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- ---
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- tags:
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- - aerial
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- - temporal
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- - time-series
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- - construction
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- - multiview
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- - change-detection
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- - world-model
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- - urban
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- task_categories:
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- - video-classification
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- - image-classification
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- - image-segmentation
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- - object-detection
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- size_categories:
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- - small
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- license: other
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- ---
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-
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- # CityLine — Temporal Aerial Construction Dataset (Sample)
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- **Temporal Aerial Vision · Construction Progress · Multiview Geometry · San Jose, CA**
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- CityLine is a multi-year aerial imagery sequence captured from a helicopter during the construction of a major mixed-use development in **San Jose, California**.
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- This sample highlights multiple construction phases over time, with several oblique views per capture date.
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- The full (commercial) dataset contains **hundreds of high-resolution images** with monthly coverage across several years — suitable for **world models, 3D reconstruction, change detection, construction analytics, and urban growth modeling**.
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- This dataset is a **limited preview sample** intended for evaluation and experimentation.
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- ---
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-
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- ## 📍 Project Overview
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-
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- | Property | Value |
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- |---------|------|
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- | Project name | CityLine |
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- | Location | San Jose, California, USA |
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- | Capture type | Helicopter-based oblique aerial imagery |
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- | Resolution | 12MP JPEG (RAW available commercially) |
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- | Coverage period (full set) | 2017 → 2025 (approx.) |
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- | Temporal cadence | ~monthly |
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- | Viewpoints per capture | Multiple oblique angles |
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- | Coordinates | 37.374751, -122.032811 |
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-
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- ---
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-
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- ## 📁 Dataset Contents (Sample)
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-
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- Folder structure:
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-
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- ```text
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- preview/ # resized JPEG previews for fast HF browsing
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- images/ # full-resolution JPEGs grouped by month
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- 2017-12/
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- 2019-01/
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- 2020-06/
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- 2021-09/
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- 2023-06/
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- 2025-01/
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- metadata.csv
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- ➡ Preview images are 2048px max dimension, ideal for Hugging Face’s viewer
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- ➡ Full-resolution files contain the highest-quality data for research/licensing
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-
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- metadata.csv Schema
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- Column Description
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- project_id Numeric ID for the project
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- project_name "CityLine"
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- filename Full-resolution image filename
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- preview_filename Lower-resolution preview filename
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- date Capture date parsed from filename
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- year_month Monthly grouping
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- image_seq Sequence index derived from filename
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- orbit_index Orbit grouping (sample = 1)
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- orbit_frame Ordered view index (1…N)
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- latitude Project latitude
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- longitude Project longitude
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- notes Optional annotation
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-
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- 🔧 Quick Usage Example
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- python
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- Copy code
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- import pandas as pd
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- from pathlib import Path
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- from PIL import Image
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-
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- meta = pd.read_csv("metadata.csv")
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-
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- # Load preview image first (fast)
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- preview_path = Path("preview") / meta['preview_filename'][0]
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- img_preview = Image.open(preview_path).convert("RGB")
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- img_preview.show()
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-
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- # Load matching full-resolution image when needed
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- full_path = Path("images") / meta['year_month'][0] / meta['filename'][0]
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- img_full = Image.open(full_path).convert("RGB")
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- img_full.show()
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- 🔐 Full Dataset Access & Licensing
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- This sample is provided for evaluation purposes only.
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- The complete CityLine dataset (836 images) and a library of 270+ full-lifecycle construction projects are available under commercial license:
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- Towers
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- Hospitals
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- Stadiums
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- Highways & interchanges
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- Commercial sites
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- Contact for full access:
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- 📧 gene@sharpshotsaerial.com
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- 🛰 About SharpShots Aerial
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- SharpShots Aerial specializes in long-term helicopter-based imaging of major construction and urban projects, enabling advanced mapping and AI research applications.
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-
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- yaml
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- Copy code