diff --git a/schema/background_schema_3sources.png b/schema/background_schema_3sources.png
new file mode 100644
index 0000000..b2f83a9
--- /dev/null
+++ b/schema/background_schema_3sources.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de4fcf5eda9865cb33908e46fd69b16ac579a6b91f91b0e098d109ee40f3fb58
+size 85632
diff --git a/schema/background_schema_4sources.png b/schema/background_schema_4sources.png
new file mode 100644
index 0000000..813d29b
--- /dev/null
+++ b/schema/background_schema_4sources.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8fd032431df1301b771a296734caaf328ede03c8fd9447272e6d04d1c98519aa
+size 54884
diff --git a/schema/background_schema_pip.png b/schema/background_schema_pip.png
new file mode 100644
index 0000000..9780782
--- /dev/null
+++ b/schema/background_schema_pip.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04427d4d3dc55de9f489a79da51a4c5386e5e3b6f31cba95ed07af6b541d5bb9
+size 82775
diff --git a/schema/background_schema_sbs.png b/schema/background_schema_sbs.png
new file mode 100644
index 0000000..f35074b
--- /dev/null
+++ b/schema/background_schema_sbs.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:615fb7aff77bc30921de837a8a311345a97d059844da803b13cd976257fb8c87
+size 107680