Update README.md

README.md

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 ---
-title: Sparse Image to 3D GIS
-emoji: 🗺️
-colorFrom: green
-colorTo: blue
+title: Sparse2City3D
 sdk: gradio
-sdk_version: 5.46.0
 app_file: app.py
 pinned: false
----
-
-# Hugging Face Space Skeleton
-
-This folder contains a reference implementation of a Hugging Face Space that turns a bundle of sparse photographs into a previewable 3D reconstruction. It assumes the heavy lifting is performed by COLMAP, Nerfstudio, and 3D Gaussian Splatting.
-
-## Files
-
-| File | Purpose |
-| --- | --- |
-| `app.py` | Gradio application that orchestrates preprocessing, reconstruction backends, and artifact export. |
-| `requirements.txt` | Python dependencies installed by the Space runtime. |
-| `packages.txt` | `apt` packages Hugging Face installs before pip dependencies (COLMAP prerequisites). |
-| `assets/demo.zip` | Drop a miniature dataset here for automated smoke tests (optional). |
-| `external/gaussian-splatting/` | (Optional) place the upstream Gaussian Splatting repo here if you want to expose that backend. |
-
-## Running locally
-
-```bash
-python -m venv .venv               # optional but recommended
-source .venv/bin/activate
-pip install --upgrade pip
-pip install -r requirements.txt
-
-# Optional: only if you want Gaussian Splatting available
-git clone https://github.com/graphdeco-inria/gaussian-splatting.git external/gaussian-splatting
-
-# Launch the interface
-python app.py
-```
-
-Open http://localhost:7860 to access the Gradio UI. Override `HF3D_OUTPUT_ROOT` to choose where run artifacts are stored and `GAUSSIAN_SPLATTING_ROOT` if the repository lives somewhere else on disk.
-
-## Deploying to Hugging Face Spaces
-
-1. Create a new Space with the **Gradio** SDK and GPU hardware.
-2. Upload the contents of this folder to the Space repository (or set it as a Git submodule).
-3. If you modify dependencies, rebuild the Space and monitor logs for compilation errors (Gaussian Splatting requires CUDA).
-4. Enable persistent storage to cache COLMAP databases, Gaussian point clouds, and Nerfstudio checkpoints.
-
-See the root documentation for more context and pipeline details.
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