Note recognition and management using multi-color channel non-marker detection

A method, comprising:

• receiving, by a computing device, an input image of an environment having a plurality of physical notes;
• generating, by the computing device, a transformed image by applying edge detection to the input image;
• processing, by the computing device, the transformed image to identify, based on edges detected within the transformed input image, a plurality of polygons corresponding to the physical notes within the input image;
• grouping, by the computing device, the plurality of polygons from the transformed image into a plurality of groups, each of the groups comprising one or more of the polygons and corresponding to different one of the physical notes;
• selecting, by the computing device, a representative one of the polygons from each of the plurality of groups for each respective physical note in the input image;
• creating, by the computing device, a plurality of digital notes, each of the digital notes representing a particular one of the physical notes;
• extracting, by the computing device and from the input image, a respective sub-image for each respective physical note based on the selected representative polygon for the respective physical note;
• and
• associating, by the computing device and in a database, the extracted sub-image for each respective physical note with a corresponding digital note of the plurality of digital notes that represents the respective physical note.

A computing device comprising:

• a processor;
• a note identification module executable on the processor and configured to:
• obtain an input image of an environment having a plurality of physical notes,
• separate the input image into a plurality of channelized input images, each of the channelized input images associated with a different color,
• apply edge detection and use detected edges to identify polygons within each of the channelized input images,
• select, based on the polygons from the channelized input images, a representative polygon for each of the physical notes in the input image;
• and
• a digital note generation module executable on the processor and configured to:
• create a plurality of digital notes, each of the digital notes representing a particular one of the physical notes,
• extract, from the input image, a respective sub-image for each respective physical note based on the selected representative polygon for the respective physical note, and
• associate, in a database, the extracted sub-image for each respective physical note with a corresponding digital note of the plurality of digital notes that represents the respective physical note.