gradio_scribble.py

from share import *
import config

import cv2
import einops
import gradio as gr
import numpy as np
import torch
import random

from pytorch_lightning import seed_everything
from annotator.util import resize_image, HWC3
from annotator.hed import HEDdetector
from annotator.pidinet import PidiNetDetector
from annotator.util import nms
from cldm.model import create_model, load_state_dict
from cldm.ddim_hacked import DDIMSampler


preprocessor = None

model_name = 'control_v11p_sd15_scribble'
model = create_model(f'./models/{model_name}.yaml').cpu()
model.load_state_dict(load_state_dict('./models/v1-5-pruned.ckpt', location='cuda'), strict=False)
model.load_state_dict(load_state_dict(f'./models/{model_name}.pth', location='cuda'), strict=False)
model = model.cuda()
ddim_sampler = DDIMSampler(model)


def process(det, input_image, prompt, a_prompt, n_prompt, num_samples, image_resolution, detect_resolution, ddim_steps, guess_mode, strength, scale, seed, eta):
    global preprocessor

    if 'HED' in det:
        if not isinstance(preprocessor, HEDdetector):
            preprocessor = HEDdetector()

    if 'PIDI' in det:
        if not isinstance(preprocessor, PidiNetDetector):
            preprocessor = PidiNetDetector()

    with torch.no_grad():
        input_image = HWC3(input_image)

        if det == 'None':
            detected_map = input_image.copy()
        else:
            detected_map = preprocessor(resize_image(input_image, detect_resolution))
            detected_map = HWC3(detected_map)

        img = resize_image(input_image, image_resolution)
        H, W, C = img.shape

        detected_map = cv2.resize(detected_map, (W, H), interpolation=cv2.INTER_LINEAR)
        detected_map = nms(detected_map, 127, 3.0)
        detected_map = cv2.GaussianBlur(detected_map, (0, 0), 3.0)
        detected_map[detected_map > 4] = 255
        detected_map[detected_map < 255] = 0

        control = torch.from_numpy(detected_map.copy()).float().cuda() / 255.0
        control = torch.stack([control for _ in range(num_samples)], dim=0)
        control = einops.rearrange(control, 'b h w c -> b c h w').clone()

        if seed == -1:
            seed = random.randint(0, 65535)
        seed_everything(seed)

        if config.save_memory:
            model.low_vram_shift(is_diffusing=False)

        cond = {"c_concat": [control], "c_crossattn": [model.get_learned_conditioning([prompt + ', ' + a_prompt] * num_samples)]}
        un_cond = {"c_concat": None if guess_mode else [control], "c_crossattn": [model.get_learned_conditioning([n_prompt] * num_samples)]}
        shape = (4, H // 8, W // 8)

        if config.save_memory:
            model.low_vram_shift(is_diffusing=True)

        model.control_scales = [strength * (0.825 ** float(12 - i)) for i in range(13)] if guess_mode else ([strength] * 13)
        # Magic number. IDK why. Perhaps because 0.825**12<0.01 but 0.826**12>0.01

        samples, intermediates = ddim_sampler.sample(ddim_steps, num_samples,
                                                     shape, cond, verbose=False, eta=eta,
                                                     unconditional_guidance_scale=scale,
                                                     unconditional_conditioning=un_cond)

        if config.save_memory:
            model.low_vram_shift(is_diffusing=False)

        x_samples = model.decode_first_stage(samples)
        x_samples = (einops.rearrange(x_samples, 'b c h w -> b h w c') * 127.5 + 127.5).cpu().numpy().clip(0, 255).astype(np.uint8)

        results = [x_samples[i] for i in range(num_samples)]
    return [detected_map] + results


block = gr.Blocks().queue()
with block:
    with gr.Row():
        gr.Markdown("## Control Stable Diffusion with Synthesized Scribble")
    with gr.Row():
        with gr.Column():
            input_image = gr.Image(source='upload', type="numpy")
            prompt = gr.Textbox(label="Prompt")
            run_button = gr.Button(label="Run")
            num_samples = gr.Slider(label="Images", minimum=1, maximum=12, value=1, step=1)
            seed = gr.Slider(label="Seed", minimum=-1, maximum=2147483647, step=1, value=12345)
            det = gr.Radio(choices=["Scribble_HED", "Scribble_PIDI", "None"], type="value", value="Scribble_HED", label="Preprocessor")
            with gr.Accordion("Advanced options", open=False):
                image_resolution = gr.Slider(label="Image Resolution", minimum=256, maximum=768, value=512, step=64)
                strength = gr.Slider(label="Control Strength", minimum=0.0, maximum=2.0, value=1.0, step=0.01)
                guess_mode = gr.Checkbox(label='Guess Mode', value=False)
                detect_resolution = gr.Slider(label="Preprocessor Resolution", minimum=128, maximum=1024, value=512, step=1)
                ddim_steps = gr.Slider(label="Steps", minimum=1, maximum=100, value=20, step=1)
                scale = gr.Slider(label="Guidance Scale", minimum=0.1, maximum=30.0, value=9.0, step=0.1)
                eta = gr.Slider(label="DDIM ETA", minimum=0.0, maximum=1.0, value=1.0, step=0.01)
                a_prompt = gr.Textbox(label="Added Prompt", value='best quality')
                n_prompt = gr.Textbox(label="Negative Prompt", value='lowres, bad anatomy, bad hands, cropped, worst quality')
        with gr.Column():
            result_gallery = gr.Gallery(label='Output', show_label=False, elem_id="gallery").style(grid=2, height='auto')
    ips = [det, input_image, prompt, a_prompt, n_prompt, num_samples, image_resolution, detect_resolution, ddim_steps, guess_mode, strength, scale, seed, eta]
    run_button.click(fn=process, inputs=ips, outputs=[result_gallery])


block.launch(server_name='0.0.0.0')