e sample the noise once per pixel.</span>
    <span class="c1"># For the other 50% of all images, we sample the noise per pixel AND</span>
    <span class="c1"># channel. This can change the color (not only brightness) of the</span>
    <span class="c1"># pixels.</span>
    <span class="n">iaa</span><span class="o">.</span><span class="n">AdditiveGaussianNoise</span><span class="p">(</span><span class="n">loc</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">sca