From d3e6e367f5d948be9200a6cd42c828aa20c1cf36 Mon Sep 17 00:00:00 2001 From: ModeratePrawn Date: Thu, 1 Sep 2022 08:55:20 -0400 Subject: [PATCH] Delete img2img.py Wong folder --- img2img.py | 294 ----------------------------------------------------- 1 file changed, 294 deletions(-) delete mode 100644 img2img.py diff --git a/img2img.py b/img2img.py deleted file mode 100644 index 285fef7..0000000 --- a/img2img.py +++ /dev/null @@ -1,294 +0,0 @@ -"""make variations of input image""" - -import argparse, os, sys, glob -import PIL -import torch -import numpy as np -from omegaconf import OmegaConf -from PIL import Image -from tqdm import tqdm, trange -from itertools import islice -from einops import rearrange, repeat -from torchvision.utils import make_grid -from torch import autocast -from contextlib import nullcontext -import time -from pytorch_lightning import seed_everything - -from ldm.util import instantiate_from_config -from ldm.models.diffusion.ddim import DDIMSampler -from ldm.models.diffusion.plms import PLMSSampler - - -def chunk(it, size): - it = iter(it) - return iter(lambda: tuple(islice(it, size)), ()) - - -def load_model_from_config(config, ckpt, verbose=False): - print(f"Loading model from {ckpt}") - pl_sd = torch.load(ckpt, map_location="cpu") - if "global_step" in pl_sd: - print(f"Global Step: {pl_sd['global_step']}") - sd = pl_sd["state_dict"] - model = instantiate_from_config(config.model) - m, u = model.load_state_dict(sd, strict=False) - if len(m) > 0 and verbose: - print("missing keys:") - print(m) - if len(u) > 0 and verbose: - print("unexpected keys:") - print(u) - - if torch.cuda.is_available(): - model.cuda() - model.eval() - return model - - -def load_img(path): - image = Image.open(path).convert("RGB") - w, h = image.size - print(f"loaded input image of size ({w}, {h}) from {path}") - w, h = map(lambda x: x - x % 32, (w, h)) # resize to integer multiple of 32 - image = image.resize((w, h), resample=PIL.Image.LANCZOS) - image = np.array(image).astype(np.float32) / 255.0 - image = image[None].transpose(0, 3, 1, 2) - image = torch.from_numpy(image) - return 2.*image - 1. - - -def main(): - parser = argparse.ArgumentParser() - - parser.add_argument( - "--prompt", - type=str, - nargs="?", - default="a painting of a virus monster playing guitar", - help="the prompt to render" - ) - - parser.add_argument( - "--init-img", - type=str, - nargs="?", - help="path to the input image" - ) - - parser.add_argument( - "--outdir", - type=str, - nargs="?", - help="dir to write results to", - default="outputs/img2img-samples" - ) - - parser.add_argument( - "--skip_grid", - action='store_true', - help="do not save a grid, only individual samples. Helpful when evaluating lots of samples", - ) - - parser.add_argument( - "--skip_save", - action='store_true', - help="do not save indiviual samples. For speed measurements.", - ) - - parser.add_argument( - "--ddim_steps", - type=int, - default=50, - help="number of ddim sampling steps", - ) - - parser.add_argument( - "--plms", - action='store_true', - help="use plms sampling", - ) - parser.add_argument( - "--fixed_code", - action='store_true', - help="if enabled, uses the same starting code across all samples ", - ) - - parser.add_argument( - "--ddim_eta", - type=float, - default=0.0, - help="ddim eta (eta=0.0 corresponds to deterministic sampling", - ) - parser.add_argument( - "--n_iter", - type=int, - default=1, - help="sample this often", - ) - parser.add_argument( - "--C", - type=int, - default=4, - help="latent channels", - ) - parser.add_argument( - "--f", - type=int, - default=8, - help="downsampling factor, most often 8 or 16", - ) - parser.add_argument( - "--n_samples", - type=int, - default=2, - help="how many samples to produce for each given prompt. A.k.a batch size", - ) - parser.add_argument( - "--n_rows", - type=int, - default=0, - help="rows in the grid (default: n_samples)", - ) - parser.add_argument( - "--scale", - type=float, - default=5.0, - help="unconditional guidance scale: eps = eps(x, empty) + scale * (eps(x, cond) - eps(x, empty))", - ) - - parser.add_argument( - "--strength", - type=float, - default=0.75, - help="strength for noising/unnoising. 