HI very nice implemented cyclegan I have a few questions...

1. What does "Resize Convolution" mean?
2. I wonder what is different from the original code of the author.

I've tried to train the model on original summer2winter_yosemite dataset. After ~20 epochs all sample images turned completely black, and all all loss parameters turned to nan. However, the model continued to run for 30 more epochs regularly saving checkpoints until I stopped it.

I've also used another, my own dataset, and it ran correctly for 70 epochs at least, unfortunately the only result I had was color inversion of images. Any advice on changing training parameters (I used default)?

Hi! It is a great implementation of Cyclegan, providing excellent results on Hiptensorflow and ROCm. However, I could not use it to generate test images of different from 256x256 sizes. How can I change that?

For now, I have trained the model on 256x256 images and try to test it on bigger ones. I tried adding two more flags to main.py: flags.DEFINE_integer("image_width", 420, "The size of image to use (will be center cropped) [256]") flags.DEFINE_integer("image_height", 420, "The size of image to use (will be center cropped) [256]")

Which I use later in Test section: test_A = tf.placeholder(tf.float32, [FLAGS.batch_size, FLAGS.image_height, FLAGS.image_width, FLAGS.c_dim], name='test_x') test_B = tf.placeholder(tf.float32, [FLAGS.batch_size, FLAGS.image_height, FLAGS.image_width, FLAGS.c_dim], name='test_y')

However, I always get error: Invalid argument: Conv2DSlowBackpropInput: Size of out_backprop doesn't match computed: actual = 105, computed = 64 Traceback (most recent call last): File "main.py", line 285, in tf.app.run() File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/platform/app.py", line 44, in run _sys.exit(main(_sys.argv[:1] + flags_passthrough)) File "main.py", line 281, in main test_cyclegan() File "main.py", line 262, in test_cyclegan fake_img = sess.run(net_g_logits, feed_dict={in_var: sample_image}) File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 767, in run run_metadata_ptr) File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 965, in _run feed_dict_string, options, run_metadata) File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 1015, in _do_run target_list, options, run_metadata) File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 1035, in _do_call raise type(e)(node_def, op, message) tensorflow.python.framework.errors_impl.InvalidArgumentError: Conv2DSlowBackpropInput: Size of out_backprop doesn't match computed: actual = 105, computed = 64 [[Node: gen_A2B/u64/conv2d_transpose = Conv2DBackpropInput[T=DT_FLOAT, data_format="NHWC", padding="SAME", strides=[1, 2, 2, 1], use_cudnn_on_gpu=true, _device="/job:localhost/replica:0/task:0/gpu:0"](gen_A2B/u64/conv2d_transpose/output_shape, gen_A2B/u64/W_deconv2d/read, gen_A2B/b_residual_add/8)]]

Is there any way to choose output image size? Original Cyclegan has special option to choose it - how can i implement it? resize_or_crop = 'resize_and_crop', -- resizing/cropping strategy: resize_and_crop | crop | scale_width | scale_height

Any help would be appreciated!

I noticed in https://github.com/luoxier/CycleGAN_Tensorlayer/blob/master/main.py#L88 you obtain the logit of image sampled from imagepool but do not use it, is that for some reason or just do not intend to implement it?

Hi @zsdonghao @luoxier , Is there an error in your main.py: _, errGB2A = sess.run([g_b2a_optim, g_b2a_loss], feed_dict={real_A: batch_imgB, real_B: batch_imgB}) Does it should be: _, errGB2A = sess.run([g_b2a_optim, g_b2a_loss], feed_dict={real_A: batch_imgA, real_B: batch_imgB}) Could you please check it and let me know, thanks.

There are sunflower2daisy and leopard2tiger results shown in readme, but I don't find any clue about where to download them in code. In https://github.com/luoxier/CycleGAN_Tensorlayer/blob/master/main.py#L32 an optional value for dataset_dir is sunflower2daisy, where can I get it? The author of original paper doesn't seem to provide it.