US Patent No. 9,082,184

NOTE RECOGNITION AND MANAGEMENT USING MULTI-COLOR CHANNEL NON-MARKER DETECTION


Patent No. 9,082,184
Issue Date July 14, 2015
Title Note Recognition And Management Using Multi-color Channel Non-marker Detection
Inventorship Pontus Axelsson, Stockholm (SE)
Roland Persson, Stockholm (SE)
Emre Berge Ergenekon, Solna (SE)
Assignee 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)

Claim of US Patent No. 9,082,184

1. A method comprising:
receiving, by a computing device, an input image of an environment having a plurality of physical notes;
separating, by the computing device, the input image into a plurality of channelized input images, each of the channelized
input images associated with a different color;

generating, by the computing device, a plurality of transformed channelized input images by applying edge detection to each
of the plurality of channelized input images;

processing, by the computing device, the plurality of transformed channelized input images to identify, based on edges detected
within the transformed channelized input images, a plurality of polygons corresponding to the physical notes within the input
image;

grouping, by the computing device, the plurality of polygons from the plurality of transformed channelized input images 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; and

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.