Oasis mri dataset. Reload to refresh your session.

Oasis mri dataset img and . The dataset comprises 86. 5T MRI dataset. Dec 15, 2019 · OASIS-3 is a compilation of MRI and PET imaging and related clinical data for 1098 participants who were collected across several ongoing studies in the Washington University Knight Alzheimer Data used in this report are taken with permission from the OASIS Brains Datasets. 72 of the subjects were participants may be included in all three datasets (OASIS-1, OASIS-2, and OASIS-3) under unique IDs. So, it is clear that our approach is providing better Open Access Series of Imaging Studies(OASIS)是一个以促进基础和临床神经科学的未来发现为目的的，旨在向科学界免费提供大脑神经影像数据集的项目。在 OASIS 官方网站上有四个版本，本文介绍 L2R Challenge （Medical Image Registration in MELBA）中 OASIS dataset 版本。该数据集用于 There are four versions available on the OASIS official website, and this description refers to the OASIS dataset version used in the L2R Challenge (Medical Image Registration in MELBA). End-to-End Workflow: Includes data preprocessing, augmentation, model training, evaluation, and OASIS-3 is the latest release in the Open Access Series of Imaging Studies (OASIS) that aimed at making neuroimaging datasets freely available to the scientific community. In the remainder of this article, we describe the first OASIS data set release. Dalca for the following HyperMorph paper. 1498) OASIS-2: Longitudinal T1w MR images in older adults (ages 60-96) with dementia status This project utilizes MRI datasets from the Open Access Series of Imaging Studies (OASIS) to develop machine learning models for Alzheimer's disease detection and analysis. The following links contain important information on OASIS-2 subjects and processing. Also, before doing the modeling bit, we performed a simple exploratory data analysis. Kaggle Notebook: The original notebook containing the complete code, results, and visualizations can be accessed here: View Notebook on Kaggle Apr 2, 2024 · OASIS-3: Longitudinal Multimodal Neuroimaging, Clinical, and Cognitive Dataset for Normal Aging and Alzheimer’s Disease Visit Website OASIS-3 is a retrospective compilation of data for 1378 participants that were collected across several ongoing projects through the WUSTL Knight ADRC over the course of 30years. This is a unique dataset and not an update to the OASIS-3 Longitudinal Multimodal Neuroimaging dataset. was 74. This research uses two datasets—4 classes of images from Kaggle and a popular OASIS 2 MRI and demographic dataset. The OASIS-1 dataset is a cross-sectional collection of MRI scans of young, middle-aged, nondemented, and demented older adults. The data comprises MRI images collected from various websites, hospitals, and public databases, with each and every label Download scientific diagram | Details of the OASIS, ADNI, IBSR, and MICCAI datasets. It aims to explore the relationship between MRI data and Alzheimer's, providing insights for early diagnosis and disease progression prediction. , and Non-Dementia using the OASIS MRI dataset. Dec 16, 2023 · The OASIS cross-sectional dataset is composed of MRI scans from a total of 416 individuals, whose ages range from 18 to 96 years old. participants may be included in all three datasets (OASIS-1, OASIS-2, and OASIS-3) under unique IDs. org – a project dedicated to the free and open sharing of raw magnetic resonance imaging (MRI) datasets. Demographic Data. If you use it, you need to agree with the data usage agreement available on the website. 2007. These data were prepared by Andrew Hoopes and Adrian V. OASIS-1: Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults Summary: This set consists of a cross-sectional collection of 416 subjects aged 18 to 96. OASIS-1: Cross-Sectional T1w MR images across the lifespan (ages 18-96) with dementia status (doi: 10. Therefore, we decided to create a survey of the major publicly accessible MRI datasets in different subfields of radiology (brain, body, and musculoskeletal), and list the most important features of value to the AI researcher. Software platform for clinical neuroimaging studies. OASIS-1 is a cross-sectional collection featuring 416 subjects aged 18 to 96, primarily providing T1-weighted MRI scans, with a certain portion diagnosed with Alzheimer's disease. AD Detection Models Using OASIS-3. The images have been divided into four classes based on Alzheimer's progression. Learn more. OASIS-1: Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults includes 416 subjects aged 18 to 96, 100 of whom were clinically diagnosed with Alzheimer's disease. 