Cryptography Reference
In-Depth Information
of print-to-web linking technology and their applications in Japan in recent
years.
Section 10.2 presents a brief overview of techniques and applications for
print-to-web linking technology using mobile phone camera. Section 10.3 in-
troduces the inputting methods, traditional methods of print-to-web link-
ing technology using a mobile phone. Section 10.4 introduces readable code
methods, and general methods of print-to-web linking technology using mobile
phone camera. Section 10.5 and Section 10.6 introduce watermarking methods
and recognition methods respectively. These are the most attractive and chal-
lenging topics in the applications of print-to-web linking technology using a
mobile phone camera. Section 10.7 introduces the applications of print-to-web
linking technology using a mobile phone camera recently in Japan. Finally,
some discussions and conclusions are given in Section 10.8.
10.2 Print-to-Web Linking Technology
Section 10.1 describes print-to-web linking technology using a mobile phone
camera. This is a new technique which allows users to link from the printed
image to a related website instantly where they can get more information.
This is done by taking a photograph using a mobile phone camera. One can
ask how does it work and what kind of applications can it serve? In this section
we will give a brief answer to these questions.
10.2.1 System of Print-to-Web Linking Technology
There are basically two kinds of service system using print-to-web linking
technology include a mobile phone camera. They may be categorized as those
without and those with a retrieve server which is used to retrieve website
URLs.
The System Without a Retrieve Server
As shown in Fig. 10.1, a system of print-to-web linking technology using a
mobile phone camera without a retrieve server operates using the following
steps:
Step 1: Editing the information about the URL of a website using sample
pages from print media that can be done using the following methods.
(1) Embedding the information as watermark into a sample image
and then printing the image on paper.
(2) Embedding the information into a bar code and then printing the
bar code with the images on paper.
