Abstract: Methods for projecting, detecting, and processing digital notes. The digital notes can be displayed on a mixed reality device combined with physical notes in the same space. Physical notes can be automatically detected in view of a camera and converted to a corresponding digital note, and if the note has an obstruction the obstruction is removed in the digital note. Digital notes can be projected onto a wall and, upon detecting a change in scene, a new scene is projected onto the wall with the detected change. Physical notes can be automatically detected in view of a camera and converted to a corresponding digital note along with a recorded audio associated with the digital note.