1. By collecting and distributing neuroimaging datasets freely, we hope to facilitate and help future Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults Summary This set consists of a cross-sectional collection of 416 subjects aged 18 to 96. Original T1-weighted MRI slice (left), gray matter probabilities (middle left),white matter Attributions to the OASIS pro-ject will lend to the credence of OASIS as a reference resource. 8% and 86. ,437 MRI The dataset utilized is the OASIS Alzheimer's Dataset obtained from Kaggle, containing multiple brain MRI images across different classes. The present MRI data set consists of a longitudinal collection of 150 subjects aged 60 to 96 all acquired on Sep 2, 2020 · OASIS Dataset Analysis. Dec 1, 2010 · Abstract. edu/oasisbrains/home Apr 2, 2024 · OASIS-4 contains MR, clinical, cognitive, and biomarker data for 663 individuals aged 21 to 94 that presented with memory complaints. MRI take help of radio waves and a magnetic field to capture brain status. Description. A deep learning-based approach was adopted to train the Kaggle dataset to perform severity classification, and the hippocampus region segmented from a reduced version of the OASIS dataset was trained on supervised and ensemble This research uses two datasets-4 classes of images from Kaggle and a popular OASIS 2 MRI and demographic dataset. OASIS-1; OASIS-2; OASIS-3 OASIS-3. OASIS-2 Longitudinal Scan Data. Marcus et al. Data and Resources Original Metadata JSON The data is from OASIS dataset MRI scans obtained from https://www. By collecting and distributing neuroimaging datasets freely, we hope to facilitate and help future discoveries and There are 416 subjects aged 18 to 96, and for each of them, 3 or 4 T1-weighted MRI scans are available. Permission to reshare imaging These will be explained in more detail in The Tools. The study reported 83. Request Access to All OASIS Datasets; Register with NITRC; Request Access to OASIS-3 Tau (A1451) OASIS Resources and FAQ OASIS Resources and FAQ. This chapter uses Magnetic resonance imaging (MRI) data from the Open Access Series of Imaging Studies (OASIS) [5,6,7]. ParvN/Dementia-classification-on-MRI-dataset. The project explores downsampling techniques, image modifications (blur and edge detection), and ensemble methods to enhance classification accuracy. OASIS 1 DATA FEATURE DESCRIPTION Feature Description MRI ID The identification code for each MR session. and Kavitha et al. OASIS-2 Longitudinal image data is available at the following links. 1498) OASIS-2: Longitudinal T1w MR images in older adults (ages 60-96) with dementia status Dec 11, 2020 · The data is from OASIS dataset MRI scans obtained from https://www. Dec 13, 2019 · OASIS-3 data release, which expands upon these prior releases. Reload to refresh your session. The specific collection used in this study is the ADNI1:Screening 1. edu/oasisbrains/home OASIS-1 set consists of a cross-sectional collection of 416 subjects aged 18 to 96. The following shell script can be used to download large amounts of data from the OASIS-4 dataset on NITRC-IR. OpenfMRI. Request Access to All OASIS Datasets; Navigate OASIS in NITRC-IR; OASIS-4; Request Access Request Access. The dataset contains 2842 MR sessions which include T1w, T2w, FLAIR, ASL, SWI, time of flight, resting-state BOLD, and DTI sequences. OASIS-4 contains MR, clinical, cognitive, and biomarker data for individuals that presented with memory complaints. This dataset addresses the limitations of existing Alzheimer’s MRI datasets, which often suffer from redundancy and unclear data sources. org OASIS is a project which is aimed at making and providing neuroimaging datasets of the brain available freely to OASIS-2 Longitudinal Subject Data. jpg format, sourced from . Oct 25, 2021 · Mediocre results were achieved with the OASIS Brains dataset. 92% accuracy. Dec 15, 2019 · OASIS-3 data release, which expands upon these prior releases. Model Achievements: Achieved 99% accuracy with optimized CNN architectures. This study presents a Convolutional Neural Network (CNN)-based model to classify AD stages: Mild Dementia. medical-datasets是一个综合性医学影像数据集资源库,收录了MRI、CT和X射线等多种模态的影像数据。涵盖从大脑到胸部的多个人体部位,不仅包含原始图像,还提供分割标注和临床诊断等信息。该项目为医学影像分析、人工智能和机器学习领域的研究与应用提供了丰富的数据支持。 