This model was released on 2021-02-26 and added to Hugging Face Transformers on 2021-05-12.

CLIP

CLIP is a is a multimodal vision and language model motivated by overcoming the fixed number of object categories when training a computer vision model. CLIP learns about images directly from raw text by jointly training on 400M (image, text) pairs. Pretraining on this scale enables zero-shot transfer to downstream tasks. CLIP uses an image encoder and text encoder to get visual features and text features. Both features are projected to a latent space with the same number of dimensions and their dot product gives a similarity score.

You can find all the original CLIP checkpoints under the OpenAI organization.

Tip

Click on the CLIP models in the right sidebar for more examples of how to apply CLIP to different image and language tasks.

The example below demonstrates how to calculate similarity scores between multiple text descriptions and an image with [Pipeline] or the [AutoModel] class.

import torch
from transformers import pipeline

clip = pipeline(
   task="zero-shot-image-classification",
   model="openai/clip-vit-base-patch32",
   dtype=torch.bfloat16,
   device=0
)
labels = ["a photo of a cat", "a photo of a dog", "a photo of a car"]
clip("http://images.cocodataset.org/val2017/000000039769.jpg", candidate_labels=labels)

import requests
import torch
from PIL import Image
from transformers import AutoProcessor, AutoModel

model = AutoModel.from_pretrained("openai/clip-vit-base-patch32", dtype=torch.bfloat16, attn_implementation="sdpa")
processor = AutoProcessor.from_pretrained("openai/clip-vit-base-patch32")

url = "http://images.cocodataset.org/val2017/000000039769.jpg"
image = Image.open(requests.get(url, stream=True).raw)
labels = ["a photo of a cat", "a photo of a dog", "a photo of a car"]

inputs = processor(text=labels, images=image, return_tensors="pt", padding=True)

outputs = model(**inputs)
logits_per_image = outputs.logits_per_image
probs = logits_per_image.softmax(dim=1)
most_likely_idx = probs.argmax(dim=1).item()
most_likely_label = labels[most_likely_idx]
print(f"Most likely label: {most_likely_label} with probability: {probs[0][most_likely_idx].item():.3f}")

Notes

Use [CLIPImageProcessor] to resize (or rescale) and normalizes images for the model.

CLIPConfig

[[autodoc]] CLIPConfig

CLIPTextConfig

[[autodoc]] CLIPTextConfig

CLIPVisionConfig

[[autodoc]] CLIPVisionConfig

CLIPTokenizer

[[autodoc]] CLIPTokenizer - build_inputs_with_special_tokens - get_special_tokens_mask - create_token_type_ids_from_sequences - save_vocabulary

CLIPTokenizerFast

[[autodoc]] CLIPTokenizerFast

CLIPImageProcessor

[[autodoc]] CLIPImageProcessor - preprocess

CLIPImageProcessorFast

[[autodoc]] CLIPImageProcessorFast - preprocess

CLIPProcessor

[[autodoc]] CLIPProcessor

CLIPModel

[[autodoc]] CLIPModel - forward - get_text_features - get_image_features

CLIPTextModel

[[autodoc]] CLIPTextModel - forward

CLIPTextModelWithProjection

[[autodoc]] CLIPTextModelWithProjection - forward

CLIPVisionModelWithProjection

[[autodoc]] CLIPVisionModelWithProjection - forward

CLIPVisionModel

[[autodoc]] CLIPVisionModel - forward

CLIPForImageClassification

[[autodoc]] CLIPForImageClassification - forward

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