app_novic.py

# NOVIC interface

# Imports
import sys
import pathlib
import subprocess
import PIL.Image
import torch

# Ensure access to NOVIC code
REPO_ROOT = pathlib.Path(__file__).parent.resolve()
NOVIC_DIR = REPO_ROOT / 'novic'
NOVIC_TEST = NOVIC_DIR / '__init__.py'
if not NOVIC_TEST.exists():
	print("Initialising git submodules as NOVIC code was not found yet...")
	subprocess.run(['git', 'submodule', 'update', '--init', '--recursive'], cwd=REPO_ROOT, check=True)
	if not NOVIC_TEST.exists():
		raise RuntimeError("Failed to find NOVIC code")
if str(NOVIC_DIR) not in sys.path:
	sys.path.insert(0, str(NOVIC_DIR))

# Import NOVIC inference
import infer  # noqa

# General inference setup
infer.utils.allow_tf32(enable=True)
DEVICE = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
MODELS: dict[str, infer.NOVICModel] = {}

# Retrieve a NOVIC model
def get_model(checkpoint: str) -> infer.NOVICModel:

	if (model := MODELS.get(checkpoint, None)) is not None:
		return model

	model = infer.NOVICModel(
		checkpoint=checkpoint,
		gencfg='beam_k10_vnone_gp_t1_a0',
		guide_targets=None,
		torch_compile=False,
		batch_size=1,
		device=DEVICE,
		cfg_flat_override=None,
		embedder_override=None,
	)

	model.__enter__()
	MODELS[checkpoint] = model
	return model

# Classify an image
def classify_image(image: PIL.Image.Image, checkpoint: str) -> dict[str, float]:
	model = get_model(checkpoint=checkpoint)
	output = model.classify_image(image=image)
	return dict(zip(output.preds[0], output.probs[0], strict=True))
# EOF