USER FEEDBACK FOR REAL-TIME CHECKING AND IMPROVING QUALITY OF SCANNED IMAGE

摘要

A smartphone may be freely moved in three dimensions as it captures a stream of images of an object. Multiple image frames may be captured in different orientations and distances from the object and combined into a composite image representing an image of the object. The image frames may be formed into the composite image based on representing features of each image frame as a set of points in a three dimensional point cloud. Inconsistencies between the image frames may be adjusted when projecting respective points in the point cloud into the composite image. Quality of the image frames may be improved by processing the image frames to correct errors. Reflections and shadows may be detected and removed. Further, optical character recognition may be applied. As the scan progresses, a direction for capturing subsequent image frames is provided to a user as a real-time feedback.

主权项

1. A method of forming a composite image from a plurality of image frames of a scene acquired using a portable electronic device associated with a user interface, the method comprising:
sequentially processing image frames of the plurality of image frames by, for a processed image frame, incorporating the processed image frame to a representation of the composite image; analyzing content of the representation of the composite image while image frames of the plurality of image frames are being processed; based on the analysis, determining at least one corrective action to improve the quality of the composite image; and generating feedback to adjust incorporation of successive image frames of the plurality of image frames in accordance with the corrective action.