Your Way of Finding Text on Printed Medium

1
Your Way of Finding Text on Printed Medium
FindIT!
D. Kwok, S. Luu, M. Xie, W. Zhang Group
2006.001 Consultant Dr. Paul Fieguth
Step-by-Step Intermediate Output Images
Block Diagram
The Problem
Often very difficult for human to find specific
words on pages of printed text
The Solution

• Camera continuously takes images of the page
• Software looks for the user-specified search word
• Display directs the users gaze to location of
  the found search word

Back End (Software)
The Challenge
How Line Grouping works

• Finding and matching words in an image
• Calibrate location of word to users field of view

The center y values of each cluster give
information about line bounds
The Alternative

• Scan ? OCR ? CTRLF Search
• Slow and tedious.
• Requires additional work.
• Unnatural.
• FindIT
• REAL-TIME, EASY TO USE!

Word Search Test Results
The relationship between correct and incorrect
hits give information about confidence threshold

• N. Otsu, "A threshold selection method from
  gray-level histograms. IEEE Transactions, 1979.
• Lode Vandevenne, Lode's Computer Graphics
  Tutorial - Flood Fill. 2004.
• ImageMagick Convert, Edit, and Compose Images
  ImageMagick Studio LLC. 2005
• Epson Canada Ltd. (The printing of this poster)