Spaces:
Running
Running
File size: 2,184 Bytes
7369efb 88974f6 7369efb c5ad46a 7369efb c5ad46a 7369efb c5ad46a 7369efb |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 |
import os
import natsort
from tqdm import tqdm
import torch
from jax import numpy as jnp
from PIL import Image as PilImage
class CustomDataSet(torch.utils.data.Dataset):
def __init__(self, main_dir, transform):
self.main_dir = main_dir
self.transform = transform
all_imgs = os.listdir(main_dir)
self.total_imgs = natsort.natsorted(all_imgs)
def __len__(self):
return len(self.total_imgs)
def get_image_name(self, idx):
return self.total_imgs[idx]
def __getitem__(self, idx):
img_loc = os.path.join(self.main_dir, self.total_imgs[idx])
image = PilImage.open(img_loc).convert("RGB")
tensor_image = self.transform(image)
return tensor_image
def text_encoder(text, model, tokenizer):
inputs = tokenizer(
[text],
max_length=96,
truncation=True,
padding="max_length",
return_tensors="np",
)
embedding = model.get_text_features(inputs["input_ids"], inputs["attention_mask"])[
0
]
embedding /= jnp.linalg.norm(embedding)
return jnp.expand_dims(embedding, axis=0)
def precompute_image_features(model, loader):
image_features = []
for i, (images) in enumerate(tqdm(loader)):
images = images.permute(0, 2, 3, 1).numpy()
features = model.get_image_features(images,)
features /= jnp.linalg.norm(features, axis=-1, keepdims=True)
image_features.extend(features)
return jnp.array(image_features)
def find_image(text_query, model, dataset, tokenizer, image_features, n, dataset_name):
zeroshot_weights = text_encoder(text_query, model, tokenizer)
zeroshot_weights /= jnp.linalg.norm(zeroshot_weights)
distances = jnp.dot(image_features, zeroshot_weights.reshape(-1, 1))
file_paths = []
for i in range(1, n + 1):
idx = jnp.argsort(distances, axis=0)[-i, 0]
if dataset_name == "Unsplash":
file_paths.append("photos/" + dataset.get_image_name(idx))
elif dataset_name == "CC":
file_paths.append(dataset[idx])
else:
raise ValueError(f"{dataset_name} not supported here")
return file_paths
|