IXI Dataset is a collection of 600 MR brain images from normal, healthy subjects. Oct 27, 2023 · Despite being an emerging field, a simple internet search for open MRI datasets presents an overwhelming number of results. Only rationale for NN architecture was to keep it relatively simple. The learning rate of optimizer was lowered because it was initially learning too quickly (accuracy curve was too steep). tar. 1. Unlike many Kaggle datasets, this one is sourced directly from the OASIS (Open Access Series of Imaging Studies) database. - alzheimers_disease/oasis UK Biobank participants have generously provided a very wide range of information about their health and well-being since recruitment began in 2006. Dataset The dataset used for this project is the OASIS Alzheimer’s Detection Dataset, which can be found at Kaggle: ImagesOASIS . 9. For each subject, 3 or… This set consists of a longitudinal collection of 150 subjects aged 60 to 96. This can be done by following the instructions here. T1 – weighted MRI scan The OASIS 1 Cross-sectional MRI dataset consists of 12 features that were recorded at every MR scanning session. This set consists of a longitudinal collection of 51 subjects aged 62 to 92. OASIS-3 is a longitudinal multimodal neuroimaging, clinical, cognitive, and biomarker dataset for normal aging and Alzheimer’s Disease. Each subject was scanned on two or more visits, separated by at least one year for a total of 373 imaging sessions. RIRE 2009 Head MRI, CT and PET 18 patient datasets including one training dataset mhd OASIS OASIS-3 2018 Brain MRI and PET 2000 MR sessions (T1, T2, Flair, SWI, ASL) PET images from 3 different You signed in with another tab or window. While high variance and good balance were maintained for 20 epochs, after epoch 20 the adversar May 9, 2020 · MIDAS Multimodality dataset of same patient included CT, MRI and PET images of Brain samples [9]: (a) Brain CT scan images, (b) T1-weighted MRI Brain images, (c) T2-weighted MRI Brain images, (d The suggested method is evaluated on two publicly available datasets obtained from Kaggle (Augmented Alzheimer MRI dataset Citation 2024), (Alzheimer MRI Preprocessed Dataset Citation 2024), OASIS and ADNI, respectively. OAS2_RAW_PART1. If you use this collection please cite the following and The dataset consists of T1-weighted brain MRI images of adults, with manual segmentation of anatomical structures provided. You switched accounts on another tab or window. The This dataset comprises 80,000 brain MRI images of 461 patients and aims to classify Alzheimer's progression based on Clinical Dementia Rating (CDR) values. OASIS-3 incorporates data from 1098 participants covering the adult life span aged 42 to 95, including cognitively normal individuals and individuals with early-stage AD dementia. hdr. Dataset: The dataset used in this project is the OASIS Alzheimer's MRI dataset, which can be accessed on Kaggle: OASIS Dataset on Kaggle. 891% while using the MRI and segmentation dataset from OASIS-3. nii files. Feb 26, 2019 · Neurite-OASIS数据集由414个来自OASIS数据集的T1加权MRI图像组成，这些图像经过FreeSurfer和SAMSEG工具的处理。处理过程包括原始图像的预处理、体积重建以及生成解剖学分割图。 The data is from OASIS dataset MRI scans obtained from https://www. For each subject, 3 or 4 individual T1-weighted MRI scans obtained in single scan sessions are included. Apr 1, 2022 · Also the study considered only 240 images of OASIS-3 dataset. TABLE I. The OASIS Data Use Agreement is available at www. Due to the hierarchical nature of data points having dimension as 373∗15, all the features have been considered for data modeling and predicting the disease. org OASIS is a project which is aimed at making and providing neuroimaging datasets of the brain available freely to Datasets Datasets. in 2007 [7] consist of long-term collection of . The Open Access Series of Imaging Studies is a series of neuroimaging data sets that are publicly available for study and analysis. Age The age of the subject at the time of the MR session. Oct 22, 2024 · The data is from OASIS dataset MRI scans obtained from https://www. The evaluation of LSTM-based methodology with Boruta feature selection using OASIS MRI and Alzheimer's MRI dataset suggest that proposed methodology was able to achieve an accuracy of 94% on test CONCLUSION AND FUTURE SCOPE In this study, we have investigated the longitudinal MRI images consisting of neuroimaging test images in the OASIS dataset. The dataset consists of 416 subjects, each with 3 or 4 individual T1-weighted MRI scans. Oct 31, 2024 · The OASIS Brain Dataset 包含多个年龄段的健康个体和阿尔茨海默病患者的脑部MRI图像。