display feature detected and prematches like images in the paper

[Fatmakaram97]

Can anyone help me by telling me how to display feature detected from the images and the matched features between the two images from the code?
As there are images for them in the paper but I can't display them from the code.

[cherryolg]

Hello, have you solved this problem?I also don't know how to visualize the matching process of feature points, connecting the matching points.