Systems and Methods for Efficiently Capturing High-Quality Scans of Multi-Page Documents with Hand-Held Devices

摘要

Capturing a sequence of images of a multi-page printed document is performed by a handheld device, such as a Smartphone. The device has one or more processors, memory, and a digital image sensor. The device monitors preview images of a first printed page of the multi-page printed document, where the preview images are generated by the digital image sensor. Without user indication of when to capture an image, the device captures a still image of the first printed page when a first quality metric of the preview images exceeds a first quality threshold. The device repeats the monitoring and capturing of additional pages until receiving indication from the user that capturing images is complete. In response to receiving indication from the user that capturing images is complete, the device concatenates the captured still images into a single digital document and stores the single digital document.

主权项

1. A method of capturing a sequence of images of a multi-page printed document, performed by a handheld device with one or more processors, memory, and a digital image sensor, the method comprising:
monitoring preview images of a first printed page of the multi-page printed document, the preview images generated by the digital image sensor; without user indication of when to capture an image, capturing a still image of the first printed page when a first quality metric of the preview images exceeds a first quality threshold; repeating the monitoring and capturing of additional pages of the multi-page printed document until receiving indication from the user that capturing images is complete; and in response to receiving indication from the user that capturing images is complete:
concatenating the captured still images into a single digital document; andstoring the single digital document.