diff --git a/README.md b/README.md
index 1a1742d..a6ea408 100644
--- a/README.md
+++ b/README.md
@@ -13,19 +13,19 @@ This operator uses Facebook's [Detectron2](https://github.com/facebookresearch/d
 ## Code Example
 
 ```python
-import towhee
+from towhee.dc2 import pipe, ops, DataCollection
 
-towhee.glob('./example.jpg') \
-      .image_decode() \
-      .object_detection.detectron2(model_name='retinanet_resnet50') \
-      .show()
-```
-
-| Image | `boxes` | `classes` | `scores` |
-| ----- | ------- | --------- | -------- |
-| ![](example.jpg) | `array([2645.9973, 1200.3245, 3176.163, 2722.6785])` | `array([0])` | `array([0.9998573])` |
+p = (
+    pipe.input('path')
+        .map('path', 'img', ops.image_decode())
+        .map('img', ('boxes', 'classes', 'scores'), ops.object_detection.detectron2(model_name='retinanet_resnet50'))
+        .output('img', 'boxes', 'classes', 'scores')
+)
 
+DataCollection(p('./example.jpg')).show()
+```
 
+<img src="./result.png" alt="result" height="140px"/>
 
 ## Factory Constructor
 
diff --git a/requirements.txt b/requirements.txt
index 115c696..d898f7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,3 @@ torch >= 1.8
 torchvision >= 0.9.0
 black==21.4b2
 detectron2@https://github.com/facebookresearch/detectron2/archive/refs/tags/v0.6.tar.gz
-# detectron2@git+https://github.com/facebookresearch/detectron2.git@v0.6#egg=detectron2
diff --git a/result.png b/result.png
new file mode 100644
index 0000000..37bb751
Binary files /dev/null and b/result.png differ