1.0 corresponds to full destruction of information in init image", - ) - parser.add_argument( - "--from-file", - type=str, - help="if specified, load prompts from this file", - ) - parser.add_argument( - "--config", - type=str, - default="configs/stable-diffusion/v1-inference.yaml", - help="path to config which constructs model", - ) - parser.add_argument( - "--ckpt", - type=str, - default="models/ldm/stable-diffusion-v1/model.ckpt", - help="path to checkpoint of model", - ) - parser.add_argument( - "--seed", - type=int, - default=42, - help="the seed (for reproducible sampling)", - ) - parser.add_argument( - "--precision", - type=str, - help="evaluate at this precision", - choices=["full", "autocast"], - default="autocast" - ) - - opt = parser.parse_args() - seed_everything(opt.seed) - - config = OmegaConf.load(f"{opt.config}") - model = load_model_from_config(config, f"{opt.ckpt}") - - device = torch.device("cuda") if torch.cuda.is_available() else torch.device("cpu") - model = model.to(device) - - if opt.plms: - raise NotImplementedError("PLMS sampler not (yet) supported") - sampler = PLMSSampler(model) - else: - sampler = DDIMSampler(model) - - os.makedirs(opt.outdir, exist_ok=True) - outpath = opt.outdir - - batch_size = opt.n_samples - n_rows = opt.n_rows if opt.n_rows > 0 else batch_size - if not opt.from_file: - prompt = opt.prompt - assert prompt is not None - data = [batch_size * [prompt]] - - else: - print(f"reading prompts from {opt.from_file}") - with open(opt.from_file, "r") as f: - data = f.read().splitlines() - data = list(chunk(data, batch_size)) - - sample_path = os.path.join(outpath, "samples") - os.makedirs(sample_path, exist_ok=True) - base_count = len(os.listdir(sample_path)) - grid_count = len(os.listdir(outpath)) - 1 - - assert os.path.isfile(opt.init_img) - init_image = load_img(opt.init_img).to(device) - init_image = repeat(init_image, '1 ... -> b ...', b=batch_size) - init_latent = model.get_first_stage_encoding(model.encode_first_stage(init_image)) # move to latent space - - sampler.make_schedule(ddim_num_steps=opt.ddim_steps, ddim_eta=opt.ddim_eta, verbose=False) - - assert 0. <= opt.strength <= 1., 'can only work with strength in [0.0, 1.0]' - t_enc = int(opt.strength * opt.ddim_steps) - print(f"target t_enc is {t_enc} steps") - - precision_scope = autocast if opt.precision == "autocast" else nullcontext - with torch.no_grad(): - with precision_scope("cuda"): - with model.ema_scope(): - tic = time.time() - all_samples = list() - for n in trange(opt.n_iter, desc="Sampling"): - for prompts in tqdm(data, desc="data"): - uc = None - if opt.scale != 1.0: - uc = model.get_learned_conditioning(batch_size * [""]) - if isinstance(prompts, tuple): - prompts = list(prompts) - c = model.get_learned_conditioning(prompts) - - # encode (scaled latent) - z_enc = sampler.stochastic_encode(init_latent, torch.tensor([t_enc]*batch_size).to(device)) - # decode it - samples = sampler.decode(z_enc, c, t_enc, unconditional_guidance_scale=opt.scale, - unconditional_conditioning=uc,) - - x_samples = model.decode_first_stage(samples) - x_samples = torch.clamp((x_samples + 1.0) / 2.0, min=0.0, max=1.0) - - if not opt.skip_save: - for x_sample in x_samples: - x_sample = 255. * rearrange(x_sample.cpu().numpy(), 'c h w -> h w c') - Image.fromarray(x_sample.astype(np.uint8)).save( - os.path.join(sample_path, f"{base_count:05}.png")) - base_count += 1 - all_samples.append(x_samples) - - if not opt.skip_grid: - # additionally, save as grid - grid = torch.stack(all_samples, 0) - grid = rearrange(grid, 'n b c h w -> (n b) c h w') - grid = make_grid(grid, nrow=n_rows) - - # to image - grid = 255. * rearrange(grid, 'c h w -> h w c').cpu().numpy() - Image.fromarray(grid.astype(np.uint8)).save(os.path.join(outpath, f'grid-{grid_count:04}.png')) - grid_count += 1 - - toc = time.time() - - print(f"Your samples are ready and waiting for you here: \n{outpath} \n" - f" \nEnjoy.") - - -if __name__ == "__main__": - main()