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# AI-Powered Image Restoration and Enhancement Tool
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## Project Description
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This project aims to develop an **AI-Powered Image Restoration Tool** that revitalizes low-quality historical photos by upscaling, denoising, and adding realistic color. Using advanced deep learning techniques, it transforms degraded images into vibrant, high-quality visuals while preserving their historical context. This tool is perfect for heritage conservation, family archiving, and historical documentation.
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## Tech Stack
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- **Programming Language**: Python
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- **Libraries**:
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- OpenCV: For image processing tasks
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- Pillow: For handling image files
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- PyTorch: For implementing deep learning models
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- torchvision: For image transformations and model utilities
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- **Models**:
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- SRCNN (Super-Resolution Convolutional Neural Network): For image upscaling
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- DnCNN: For image denoising
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- Pre-trained colorization models (e.g., U-Net): For adding color to grayscale images
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## Methodology
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- **Advanced Image Processing Techniques**: Utilizes state-of-the-art methods like Non-Local Means denoising and deep learning models for image super-resolution, denoising, and colorization.
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- **Super-Resolution**: Enhances image clarity and resolution using models like SRCNN, providing high-resolution outputs from low-quality images.
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- **Denoising**: Removes unwanted noise with Non-Local Means or advanced denoising networks, preserving image details and texture.
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- **Colorization**: Adds vibrant colors to grayscale images through deep learning techniques, making them visually appealing and realistic.
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- **User-Friendly and Robust**: Includes comprehensive error handling, ensuring smooth processing and clear feedback for image handling issues.
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- **Before-and-After Comparison**: Stacks input and output images for easy visualization of restoration and enhancement effects.
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This project is ideal for applications in digital media restoration, enhancing low-quality images, and creating compelling visual content from historical or degraded images.
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import torch
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import cv2
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import numpy as np
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from torchvision.transforms import ToTensor, ToPILImage
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from torchvision import transforms
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from PIL import Image
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# Load a pre-trained SRCNN model (for demo purposes, use a simple model or load a pre-trained one)
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class SRCNN(torch.nn.Module):
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def __init__(self):
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super(SRCNN, self).__init__()
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self.conv1 = torch.nn.Conv2d(1, 64, kernel_size=9, padding=4)
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self.conv2 = torch.nn.Conv2d(64, 32, kernel_size=5, padding=2)
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self.conv3 = torch.nn.Conv2d(32, 1, kernel_size=5, padding=2)
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def forward(self, x):
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x = torch.nn.functional.relu(self.conv1(x))
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x = torch.nn.functional.relu(self.conv2(x))
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x = self.conv3(x)
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return x
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# Initialize the model and load weights if available
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model = SRCNN()
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model.load_state_dict(torch.load('srcnn_pretrained.pth', map_location='cpu'))
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model.eval()
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def super_resolve_image(img_path):
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image = cv2.imread(img_path, cv2.IMREAD_GRAYSCALE)
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image = cv2.resize(image, (image.shape[1] * 2, image.shape[0] * 2)) # Upscale by factor 2
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image = ToTensor()(image).unsqueeze(0)
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with torch.no_grad():
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output = model(image)
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output_image = output.squeeze().clamp(0, 1).cpu()
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output_image = ToPILImage()(output_image)
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output_image.save("super_resolved_image.jpg")
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output_image.show()
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def denoise_image(img_path):
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image = cv2.imread(img_path)
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denoised_image = cv2.fastNlMeansDenoisingColored(image, None, 10, 10, 7, 21)
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cv2.imwrite("denoised_image.jpg", denoised_image)
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cv2.imshow("Denoised Image", denoised_image)
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cv2.waitKey(0)
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cv2.destroyAllWindows()
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class ColorizationModel(torch.nn.Module):
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# Define a simple U-Net or load pre-trained weights from a colorization model here
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pass
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def colorize_image(img_path):
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image = Image.open(img_path).convert("L") # Convert to grayscale
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image = transforms.ToTensor()(image).unsqueeze(0)
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model = ColorizationModel()
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model.load_state_dict(torch.load("colorization_model.pth", map_location="cpu"))
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model.eval()
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with torch.no_grad():
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colorized = model(image)
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# Convert colorized image back to an RGB format for saving and display
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colorized_image = colorized.squeeze(0).permute(1, 2, 0).numpy()
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colorized_image = np.clip(colorized_image * 255, 0, 255).astype("uint8")
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colorized_image = Image.fromarray(colorized_image)
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colorized_image.save("colorized_image.jpg")
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colorized_image.show()
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def process_image(img_path):
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print("Starting Super-Resolution...")
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super_resolve_image(img_path)
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print("Super-Resolution Completed.")
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print("Starting Denoising...")
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denoise_image("super_resolved_image.jpg")
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print("Denoising Completed.")
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print("Starting Colorization...")
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colorize_image("denoised_image.jpg")
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print("Colorization Completed.")
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process_image("input_image.jpg")
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