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| from colordescriptor import ColorDescriptor | |
| from CLIP import CLIPImageEncoder | |
| from LBP import LBPImageEncoder | |
| import gradio as gr | |
| import os | |
| import cv2 | |
| import numpy as np | |
| from datasets import * | |
| dataset = load_dataset("huggan/CelebA-faces") | |
| candidate_subset = dataset["train"].select(range(1000)) # This is a small CBIR app! :D | |
| def index_dataset(dataset): | |
| # This function might need to be split up, to reduce start-up time of app | |
| # It could also use batches to increase speed | |
| # If indexes are saved in files, this is all not really necessary | |
| ## Color Embeddings | |
| cd = ColorDescriptor((8, 12, 3)) | |
| dataset_with_embeddings = dataset.map(lambda row: {'color_embeddings': cd.describe(row["image"])}) # we assume that dataset has a column 'image' | |
| ## CLIP Embeddings | |
| clip_model = CLIPImageEncoder() | |
| dataset_with_embeddings = dataset_with_embeddings.map(clip_model.encode_images, batched=True, batch_size=16) | |
| ## LBP Embeddings | |
| lbp_model = LBPImageEncoder(8,2) | |
| dataset_with_embeddings = dataset_with_embeddings.map(lambda row: {'lbp_embeddings': lbp_model.preprocess_img(row["image"])}) | |
| # Add index | |
| dataset_with_embeddings.add_faiss_index(column='color_embeddings') | |
| dataset_with_embeddings.save_faiss_index('color_embeddings', 'color_index.faiss') | |
| dataset_with_embeddings.add_faiss_index(column='clip_embeddings') | |
| dataset_with_embeddings.add_faiss_index(column='lbp_embeddings') | |
| dataset_with_embeddings.save_faiss_index('clip_embeddings', 'clip_index.faiss') | |
| print(dataset_with_embeddings) | |
| return dataset_with_embeddings | |
| def check_index(ds): | |
| index_path = "my_index.faiss" | |
| if os.path.isfile('color_index.faiss') and os.path.isfile('clip_index.faiss'): | |
| ds.load_faiss_index('color_embeddings', 'color_index.faiss') | |
| return ds.load_faiss_index('clip_embeddings', 'clip_index.faiss') | |
| else: | |
| return index_dataset(ds) | |
| dataset_with_embeddings = check_index(candidate_subset) | |
| # Main function, to find similar images | |
| # TODO: allow different descriptor/embedding functions | |
| # TODO: implement different distance measures | |
| def get_neighbors(query_image, selected_descriptor, top_k=5): | |
| """Returns the top k nearest examples to the query image. | |
| Args: | |
| query_image: A PIL object representing the query image. | |
| top_k: An integer representing the number of nearest examples to return. | |
| Returns: | |
| A list of the top_k most similar images as PIL objects. | |
| """ | |
| if "Color Descriptor" in selected_descriptor: | |
| cd = ColorDescriptor((8, 12, 3)) | |
| qi_embedding = cd.describe(query_image) | |
| qi_np = np.array(qi_embedding) | |
| scores, retrieved_examples = dataset_with_embeddings.get_nearest_examples( | |
| 'color_embeddings', qi_np, k=top_k) | |
| images = retrieved_examples['image'] #retrieved images is a dict, with images and embeddings | |
| return images | |
| if "CLIP" in selected_descriptor: | |
| clip_model = CLIPImageEncoder() | |
| qi_embedding = clip_model.encode_image(query_image) | |
| scores, retrieved_examples = dataset_with_embeddings.get_nearest_examples( | |
| 'clip_embeddings', qi_embedding, k=top_k) | |
| images = retrieved_examples['image'] | |
| return images | |
| if "LBP" in selected_descriptor: | |
| lbp_model = LBPImageEncoder(8,2) | |
| qi_embedding = lbp_model.preprocess_img(query_image) | |
| scores, retrieved_examples = dataset_with_embeddings.get_nearest_examples( | |
| 'lbp_embeddings', qi_embedding, k=top_k) | |
| images = retrieved_examples['image'] | |
| return images | |
| else: | |
| print("This descriptor is not yet supported :(") | |
| return [] | |
| # Define the Gradio Interface | |
| with gr.Blocks() as demo: | |
| image_input = gr.Image(type="pil", label="Please upload an image") | |
| checkboxes_descr = gr.CheckboxGroup(["Color Descriptor", "LBP", "CLIP"], label="Please choose an descriptor") | |
| btn = gr.Button(value="Submit") | |
| gallery_output = gr.Gallery() | |
| btn.click(get_neighbors, inputs=[image_input, checkboxes_descr], outputs=[gallery_output]) | |
| btn_index = gr.Button(value="Re-index Dataset") | |
| btn_index.click(index_dataset) | |
| if __name__ == "__main__": | |
| demo.launch() | |