Can not recognize some image

[gulullu]

Hi, Thanks to your great project. It works fine for normally rectangle image. But if there's something overlays it a little bit, it will recognize fail, like below image:

And I tried on camscanner app, it works!
Would you please tell me how to fix this? thx~

[mukyasa]

Hello , 1.This project is just a simulation of Camscanner app and Not exact copy of that app.We are using open source OpenCV SDK. ​2. You may have to change the algorithm of Gaussian blur and point detection to meet your requirements