diff --git a/assets/abaltion_study_loss.png b/assets/abaltion_study_loss.png
new file mode 100644
index 0000000..48ea368
Binary files /dev/null and b/assets/abaltion_study_loss.png differ
diff --git a/index.md b/index.md
index 75ccc63..ea1fdc4 100644
--- a/index.md
+++ b/index.md
@@ -4,12 +4,20 @@ Case study of the FCA. The code can be find in [FCA]([http://]).
 
 ### Cases of digital attack
 
-
+!(image)[https://github.com/winterwindwang/Full-coverage-camouflage-adversarial-attack/blob/gh-pages/assets/distance_10_elevation_30_adv_pred.gif]
 
 ### Cases of multi-view robust
 
 
 
+### Ablation study
+
+#### Different combination of loss terms
+
+![](https://github.com/winterwindwang/Full-coverage-camouflage-adversarial-attack/blob/gh-pages/assets/abaltion_study_loss.png)
+
+As we can see from the Figure, different loss term plays different role in attacking. For example, the camouflaged car generated by `obj+smooth (we omit the smooth loss, and denotes as obj)` hardly hidden from the detector, while the camouflaged car generated by `iou` successfully suppress the detecting bounding box of the car region, and finally the camouflaged car generated by `cls` successfully make the detector to misclassify the car to anther category.
+
 ### Markdown
 
 Markdown is a lightweight and easy-to-use syntax for styling your writing. It includes conventions for