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3 results for “street level imagery”
StreetSurfaceVis: a dataset of street-level imagery with annotations of road surface type and quality
<h1>StreetSurfaceVis</h1> <p><em>StreetSurfaceVis</em> is an image dataset containing <strong>9,122 street-level images from Germany</strong> with labels on <strong>road surface type and quality.</strong> The CSV file <code>streetSurfaceVis_v1_0.csv</code> contains all image metadata and four folders contain the image files. All images are available in four different sizes, based on the image width, in 256px, 1024px, 2048px and the original size.<br>Folders containing the images are named according to the respective image size. Image files are named based on the <code>mapillary_image_id</code>.</p> <p>You can find the corresponding publication here: <a href="https://www.nature.com/articles/s41597-024-04295-9#citeas">StreetSurfaceVis: a dataset of crowdsourced street-level imagery with semi-automated annotations of road surface type and quality</a></p> <p> </p> <h3>Image metadata</h3> <p>Each CSV record contains information about one street-level image with the following attributes:</p> <ul> <li><code>mapillary_image_id</code>: ID provided by Mapillary (see information below on Mapillary)</li> <li><code>user_id</code>: Mapillary user ID of contributor</li> <li><code>user_name</code>: Mapillary user name of contributor</li> <li><code>captured_at</code>: timestamp, capture time of image</li> <li><code>longitude</code>, <code>latitude</code>: location the image was taken at</li> <li><code>train</code>: Suggestion to split train and test data. `True` for train data and `False` for test data. Test data contains data from 5 cities which are excluded in the training data.</li> <li><code>surface_type</code>: Surface type of the road in the focal area (the center of the lower image half) of the image. Possible values: asphalt, concrete, paving_stones, sett, unpaved</li> <li><code>surface_quality</code>: Surface quality of the road in the focal area of the image. Possible values: (1) excellent, (2) good, (3) intermediate, (4) bad, (5) very bad (see the attached <strong>Labeling Guide document</strong> for details)</li> </ul> <p> </p> <h3>Image source</h3> <p>Images are obtained from <a href="https://www.mapillary.com/">Mapillary</a>, a crowd-sourcing plattform for street-level imagery. More metadata about each image can be obtained via the <a href="https://www.mapillary.com/developer/api-documentation">Mapillary API . </a>User-generated images are shared by Mapillary under the <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC-BY-SA</a> License.</p> <p>For each image, the dataset contains the <code>mapillary_image_id</code> and <code>user_name</code>. <br>You can access user information on the Mapillary website by <code>https://www.mapillary.com/app/user/<USER_NAME> </code><br>and image information by <code>https://www.mapillary.com/app/?focus=photo&pKey=<MAPILLARY_IMAGE_ID></code></p> <p>If you use the provided images, please adhere to the <a href="https://www.mapillary.com/terms">terms of use of Mapillary.</a></p> <p> </p> <h3>Instances per class</h3> <p>Total number of images: 9,122</p> <table> <tbody> <tr> <td> </td> <td><strong>excellent</strong></td> <td><strong>good</strong></td> <td><strong>intermediate</strong></td> <td><strong>bad</strong></td> <td><strong>very bad</strong></td> </tr> <tr> <td><strong>asphalt</strong></td> <td>971</td> <td>1697</td> <td>821</td> <td>246</td> <td>-</td> </tr> <tr> <td><strong>concrete</strong></td> <td>314</td> <td>350</td> <td>250</td> <td>58</td> <td>-</td> </tr> <tr> <td><strong>paving stones</strong></td> <td>385</td> <td>1063</td> <td>519</td> <td>70</td> <td>-</td> </tr> <tr> <td><strong>sett</strong></td> <td>-</td> <td>129</td> <td>694</td> <td>540</td> <td>-</td> </tr> <tr> <td><strong>unpaved</strong></td> <td>-</td> <td>-</td> <td>326</td> <td>387</td> <td>303</td> </tr> </tbody> </table> <p> </p> <p>For modeling, we recommend using a train-test split where the test data includes geospatially distinct areas, thereby ensuring the model's ability to generalize to unseen regions is tested. We propose five cities varying in population size and from different regions in Germany for testing - images are tagged accordingly.