Merge branch 'AUTOMATIC1111:master' into master

1 files changed, 241 insertions, 0 deletions

diff --git a/modules/aesthetic_clip.py b/modules/aesthetic_clip.py
new file mode 100644
index 00000000..8c828541
--- /dev/null
+++ b/modules/aesthetic_clip.py
@@ -0,0 +1,241 @@
+import copy
+import itertools
+import os
+from pathlib import Path
+import html
+import gc
+
+import gradio as gr
+import torch
+from PIL import Image
+from torch import optim
+
+from modules import shared
+from transformers import CLIPModel, CLIPProcessor, CLIPTokenizer
+from tqdm.auto import tqdm, trange
+from modules.shared import opts, device
+
+
+def get_all_images_in_folder(folder):
+    return [os.path.join(folder, f) for f in os.listdir(folder) if
+            os.path.isfile(os.path.join(folder, f)) and check_is_valid_image_file(f)]
+
+
+def check_is_valid_image_file(filename):
+    return filename.lower().endswith(('.png', '.jpg', '.jpeg', ".gif", ".tiff", ".webp"))
+
+
+def batched(dataset, total, n=1):
+    for ndx in range(0, total, n):
+        yield [dataset.__getitem__(i) for i in range(ndx, min(ndx + n, total))]
+
+
+def iter_to_batched(iterable, n=1):
+    it = iter(iterable)
+    while True:
+        chunk = tuple(itertools.islice(it, n))
+        if not chunk:
+            return
+        yield chunk
+
+
+def create_ui():
+    import modules.ui
+
+    with gr.Group():
+        with gr.Accordion("Open for Clip Aesthetic!", open=False):
+            with gr.Row():
+                aesthetic_weight = gr.Slider(minimum=0, maximum=1, step=0.01, label="Aesthetic weight",
+                                             value=0.9)
+                aesthetic_steps = gr.Slider(minimum=0, maximum=50, step=1, label="Aesthetic steps", value=5)
+
+            with gr.Row():
+                aesthetic_lr = gr.Textbox(label='Aesthetic learning rate',
+                                          placeholder="Aesthetic learning rate", value="0.0001")
+                aesthetic_slerp = gr.Checkbox(label="Slerp interpolation", value=False)
+                aesthetic_imgs = gr.Dropdown(sorted(shared.aesthetic_embeddings.keys()),
+                                             label="Aesthetic imgs embedding",
+                                             value="None")
+
+                modules.ui.create_refresh_button(aesthetic_imgs, shared.update_aesthetic_embeddings, lambda: {"choices": sorted(shared.aesthetic_embeddings.keys())}, "refresh_aesthetic_embeddings")
+
+            with gr.Row():
+                aesthetic_imgs_text = gr.Textbox(label='Aesthetic text for imgs',
+                                                 placeholder="This text is used to rotate the feature space of the imgs embs",
+                                                 value="")
+                aesthetic_slerp_angle = gr.Slider(label='Slerp angle', minimum=0, maximum=1, step=0.01,
+                                                  value=0.1)
+                aesthetic_text_negative = gr.Checkbox(label="Is negative text", value=False)
+
+    return aesthetic_weight, aesthetic_steps, aesthetic_lr, aesthetic_slerp, aesthetic_imgs, aesthetic_imgs_text, aesthetic_slerp_angle, aesthetic_text_negative
+
+
+aesthetic_clip_model = None
+
+
+def aesthetic_clip():
+    global aesthetic_clip_model
+
+    if aesthetic_clip_model is None or aesthetic_clip_model.name_or_path != shared.sd_model.cond_stage_model.wrapped.transformer.name_or_path:
+        aesthetic_clip_model = CLIPModel.from_pretrained(shared.sd_model.cond_stage_model.wrapped.transformer.name_or_path)
+        aesthetic_clip_model.cpu()
+
+    return aesthetic_clip_model
+
+
+def generate_imgs_embd(name, folder, batch_size):
+    model = aesthetic_clip().to(device)
+    processor = CLIPProcessor.from_pretrained(model.name_or_path)
+
+    with torch.no_grad():
+        embs = []
+        for paths in tqdm(iter_to_batched(get_all_images_in_folder(folder), batch_size),
+                          desc=f"Generating embeddings for {name}"):
+            if shared.state.interrupted:
+                break
+            inputs = processor(images=[Image.open(path) for path in paths], return_tensors="pt").to(device)
+            outputs = model.get_image_features(**inputs).cpu()
+            embs.append(torch.clone(outputs))
+            inputs.to("cpu")
+            del inputs, outputs
+
+        embs = torch.cat(embs, dim=0).mean(dim=0, keepdim=True)
+
+        # The generated embedding will be located here
+        path = str(Path(shared.cmd_opts.aesthetic_embeddings_dir) / f"{name}.pt")
+        torch.save(embs, path)
+
+        model.cpu()
+        del processor
+        del embs
+        gc.collect()
+        torch.cuda.empty_cache()
+        res = f"""
+        Done generating embedding for {name}!