数据集旨在用于研究脑部结构和功能，特别是与年龄和神经退行性疾病相关的变化。 The dataset used is the OASIS MRI dataset, which consists of 80,000 brain MRI images. MR session datafor a subject size of 1 50 consisting of non- Kaggle is the world’s largest data science community with powerful tools and resources to help you achieve your data science goals. wustl. By compiling and freely distributing this multi-modal dataset, we hope to facilitate future discoveries in basic and clinical neuroscience. In AD research, various ML algorithms, such as SVMs and ensembles, have been Mar 3, 2024 · Using the OASIS-3 dataset 10, we explore the utility of both 2D and 3D MRI and PET scans in uni-modal and multi-modal configurations, diverging from the predominant focus on single-modality May 31, 2024 · OASIS-3 is the latest release in the Open Access Series of Imaging Studies (OASIS) that aimed at making neuroimaging datasets freely available to the scientific community. 2. Each subject was scanned on two or more visits, separated by at least 1 year for a total of 373 2 days ago · Kaggle is the world’s largest data science community with powerful tools and resources to help you achieve your data science goals. OASIS MRI Data in Young, Middle Aged Organized data collection including 414 subjects from the open-access OASIS dataset processed with FreeSurfer and SAMSEG for the neurite package. 3% accuracy but did not mention how data is split into training and testing sets. The Open Access Series of Imaging Studies (OASIS) is a project aimed at making MRI data sets of the brain freely available to the scientific community. Voxel-Based Morphometry on Oasis dataset¶ This example uses Voxel-Based Morphometry (VBM) to study the relationship between aging, sex and gray matter density. The OASIS MRI data set can reduce the cost of deeplearning models by a quarter while improving their performance [13]. OASIS is a project which is aimed at making and providing neuroimaging datasets of the brain available freely to the scientific researchers . An interesting project Dec 6, 2024 · For this study, the OASIS 2 dataset from OASIS was selected as it provides comprehensive demographic data and MRI scans, both essential for predicting the onset and progression of dementia. Many of the MR sessions are accompanied by volumetric segmentation files produced through FreeSurfer processing. One hundred of the included subjects older than 60 years … Open Access Series of Imaging Studies (OASIS): cross-sectional MRI data in young, middle aged, nondemented, and demented older adults The Open Access Series of Imaging Studies (OASIS) UTA7: Breast Cancer Medical Imaging DICOM Files Dataset & Resources (MG, US and MRI) https: 对于每个受试者，包括在单次扫描会话中获得的 3 或 4 次单独的 t1 加权 mri 扫描。 受试者都是右撇子，包括男性和女性。 其中 100 名 60 岁以上的受试者被临床诊断患有极轻度至中度阿尔茨海默病 (AD)。 Jan 20, 2025 · project uses the publicly available OASIS brain MRI dataset, which includes MRI scans of subjects with varying stages of AD. A deep learning-based approach was adopted to train the Kaggle dataset to perform severity classification, and the hippocampus region segmented from a reduced version of the OASIS dataset was trained on supervised and ensemble Click to add a brief description of the dataset (Markdown and LaTeX enabled). The latest series of the dataset, OASIS-3, received much attention due to the availability of more data compared with OASIS-1 and OASIS-2. , where early detection is crucial for improving patient outcomes and slowing disease progression. This notebook outlines the process of preprocessing the OASIS-1 dataset, including Oct 30, 2024 · OASIS数据集是一个开放获取的成像研究系列，主要包含脑部MRI图像。该数据集用于研究阿尔茨海默病和其他神经退行性疾病。数据集包括多个年龄段的健康和患病个体的脑部扫描图像，以及相关的临床数据。 