summaries.py

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function



import tensorflow as tf

tfgan = tf.contrib.gan


def add_reconstruction_summaries(images, reconstructions, prebinary,
                                 num_imgs_to_visualize=8):
  """Adds image summaries."""
  reshaped_img = stack_images(images, reconstructions, num_imgs_to_visualize)

  tf.summary.image('real_vs_reconstruction', reshaped_img, max_outputs=1)
  if prebinary is not None:
    tf.summary.histogram('prebinary_codes', prebinary)


def stack_images(images, reconstructions, num_imgs_to_visualize=8):
  """Stack and reshape images to see compression effects."""
  to_reshape = (tf.unstack(images)[:num_imgs_to_visualize] +
                tf.unstack(reconstructions)[:num_imgs_to_visualize])
  reshaped_img = tfgan.eval.image_reshaper(
      to_reshape, num_cols=num_imgs_to_visualize)
  return reshaped_img