test_on_image.py

import os

import jax
import torch
from torchvision.io import ImageReadMode, read_image
from transformers import AutoTokenizer

from modeling_hybrid_clip import FlaxHybridCLIP
from run_hybrid_clip import Transform


def prepare_image(image_path, model):
    image = read_image(image_path, mode=ImageReadMode.RGB)
    preprocess = Transform(model.config.vision_config.image_size)
    preprocess = torch.jit.script(preprocess)
    preprocessed_image = preprocess(image)
    pixel_values = torch.stack([preprocessed_image]).permute(0, 2, 3, 1).numpy()
    return pixel_values


def prepare_text(text, tokenizer):
    return tokenizer(text, return_tensors="np")


def run_inference(image_path, text, model, tokenizer):
    pixel_values = prepare_image(image_path, model)
    input_text = prepare_text(text, tokenizer)
    model_output = model(
        input_text["input_ids"],
        pixel_values,
        attention_mask=input_text["attention_mask"],
        train=False,
        return_dict=True,
    )
    logits = model_output["logits_per_image"]
    score = jax.nn.sigmoid(logits)[0][0]
    return score


if __name__ == "__main__":
    model = FlaxHybridCLIP.from_pretrained("./")
    tokenizer = AutoTokenizer.from_pretrained(
        "bertin-project/bertin-roberta-base-spanish"
    )

    image_path = f"/home/{os.environ['USER']}/data/wit_scale_converted/Santuar.jpg"
    text = "Fachada del Santuario"

    print(run_inference(image_path, text, model, tokenizer))