414 T1 MRIs from the OASIS dataset, processed using FreeSurfer and SAMSEG Includes original images, along with processed volumes and resulting anatomical segmentation maps Keywords: large, MRI, segmentations, labels, annotations, processed Dataset: OASIS MRI dataset with 80,000 brain MRI images in . Download Scripts; OASIS on XNAT Jul 16, 2021 · Dr Gordon Kindlmann’s brain – high quality DTI dataset of Dr Kindlmann’s brain, in NRRD format. You signed out in another tab or window. Large-scale brain MRI dataset for deep neural network analysis OASIS Alzheimer's Detection | Kaggle Kaggle uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Participants include 605 cognitively normal adults and 493 individuals at various stages of cognitive decline ranging in age from 42 to 95 years. M/F The sex of the subject Jul 1, 2018 · OASIS-3 is the latest release in the Open Access Series of Imaging Studies (OASIS) that aimed at making neuroimaging datasets freely available to the scientific community. Comparing the performance of the CNN, BayesianCNN, and U-net models on this dataset, this study has aimed to evaluate their potentials in supporting early detection and monitoring of AD, hence contributing to A dataset for classify brain tumors Brain Tumor MRI Dataset | Kaggle Kaggle uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. 2% was concluded. org. achieved 86. This paper uses a combination of brain MRI The data is from OASIS dataset MRI scans obtained from https://www. OASIS-1 Summary: This set consists of a cross-sectional collection of 416 subjects aged 18 to 96. Classes: Non-Demented, Very Mild Demented, Mild Demented, Demented. This dataset is used for segmentation and registration and contains a total of 416 3D MR datasets, with label masks for segmentation and masks for registration. The initial data set consists of a cross-sectional collection of 416 subjects aged 18 to 96 years. . [47] mentioned to use entire OASIS-3 dataset and mentioned use of 2168 MRI images while there are only 1098 subjects in OASIS-3 dataset. Volume slices, selected from the pre-processed OASIS-1 dataset, showing tissue segmentation examples. 1162/jocn. Two datasets are available: a cross-sectional and a longitudinal set. OASIS. Curated T1w MRI and CT scans from diverse sources, including the CERMEP-iDB-MRXFDG, OASIS3, NeuroMorphometrics1, IXI 2, and an in-house dataset. Dataset: OASIS dataset. OASIS is a project which is aimed at making and providing neuroimaging datasets of the brain available freely to the scientific researchers [9]. Similarly, the study by Battineni et al. The goal is to image 100,000 participants, and to invite The Open Access Series of Imaging Studies (OASIS) is a series of neuroimaging data sets that is publicly available for study and analysis. This set consists of a longitudinal collection of 150 subjects aged 60 to 96. from publication: MRI Segmentation and Classification of Human Brain Using Deep Learning for Diagnosis of A subset of OASIS-2 was used for a preliminary study, where an accuracy of 88. This dataset is crucial for training and validating our machine learning models to ensure accurate Alzheimer's progression classification. There were 150 participants with ages ranging from 60 to 96 years and various measures were taken such as T1-weighted MRI scans, brain Kaggle is the world’s largest data science community with powerful tools and resources to help you achieve your data science goals. Imaging data¶. , Very Mild Dementia. OASIS-3 is a longitudinal multimodal neuroimaging, clinical, cognitive, and biomarker dataset for normal aging and Alzheimer’s Disease. The data come from the OASIS project. Each participant underwent between 3 and 4 T1-weighted MRI scans in a single scan session. The OASIS 2 Longitudinal MRI dataset consists of long-term MRI session data for 150 subjects aged 60 to 96. They do, however seem to be processed as they have freesurfer segmentation data, but I don't know how I would go from here to 2D slices (like the kaggle dataset) that I could . The present MRI data set consists of a longitudinal collection of 150 subjects aged 60 to 96 years all acquired on the same scanner using identical sequences. gz (10 GB Download) OAS2_RAW_PART2. OASIS – The Open Access Structural Imaging Series (OASIS): starting with 400 brain datasets. This has been added to in the following ways: Imaging: Brain, heart and full body MR imaging, plus full body DEXA scan of the bones and joints and an ultrasound of the carotid arteries. OASIS-4 Clinical and Psychometric dictionary; OASIS-4 CSF Data Dictionary; Data File Download: Click on MR session (OASIS4_data_files) Select assessments you want to download; Bulk action Download; OASIS-4 Scan Download Scripts. Fig. 100 of the patients having age over 60 are included in the dataset with very mild to Nov 16, 2023 · Training and testing the RF model on MRI OASIS data Baglat et al. A dataset containing baseline and time-varying information relating