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2 results for “semantic diffusion model”
Efficient Semantic Diffusion Architectures for Model Training on Synthetic Echocardiograms Dataset
<p>This is the official data repository for the paper: "Efficient Semantic Diffusion Architectures for Model Training on Synthetic Echocardiograms", available at:<a href="https://www.arxiv.org/abs/2409.19371"> https://www.arxiv.org/abs/2409.19371</a>. The corresponding code is available at: <a href="https://github.com/david-stojanovski/EDMLX">https://github.com/david-stojanovski/echo_from_noise</a></p> <p> </p> <p>The synthetic data is produced using a variety of generative architectures, including the <strong>Elucidating Diffusion Model (EDM), Variance Exploding (VE), Variance Preserving (VP)</strong>, and our novel models, <strong>EDM-L64</strong> and <strong>EDM-L128</strong>, which employ <strong>latent diffusion</strong> strategies to significantly reduce computational cost. By incorporating <strong>spatially adaptive normalization (SPADE) blocks</strong> and <strong>Γ-distribution-based Variational Autoencoders (Γ-VAE)</strong>, these datasets ensure that the generated images preserve the essential semantic features required for training deep learning models.</p> <p> </p> <p>All pretrained classification and segmentation models can be found within the <strong>trained_models </strong>file.</p> <p>All generated images can be found within the <strong>generated_data </strong>file. Included is the <strong>CAMUS</strong> and original <strong>Semantic Diffusion Model (SDM) </strong>data, as well as a folder labelled <strong>easy_inference</strong> designed to contain all relevant labelmaps in a convenient folder for generating replicas of the dataset (detailed at codebase).</p>
Echo from noise: synthetically generated cardiac ultrasound data using semantic diffusion models
<p>This is the data repository for the paper: "Echo from noise: synthetic ultrasound image generation using diffusion models for real image segmentation", available at: https://arxiv.org/abs/2305.05424. The corresponding code is available at: https://github.com/david-stojanovski/echo_from_noise</p> <p> </p> <p>This is the first work to utilize Denoising Diffusion Probabilistic Models (DDPMs) for generating medical images using semantic label maps as a source image for conditioning the generated image.</p> <p>Each of the 400+50 CAMUS patients contributes with 4 labelled frames (ED and ES for 2 chamber and 4 chamber), totalling 1800 initial semantic maps, to which we added the sector label. These semantic maps then had five random deformations applied (a combination of random affine and elastic deformation) to produce, 9000 transformed semantic maps (8000 for training and 1000 for validation). </p> <p>Affine transformation ranges for rotation degrees, translate, scale and shear were: (-5, 5), (0, 0.05), (0.8, 1.05) and 5 respectively. This was implemented using the torchvision python package. Elastic deformation was implemented using the TorchIO package. The settings for number of control points and max displacement were (10, 10, 4) and (0, 30, 30) respectively.</p> <p>Using these 9000 semantic maps as input to the generative models, we produced 9000 synthetic ultrasound images.</p> <p>Each echo view folder contains 3 folders:</p> <p>1) annotations: augmented labels, with no sector label and no clipping due to sector</p> <p>2) images: semantic diffusion model inferenced images</p> <p>3) sector_annotations: label maps which contain ultrasound cone sector, which were used to generate corresponding semantic diffusion model images</p> <p>ema_0.9999_050000_2ch_ed_256.pt and ema_0.9999_050000_4ch_ed_256.pt are the saved checkpoints for the 2 and 4 chamber diffusion models respectively.</p> <p>The pretrained segmentation networks are provided within the <a href="https://zenodo.org/api/files/0af4e6a3-234d-40a3-8351-c91261628982/final_models.zip">final_models.zip</a> file.</p> <p>A diagram of image numbers is shown in <a href="https://zenodo.org/api/files/0af4e6a3-234d-40a3-8351-c91261628982/Data%20diagram.png">Data diagram.png</a></p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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OpenNeuro
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