FontCode: Embedding Information in Text Documents using Glyph Perturbation

07/28/2017
by   Chang Xiao, et al.
0

We introduce FontCode, an information embedding technique for text documents. Provided a text document with specific fonts, our method embeds user-specified information in the text by perturbing the glyphs of text characters while preserving the text content. We devise an algorithm to chooses unobtrusive yet machine-recognizable glyph perturbations, leveraging a recently developed generative model that alters the glyphs of each character continuously on a font manifold. We then introduce an algorithm that embeds a user-provided message in the text document and produces an encoded document whose appearance is minimally perturbed from the original document. We also present a glyph recognition method that recovers the embedded information from an encoded document stored as a vector graphic or pixel image, or even on a printed paper. In addition, we introduce a new error-correction coding scheme that rectifies a certain number of recognition errors. Lastly, we demonstrate that our technique enables a wide array of applications, using it as a text document metadata holder, an unobtrusive optical barcode, a cryptographic message embedding scheme, and a text document signature.

READ FULL TEXT

page 1

page 5

page 6

page 9

page 12

page 13

research
03/29/2018

High Capacity Image Data Hiding of Scanned Text Documents Using Improved Quadtree

In this paper, an effective method was introduced to steganography of te...
research
03/07/2015

An Improved Image Mosaicing Algorithm for Damaged Documents

It is a common phenomenon in day to day life; where in some of the docum...
research
10/14/2022

Text Detection Forgot About Document OCR

Detection and recognition of text from scans and other images, commonly ...
research
12/02/2016

Recognition of Text Image Using Multilayer Perceptron

The biggest challenge in the field of image processing is to recognize d...
research
09/11/2015

OCR accuracy improvement on document images through a novel pre-processing approach

Digital camera and mobile document image acquisition are new trends aris...
research
08/05/2020

Can You Read Me Now? Content Aware Rectification using Angle Supervision

The ubiquity of smartphone cameras has led to more and more documents be...
research
01/27/2017

Document Decomposition of Bangla Printed Text

Today all kind of information is getting digitized and along with all th...

Please sign up or login with your details

Forgot password? Click here to reset