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import streamlit as st |
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import numpy as np |
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from PIL import Image |
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from transformers import CLIPProcessor, CLIPModel, YolosImageProcessor, YolosForObjectDetection |
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import torch |
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st.title("CLIP & CROP") |
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st.markdown("**Extract sections of images from your image by using OpenAI's CLIP and Facebooks Detr implemented on HuggingFace Transformers, if the similarity score is not so much, then please consider the prediction to be void.**") |
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with st.spinner("Models are loading"): |
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feature_extractor = YolosImageProcessor.from_pretrained("hustvl/yolos-tiny") |
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dmodel = YolosForObjectDetection.from_pretrained('hustvl/yolos-tiny') |
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model = CLIPModel.from_pretrained("openai/clip-vit-base-patch16") |
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processor = CLIPProcessor.from_pretrained("openai/clip-vit-base-patch16") |
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IMAGE_INPUT = st.file_uploader(type="pil", label="Input image") |
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TEXT_INPUT = st.text_input(label="Description for section to extracted") |
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NUMBER_INPUT = st.number_input(value=0.96, label="Threshold percentage score") |
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SUBMIT_BUTTON = st.button("SUBMIT") |
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def extract_image(image, text, prob, num=1): |
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inputs = feature_extractor(images=image, return_tensors="pt") |
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outputs = dmodel(**inputs) |
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logits = outputs.logits |
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bboxes = outputs.pred_boxes |
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probas = outputs.logits.softmax(-1)[0, :, :-1] |
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keep = probas.max(-1).values > prob |
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outs = feature_extractor.post_process(outputs, torch.tensor(image.size[::-1]).unsqueeze(0)) |
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bboxes_scaled = outs[0]['boxes'][keep].detach().numpy() |
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labels = outs[0]['labels'][keep].detach().numpy() |
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scores = outs[0]['scores'][keep].detach().numpy() |
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images_list = [] |
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for i,j in enumerate(bboxes_scaled): |
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xmin = int(j[0]) |
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ymin = int(j[1]) |
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xmax = int(j[2]) |
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ymax = int(j[3]) |
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im_arr = np.array(image) |
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roi = im_arr[ymin:ymax, xmin:xmax] |
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roi_im = Image.fromarray(roi) |
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images_list.append(roi_im) |
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inpu = processor(text = [text], images=images_list , return_tensors="pt", padding=True) |
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output = model(**inpu) |
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logits_per_image = output.logits_per_text |
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probs = logits_per_image.softmax(-1) |
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l_idx = np.argsort(probs[-1].detach().numpy())[::-1][0:num] |
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final_ims = [] |
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for i,j in enumerate(images_list): |
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json_dict = {} |
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if i in l_idx: |
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json_dict['image'] = images_list[i] |
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json_dict['score'] = probs[-1].detach().numpy()[i] |
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final_ims.append(json_dict) |
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fi = sorted(final_ims, key=lambda item: item.get("score"), reverse=True) |
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return fi[0]['image'], fi[0]['score'] |
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if SUBMIT_BUTTON: |
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imageOutput, scoreOutput = extract(IMAGE_INPUT, TEXT_INPUT, NUMBER_INPUT) |
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st.image(imageOutput, caption="Cropped Image") |
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st.markdown("*Confidence Score:*") |
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st.success(scoreOutput) |
