title: How to display custom images in TensorBoard using Keras?
body: <p>I'm working on a segmentation problem in Keras and I want to display segmentation results at the end of every training epoch.</p>
  
  <p>I want something similar to <a href="https://stackoverflow.com/questions/38543850/tensorflow-how-to-display-custom-images-in-tensorboard-e-g-matplotlib-plots"><em>Tensorflow: How to Display Custom Images in Tensorboard (e.g. Matplotlib Plots)</em></a>, but using Keras. I know that Keras has the <a href="https://keras.io/callbacks/#tensorboard" rel="noreferrer"><code>TensorBoard</code></a> callback but it seems limited for this purpose.</p>
  
  <p>I know this would break the Keras backend abstraction, but I'm interested in using TensorFlow backend anyway.</p>
  
  <p>Is it possible to achieve that with Keras + TensorFlow?</p>