to Alzheimer's disease (AD) based on the Open Access Series of Imaging Studies (OASIS). The dataset aims to provide a valuable resource for analyzing and detecting early signs of Alzheimer's disease. OASIS Longitudinal. MRI provides detailed image of brain. The version of OASIS dataset was not mentioned in their work. 19. The subjects are all right-handed and include both men and women. The MR image acquisition protocol for each subject includes: T1, T2 and PD-weighted images MRA images Diffusion-weighted images (15 directions) The data has been collected at three different hospitals in London: Hammersmith Hospital using a Philips 3T system (details of scanner parameters) Guy’s Hospital using Jul 12, 2023 · For the AFIDs-OASIS dataset, users will need to accept the DUA on the website (https://www. May 29, 2024 · Longitudinal MRI data in nondemented and demented older adults. A deep learning-based approach was adopted to train the Kaggle dataset to perform severity classification, and the hippocampus region segmented from a reduced version of the OASIS dataset was trained on supervised and ensemble Jan 23, 2025 · Dataset Description Official Website Release Date Challenge; L2R-OASIS: 3D MRI, 416 Cases, 35 Categories of Brain Segmentation and Registration: Grand Challenge TCIA – The Cancer Imaging Archive consisting of extensive number of datasets from Lung IMage Database Consortium (LIDC), Reference Image Database to Evaluate Response (RIDER), Breast MR, Lung PET/CT, Neuro MRI scans, CT Colonoscopy, Osteoarthritis database (MIA), PET/CT phantom scans; OASIS – Cross sectional imaging MRI data Alzheimer's Disease (AD) is a progressive neurodegenerative disorder. (https://sites. Open Access Series of Imaging Studies (OASIS) The Open Access Series of Imaging Studies (OASIS) offers diverse neuroimaging datasets to the research community. gz (8 GB Download) The dataset used for this project is the OASIS Alzheimer’s Detection Dataset, which can be found at Kaggle: ImagesOASIS. Dec 15, 2019 · OASIS-3 is a compilation of MRI and PET imaging and related clinical data for 1098 participants who were collected across several ongoing studies in the Washington University Knight Alzheimer Disease Research Center over the course of 15 years. Description: The dataset consisted of MRI acquired in 90 healthy adults and 105 adults with a non-affective psychotic disorder (56 schizophrenia, 32 schizoaffective disorder, and 17 schizophreniform disorder) taken from the Psychiatric Genotype/Phenotype Project data repository at Vanderbilt University Medical Center (Nashville, TN, USA Oct 30, 2020 · The OASIS 2 Longitudinal MRI dataset [6] released by . The OASIS-3 release includes structural and functional MRI (magnetic OASIS MRI Data in Young, Middle Aged,Nondemented, and Demented Older Adults. Kaggle uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Anyone wishing to distribute derived data will be encouraged to include the original images. To download the images of the OASIS-3 dataset: From the page on which you were to download the clinical date, click on "Download Images" button. oasis-brains. Jan 3, 2023 · This research uses two datasets—4 classes of images from Kaggle and a popular OASIS 2 MRI and demographic dataset. The OASIS-3 release includes structural and functional MRI (magnetic This framework proposes the OASIS (Open Access Series of Imaging Studies) dataset, which contains the existing MRI data set, which is comprised of a longitudinal sample of 150 subjects aged 60 to 96 who were all acquired on the same scanner using similar sequences. 3. , Moderate Dementia. By collecting and distributing neuroimaging datasets freely, we hope to facilitate and help future OASIS MRI Dataset divided into train and test. To get started, you must first download the ADNI dataset. The accuracy of Buvari et al. Jun 1, 2023 · It is mostly used to study strokes, trauma, or tumors to understand cognitive change. https://sites. org), but no user credentials are required for data access. Provide: a high-level explanation of the dataset characteristics explain motivations and summary of its content potential use cases of the dataset As an example, in the second link, the OASIS-1 dataset has a very complex folder and file structure, with different file formats for the same image, such as . vtrg uyxm uprf enszp huek fralq nibscj vsmeid xefmjw wcereq pabdmw spmx nbr vzji dnyri