diff --git a/.gitignore b/.gitignore
index 8155012..6e2c0e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.jpg
 *.npz
 __pycache__/
+!corner*.jpg
\ No newline at end of file
diff --git a/imgs/corner_bl.jpg b/imgs/corner_bl.jpg
new file mode 100644
index 0000000..81e4d1c
--- /dev/null
+++ b/imgs/corner_bl.jpg
Binary files differ
diff --git a/imgs/corner_br.jpg b/imgs/corner_br.jpg
new file mode 100644
index 0000000..126596e
--- /dev/null
+++ b/imgs/corner_br.jpg
Binary files differ
diff --git a/imgs/corner_ul.jpg b/imgs/corner_ul.jpg
new file mode 100644
index 0000000..642fbbf
--- /dev/null
+++ b/imgs/corner_ul.jpg
Binary files differ
diff --git a/imgs/corner_ur.jpg b/imgs/corner_ur.jpg
new file mode 100644
index 0000000..1ab1ee1
--- /dev/null
+++ b/imgs/corner_ur.jpg
Binary files differ