DIY Camera Using Raspberry Pi
As a prof seeings students waste time scanning their homework, one gadget I want to build is a easy to use scanner, with a Rpi Zero and a cheap camera.<p>The idea is to have the camera with a wide angle lens attached to the top of stack of papers/notebook. Pressing a button takes a picture, and then does a affine transform (?) on it get the perspective right, then uploads it to the LMS.<p>Just a clean, hassle free experience. No orienting your phone awkwardly, no getting the lighting right, no mini edits on your phone, no compiling pdfs.<p>Also, very useful for me, as I like to do math by hand.<p>Edit: Image <a href="https://imgur.com/Fb45H7M.png" rel="nofollow">https://imgur.com/Fb45H7M.png</a> The fact that camera is fixed relative to paper means the transform is also fixed. Multi-colored led (and knowledge of paper color) can also fix lighting.