added visualization codes

Author: Depu Meng (FA Talent)

README.md

@@ -232,6 +232,16 @@ python visualize/plot_coco.py --prediction [your/prediction/path.json]
 python visualize/plot_mpii.py --prediction [your/prediction/path.mat]
 ```
 
+
+<img src="figures\visualization\coco\score_610_id_2685_000000002685.png" height="200">
+<img src="figures\visualization\coco\score_710_id_153229_000000153229.png" height="200">
+<img src="figures\visualization\coco\score_755_id_343561_000000343561.png" height="200">
+
+<br/>
+<img src="figures\visualization\mpii\id_0.png" height="165.5">
+<img src="figures\visualization\mpii\id_54.png" height="165.5">
+<img src="figures\visualization\mpii\id_566.png" height="165.5">
+
 ### Other applications
 Many other dense prediction tasks, such as segmentation, face alignment and object detection, etc. have been benefited by HRNet. More information can be found at [High-Resolution Networks](https://github.com/HRNet).