Update README.md

README.md

@@ -12,4 +12,38 @@ tags:
 - line-segment-detection
 - wireframe-parsing
 pipeline_tag: keypoint-detection
----
+---
+
+# ULSD
+
+<p align="center">
+    ✏️ <a href="https://github.com/lh9171338/ULSD-ISPRS"><b>Github</b></a>&nbsp&nbsp | &nbsp&nbsp📑 <a href="https://www.sciencedirect.com/science/article/abs/pii/S0924271621001623">Paper</a>
+</p>
+
+This repository contains the official models of the paper: [ULSD: Unified Line Segment Detection across Pinhole, Fisheye, and Spherical Cameras](https://www.sciencedirect.com/science/article/abs/pii/S0924271621001623).
+
+## Summary
+
+ULSD is a unified line segment detection method for both distorted and undistorted images from pinhole, fisheye or spherical cameras. With a novel line segment representation based on the Bezier curve, our method can detect arbitrarily distorted line segments. Experimental results on the pinhole, fisheye, and spherical image datasets validate the superiority of the proposed ULSD to the SOTA methods both in accuracy and efficiency. Especially, the performance of ULSD trained on the three-mixed dataset further demonstrates its effectiveness and generality across the three common camera model.
+
+## Download
+
+- Download with Git
+
+```shell
+git lfs install
+git clone https://huggingface.co/lh9171338/ULSD
+```
+
+## Citation
+
+```
+@article{LI2021187,
+    title = {ULSD: Unified line segment detection across pinhole, fisheye, and spherical cameras},
+    author = {Hao Li and Huai Yu and Jinwang Wang and Wen Yang and Lei Yu and Sebastian Scherer},
+    journal = {ISPRS Journal of Photogrammetry and Remote Sensing},
+    volume = {178},
+    pages = {187-202},
+    year = {2021},
+}
+```