+        Aesthetic embedding saved to {html.escape(path)}
+        """
+        shared.update_aesthetic_embeddings()
+        return gr.Dropdown.update(choices=sorted(shared.aesthetic_embeddings.keys()), label="Imgs embedding",
+                                  value="None"), \
+               gr.Dropdown.update(choices=sorted(shared.aesthetic_embeddings.keys()),
+                                  label="Imgs embedding",
+                                  value="None"), res, ""
+
+
+def slerp(low, high, val):
+    low_norm = low / torch.norm(low, dim=1, keepdim=True)
+    high_norm = high / torch.norm(high, dim=1, keepdim=True)
+    omega = torch.acos((low_norm * high_norm).sum(1))
+    so = torch.sin(omega)
+    res = (torch.sin((1.0 - val) * omega) / so).unsqueeze(1) * low + (torch.sin(val * omega) / so).unsqueeze(1) * high
+    return res
+
+
+class AestheticCLIP:
+    def __init__(self):
+        self.skip = False
+        self.aesthetic_steps = 0
+        self.aesthetic_weight = 0
+        self.aesthetic_lr = 0
+        self.slerp = False
+        self.aesthetic_text_negative = ""
+        self.aesthetic_slerp_angle = 0
+        self.aesthetic_imgs_text = ""
+
+        self.image_embs_name = None
+        self.image_embs = None
+        self.load_image_embs(None)
+
+    def set_aesthetic_params(self, p, aesthetic_lr=0, aesthetic_weight=0, aesthetic_steps=0, image_embs_name=None,
+                             aesthetic_slerp=True, aesthetic_imgs_text="",
+                             aesthetic_slerp_angle=0.15,
+                             aesthetic_text_negative=False):
+        self.aesthetic_imgs_text = aesthetic_imgs_text
+        self.aesthetic_slerp_angle = aesthetic_slerp_angle
+        self.aesthetic_text_negative = aesthetic_text_negative
+        self.slerp = aesthetic_slerp
+        self.aesthetic_lr = aesthetic_lr
+        self.aesthetic_weight = aesthetic_weight
+        self.aesthetic_steps = aesthetic_steps
+        self.load_image_embs(image_embs_name)
+
+        if self.image_embs_name is not None:
+            p.extra_generation_params.update({
+                "Aesthetic LR": aesthetic_lr,
+                "Aesthetic weight": aesthetic_weight,
+                "Aesthetic steps": aesthetic_steps,
+                "Aesthetic embedding": self.image_embs_name,
+                "Aesthetic slerp": aesthetic_slerp,
+                "Aesthetic text": aesthetic_imgs_text,
+                "Aesthetic text negative": aesthetic_text_negative,
+                "Aesthetic slerp angle": aesthetic_slerp_angle,
+            })
+
+    def set_skip(self, skip):
+        self.skip = skip
+
+    def load_image_embs(self, image_embs_name):
+        if image_embs_name is None or len(image_embs_name) == 0 or image_embs_name == "None":
+            image_embs_name = None
+            self.image_embs_name = None
+        if image_embs_name is not None and self.image_embs_name != image_embs_name:
+            self.image_embs_name = image_embs_name
+            self.image_embs = torch.load(shared.aesthetic_embeddings[self.image_embs_name], map_location=device)
+            self.image_embs /= self.image_embs.norm(dim=-1, keepdim=True)
+            self.image_embs.requires_grad_(False)
+
+    def __call__(self, z, remade_batch_tokens):
+        if not self.skip and self.aesthetic_steps != 0 and self.aesthetic_lr != 0 and self.aesthetic_weight != 0 and self.image_embs_name is not None:
+            tokenizer = shared.sd_model.cond_stage_model.tokenizer
+            if not opts.use_old_emphasis_implementation:
+                remade_batch_tokens = [
+                    [tokenizer.bos_token_id] + x[:75] + [tokenizer.eos_token_id] for x in
+                    remade_batch_tokens]
+
+            tokens = torch.asarray(remade_batch_tokens).to(device)
+
+            model = copy.deepcopy(aesthetic_clip()).to(device)
+            model.requires_grad_(True)
+            if self.aesthetic_imgs_text is not None and len(self.aesthetic_imgs_text) > 0:
+                text_embs_2 = model.get_text_features(
+                    **tokenizer([self.aesthetic_imgs_text], padding=True, return_tensors="pt").to(device))
+                if self.aesthetic_text_negative:
+                    text_embs_2 = self.image_embs - text_embs_2
+                    text_embs_2 /= text_embs_2.norm(dim=-1, keepdim=True)
+                img_embs = slerp(self.image_embs, text_embs_2, self.aesthetic_slerp_angle)
+            else:
+                img_embs = self.image_embs
+
+            with torch.enable_grad():
+
+                # We optimize the model to maximize the similarity
+                optimizer = optim.Adam(
+                    model.text_model.parameters(), lr=self.aesthetic_lr
+                )
+
+                for _ in trange(self.aesthetic_steps, desc="Aesthetic optimization"):
+                    text_embs = model.get_text_features(input_ids=tokens)
+                    text_embs = text_embs / text_embs.norm(dim=-1, keepdim=True)
+                    sim = text_embs @ img_embs.T
+                    loss = -sim
+                    optimizer.zero_grad()
+                    loss.mean().backward()
+                    optimizer.step()
+
+                zn = model.text_model(input_ids=tokens, output_hidden_states=-opts.CLIP_stop_at_last_layers)
+                if opts.CLIP_stop_at_last_layers > 1:
+                    zn = zn.hidden_states[-opts.CLIP_stop_at_last_layers]
+                    zn = model.text_model.final_layer_norm(zn)
+                else:
+                    zn = zn.last_hidden_state
+                model.cpu()
+                del model
+                gc.collect()
+                torch.cuda.empty_cache()
+            zn = torch.concat([zn[77 * i:77 * (i + 1)] for i in range(max(z.shape[1] // 77, 1))], 1)
+            if self.slerp:
+                z = slerp(z, zn, self.aesthetic_weight)
+            else:
+                z = z * (1 - self.aesthetic_weight) + zn * self.aesthetic_weight
+
+        return z