__Pyx_GIVEREF</span>(__pyx_v_img_lcn);
<span class='py_macro_api'>PyTuple_SET_ITEM</span>(__pyx_t_1, 0, __pyx_v_img_lcn);
<span class='pyx_macro_api'>__Pyx_INCREF</span>(__pyx_v_img_std);
<span class='refnanny'>__Pyx_GIVEREF</span>(__pyx_v_img_std);
<span class='py_macro_api'>PyTuple_SET_ITEM</span>(__pyx_t_1, 1, __pyx_v_img_std);
__pyx_r = __pyx_t_1;
__pyx_t_1 = 0;
goto __pyx_L0;
</pre>
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