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import gradio as gr |
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import numpy as np |
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import torch |
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from PIL import Image, ImageDraw |
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from transformers import AutoImageProcessor, AutoModelForObjectDetection |
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description = """ |
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## This interface is made with 🤗 Gradio. |
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Simply upload an image of any person wearning/not-wearing helmet. |
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""" |
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image_processor = AutoImageProcessor.from_pretrained( |
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"devonho/detr-resnet-50_finetuned_cppe5" |
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) |
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model = AutoModelForObjectDetection.from_pretrained( |
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"devonho/detr-resnet-50_finetuned_cppe5" |
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) |
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image_in = gr.components.Image() |
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image_out = gr.components.Image() |
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def model_inference(img): |
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with torch.no_grad(): |
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inputs = image_processor(images=img, return_tensors="pt") |
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outputs = model(**inputs) |
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target_sizes = torch.tensor([img.size[::-1]]) |
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results = image_processor.post_process_object_detection( |
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outputs, threshold=0.5, target_sizes=target_sizes |
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)[0] |
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return results |
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def plot_results(image): |
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image = Image.fromarray(np.uint8(image)) |
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results = model_inference(img=image) |
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draw = ImageDraw.Draw(image) |
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for score, label, box in zip( |
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results["scores"], results["labels"], results["boxes"] |
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): |
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score = score.item() |
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box = [round(i, 2) for i in box.tolist()] |
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x, y, x2, y2 = tuple(box) |
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draw.rectangle((x, y, x2, y2), outline="red", width=1) |
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draw.text((x, y), model.config.id2label[label.item()], fill="white") |
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draw.text((x+0.5, y-0.5), text=str(score), fill='green' if score > 0.7 else 'red') |
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return image |
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Iface = gr.Interface( |
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fn=plot_results, |
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inputs=[image_in], |
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outputs=image_out, |
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title="Object Detection Using Fine-Tuned Vision Transformers", |
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description=description, |
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).launch() |
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