About Drawing
This app helps people interested in drawing to draw. (Does not work for 5.x due to Android bug. Please update to Android 6.0+, or downgrade to 4.x)
There are 3 edge detection algorithms implemented. You can aim the camera at an object you would like to draw. You have control over filter and over camera zoom.
Once you are happy with the camera screen, you can freeze the image. Then you can grab a pencil, a paper, and then try to draw that object.