A semi-automatic groundtruthing tool for mobile-captured document segmentation

This paper presents a novel way to generate ground-truth data for the evaluation of mobile document capture systems, focusing on the first stage of the image processing pipeline involved: document object detection and segmentation in low-quality preview frames. We introduce and describe a simple, robust and fast technique based on color markers which enables a semi-automated annotation of page corners. We also detail a technique for marker removal. Methods and tools presented in the paper were successfully used to annotate, in few hours, 24889 frames in 150 video files for the smartDOC competition at ICDAR 2015.