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README.md
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Example to use pretrained checkpoints.
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Example to use pretrained checkpoints.
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from huggingface_hub import hf_hub_download
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import torch
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import clip
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import torch.nn.functional as F
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import numpy as np
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import cv2
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import torchvision.transforms as transforms
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def generate_event_image(frames, threshold=10):
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frames = np.array(frames)
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num_frames, height, width, _ = frames.shape
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event_images = []
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for i in range(1, num_frames):
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diff = cv2.absdiff(frames[i], frames[i-1])
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gray_diff = cv2.cvtColor(diff, cv2.COLOR_RGB2GRAY)
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_, event_image = cv2.threshold(gray_diff, threshold, 255, cv2.THRESH_BINARY)
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event_images.append(event_image)
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return torch.tensor(event_images).sum(dim=0)
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ckpt_path = hf_hub_download(
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repo_id="Eavn/event-clip",
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filename="vitb.pt", # or vitl.pt for pretraining checkpoints
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repo_type="model"
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)
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model, preprocess = clip.load("ViT-B/32")
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# model, preprocess = clip.load("ViT-L/14")
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state_dict = torch.load(ckpt_path)["checkpoint"]
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new_state_dict = {}
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for key in state_dict.keys():
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if 'encoder_k' in key:
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new_state_dict[key.replace('encoder_k.', '')] = state_dict[key]
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model.load_state_dict(new_state_dict)
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transform = transforms.Compose([
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transforms.Resize((224, 224)),
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])
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stack_size = 16
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threshold = 10
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clamp = 10
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text = 'Put the Text Here'
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text = clip.tokenize([text]).cuda()
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images = (np.random.rand(32, 224, 224, 3) * 255).astype(np.uint8)
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event = generate_event_image(
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images[:stack_size],
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threshold=threshold
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)
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if clamp > 0:
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event = torch.clamp(event, min=0, max=clamp)
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event = event / event.max()
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event = torch.stack([event, event, event])
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event = transform(event)
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event = event.cuda().unsqueeze(0)
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logits_per_event, _ = model(event, text)
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