讲义（2篇）+ 参考文献（5篇） + Matlab代码打包下载：
The attachment included :
1. the ppts for edge extraction and visual saliency.
2. the code to demonstrate that edges are more discriminative than the original image.
3. the papers related to the topics we discussed.
For the edge extraction section:
We had fruitful discussion about why edge extraction is basic ...