Writing surface boundary markers for computer vision

A method for capturing and storing handwritten notes, the method comprising:

• placing a plurality of boundary markers on a writing surface, such that the boundary markers define a virtual boundary encompassing the handwritten notes;
• capturing an image of a writing surface with an electronic device;
• determining the boundary based on positions of the markers in the writing surface image;
• unwarping a portion of the captured image within the virtual boundary to produce an unwarped image;
• and
• cropping the unwarped image based on the position of the detected boundary.

A system for sharing handwritten notes, the system comprising:

• a computer device coupled with a camera, the camera configured to view a writing surface having content;
• a plurality of boundary markers configured to be positioned between the writing surface and the camera to define a virtual boundary around a portion of the writing surface that includes the content,
• the computer device configured to:
• (1) detect the boundary markers, (2) determine the virtual boundary, and (3) provide a deskewed image of the portion of the writing surface.