From 14beba63391e1ddc9a145bb638d9306086ad1a5c Mon Sep 17 00:00:00 2001
From: Volpeon <git@volpeon.ink>
Date: Fri, 7 Oct 2022 08:34:07 +0200
Subject: Training: Create multiple class images per training image

---
 dreambooth.py | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

(limited to 'dreambooth.py')

diff --git a/dreambooth.py b/dreambooth.py
index 0e69d79..24e6091 100644
--- a/dreambooth.py
+++ b/dreambooth.py
@@ -65,6 +65,12 @@ def parse_args():
         default=None,
         help="A token to use as a placeholder for the concept.",
     )
+    parser.add_argument(
+        "--num_class_images",
+        type=int,
+        default=2,
+        help="How many class images to generate per training image."
+    )
     parser.add_argument(
         "--repeats",
         type=int,
@@ -347,6 +353,7 @@ class Checkpointer:
             scheduler=scheduler,
         ).to(self.accelerator.device)
         pipeline.enable_attention_slicing()
+        pipeline.set_progress_bar_config(dynamic_ncols=True)
 
         train_data = self.datamodule.train_dataloader()
         val_data = self.datamodule.val_dataloader()
@@ -494,7 +501,7 @@ def main():
         pixel_values = [example["instance_images"] for example in examples]
 
         # concat class and instance examples for prior preservation
-        if args.class_identifier is not None and "class_prompt_ids" in examples[0]:
+        if args.num_class_images != 0 and "class_prompt_ids" in examples[0]:
             input_ids += [example["class_prompt_ids"] for example in examples]
             pixel_values += [example["class_images"] for example in examples]
 
@@ -518,6 +525,7 @@ def main():
         instance_identifier=args.instance_identifier,
         class_identifier=args.class_identifier,
         class_subdir="db_cls",
+        num_class_images=args.num_class_images,
         size=args.resolution,
         repeats=args.repeats,
         center_crop=args.center_crop,
@@ -528,7 +536,7 @@ def main():
     datamodule.prepare_data()
     datamodule.setup()
 
-    if args.class_identifier is not None:
+    if args.num_class_images != 0:
         missing_data = [item for item in datamodule.data if not item[1].exists()]
 
         if len(missing_data) != 0:
@@ -547,6 +555,7 @@ def main():
                 scheduler=scheduler,
             ).to(accelerator.device)
             pipeline.enable_attention_slicing()
+            pipeline.set_progress_bar_config(dynamic_ncols=True)
 
             for batch in batched_data:
                 image_name = [p[1] for p in batch]
@@ -645,11 +654,18 @@ def main():
             0,
             args.resolution, args.resolution, 7.5, 0.0, args.sample_steps)
 
-    local_progress_bar = tqdm(range(num_update_steps_per_epoch + num_val_steps_per_epoch),
-                              disable=not accelerator.is_local_main_process)
+    local_progress_bar = tqdm(
+        range(num_update_steps_per_epoch + num_val_steps_per_epoch),
+        disable=not accelerator.is_local_main_process,
+        dynamic_ncols=True
+    )
     local_progress_bar.set_description("Batch X out of Y")
 
-    global_progress_bar = tqdm(range(args.max_train_steps + val_steps), disable=not accelerator.is_local_main_process)
+    global_progress_bar = tqdm(
+        range(args.max_train_steps + val_steps),
+        disable=not accelerator.is_local_main_process,
+        dynamic_ncols=True
+    )
     global_progress_bar.set_description("Total progress")
 
     try:
@@ -686,7 +702,7 @@ def main():
                     # Predict the noise residual
                     noise_pred = unet(noisy_latents, timesteps, encoder_hidden_states).sample
 
-                    if args.class_identifier is not None:
+                    if args.num_class_images != 0:
                         # Chunk the noise and noise_pred into two parts and compute the loss on each part separately.
                         noise_pred, noise_pred_prior = torch.chunk(noise_pred, 2, dim=0)
                         noise, noise_prior = torch.chunk(noise, 2, dim=0)
-- 
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