How small should a document thumbnail be?

Kathrin Berkner

doi:10.1117/12.641725

10 February 2006 How small should a document thumbnail be?

Kathrin Berkner

Proceedings Volume 6076, Digital Publishing; 60760G (2006) https://doi.org/10.1117/12.641725
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Viewing document images on small devices is a challenge. When showing a region of a page for reading on a small display a page overview is generally lost. If a page overview is desired, typically a low resolution version of the image fitting a small array of pixels - a thumbnail - is provided. Whereas the readability of text in thumbnails is often lost, document layout information may or may not be preserved. Preserving document layout information in thumbnails is the goal of this paper. We derive models for controlling the preservation of document layout information in thumbnails by determining the size of a thumbnail depending on the layout content of the document. The downsampling factor for a document image will depend on its layout information, such that layout units will be visually separate after scaling. The link between scaling factors and document layout information is created through novel models, White Space Graphs and White Space Trees. These models enable control over enhancement and suppression of document layout structures during scaling. Minimal scaling factors can be derived that assure visual separability of a controlled set of layout units after scaling. Those scaling factors depends on the document content as well as user and display specifications.

Citation Download Citation

Kathrin Berkner "How small should a document thumbnail be?", Proc. SPIE 6076, Digital Publishing, 60760G (10 February 2006); https://doi.org/10.1117/12.641725

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available