diff --git a/main.tex b/main.tex
index 7cde919..7923abb 100644
--- a/main.tex
+++ b/main.tex
@@ -188,7 +188,7 @@ However, the representation of lane anchors as rays presents certain limitations
 \begin{figure}[t]
 	\centering
 	\includegraphics[width=0.87\linewidth]{thesis_figure/coord/localpolar.png}
-	\caption{The local polar coordinate system. The ground truth of the radius $\hat{r}_{i}^{l}$ of the $i$-th local pole is defines as the minimum distance from the pole to the lane curve instance. A positive pole has a radius $\hat{r}_{i}^{l}$ that is below a threshold $\tau^{l}$, and vice versa. Additionally, the ground truth angle $\hat{\theta}_i$ is determined by the angle formed between the radius vector (connecting the pole to the closest point on the lanes) and the polar axis.}
+	\caption{The local polar coordinate system. The ground truth of the radius $\hat{r}_{i}^{l}$ of the $i$-th local pole is defines as the minimum distance from the pole to the lane curve instance. A positive pole has a radius $\hat{r}_{i}^{l}$ that is below a threshold $\lambda^{l}$, and vice versa. Additionally, the ground truth angle $\hat{\theta}_i$ is determined by the angle formed between the radius vector (connecting the pole to the closest point on the lanes) and the polar axis.}
 	\label{lpmlabel}
 \end{figure}
 \par