</p> <p>Number of test images (train-test split): 776</p> <h3>Inter-rater-reliablility</h3> <p>Three annotators labeled the dataset, such that each image was annotated by one person. Annotators were encouraged to consult each other for a second opinion when uncertain.<br>1,800 images were annotated by all three annotators, resulting in a <em>Krippendorff's alpha</em> of 0.96 for surface type and 0.74 for surface quality.</p> <h3>Recommended image preprocessing</h3> <p>As the focal road located in the bottom center of the street-level image is labeled, it is recommended to crop images to their lower and middle half prior using for classification tasks.</p> <p>This is an exemplary code for recommended image preprocessing in <strong>Python</strong>:</p> <pre><code>from PIL import Image<br></code><code>img = Image.open(image_path)</code><br><code>width, height = img.size</code><br><code>img_cropped = img.crop((0.25 * width, 0.5 * height, 0.75 * width, height))</code></pre> <h3><br><strong>License</strong></h3> <p><a href="https://creativecommons.org/licenses/by-sa/4.0/">CC-BY-SA</a></p> <p> </p> <h3><strong>Citation</strong></h3> <p>If you use this dataset, please cite as: </p> <p> </p> <p>Kapp, A., Hoffmann, E., Weigmann, E. <em>et al.</em> StreetSurfaceVis: a dataset of crowdsourced street-level imagery annotated by road surface type and quality. <em>Sci Data</em> <strong>12</strong>, 92 (2025). https://doi.org/10.1038/s41597-024-04295-9</p> <p> </p> <p><code>@article{kapp_streetsurfacevis_2025,<br> title = {{StreetSurfaceVis}: a dataset of crowdsourced street-level imagery annotated by road surface type and quality},<br> volume = {12},<br> issn = {2052-4463},<br> url = {https://doi.org/10.1038/s41597-024-04295-9},<br> doi = {10.1038/s41597-024-04295-9},<br> pages = {92},<br> number = {1},<br> journaltitle = {Scientific Data},<br> shortjournal = {Scientific Data},<br> author = {Kapp, Alexandra and Hoffmann, Edith and Weigmann, Esther and Mihaljević, Helena},<br> date = {2025-01-16},<br>}</code></p> <p> </p> <p>-----------------------------------------------------------------------------------------------------------------------------------------------------------</p> <p>This is part of the SurfaceAI project at the University of Applied Sciences, HTW Berlin.</p> <p><br>- Prof. Dr. Helena Mihajlević<br>- Alexandra Kapp<br>- Edith Hoffmann<br>- Esther Weigmann</p> <p>Contact: surface-ai@htw-berlin.de</p> <p>https://surfaceai.github.io/surfaceai/</p> <p><strong>Funding</strong>: SurfaceAI is a mFund project funded by the Federal Ministry for Digital and Transportation Germany.</p> <p> </p>
Capturing land cover and land use with street level imagery
<p>This dataset, collected in September 2018, contains street-level photographs captured by three cameras fixed on the roof of car. A field survey was focused in the Vojvodina, Serbia to more closely examine land cover/land use within croplands monitored by LandSense citizen scientists (March-September 2018).</p> <p>The dataset has the following characteristics:</p> <ul> <li>Time period of data collection: Sep 2018</li> <li>Total number of photographs: 26759</li> <li>Region of interest: Vojvodina - Ruma municipality (Serbia)</li> </ul> <p>Associated files: Serbia Streetlevelimagery2018 – Attributes.txt, Serbia Streetlevelimagery2018.csv, Serbia Streetlevelimagery2018.zip</p> <p>This dataset is licensed under a Creative Commons Attribution 4.0 International. It is attributed to the <a href="https://landsense.eu/">LandSense Citizen Observatory</a>, <a href="https://ec.europa.eu/jrc/en">Joint Research Centre</a> and <a href="https://inosens.rs/">InoSens</a>.</p> <p>This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no 689812.</p>
Augmented Street-Level Imagery with Points of Interest (Data and Resources Track)
<p>Augmented Street-Level Imagery with Points of Interest (Data and Resources Track)</p>
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