From: zhang on
Hi guys

I have encountered a very weird problem.

There is an image which includes a person. I draw a rectangle on the person's face.
And then I use imshow to display this image. It's ok, there is a rectangle on the person's face.

However, while I show this image with rectangle to axes, the rectangle is not complete(there are only three lines on the person's face).
________ ________
| | | |
| |(normal) | | (exceptional)
|_______| | |
From: ImageAnalyst on
It most likely disappeared due to subsampling for display. Try using
a thicker linewidth.