Hee-Don Yoon

A Study of Performance Evaluation Standard for Scanned Cartoon Book Identification Technology

In order to identify scanned cartoon books which are illegally distributed, the copyright project granted from the Korea Copyright Commission (Project title: Identification and Copy Protection Technology of Scanned Text/Comic Books) secured basic solutions for scanned cartoon books. The purpose of this paper is to propose a performance evaluation standard with essential items required for developing technology to identify whether a comic book is illegally scanned and distributed. For this purpose, types of scanned comic books which are illegally distributed through webhard sites are analysed, the transformed factors are classified and major detail items of the factors are identified.

A Study on Identification System for Abnormally Scanned Cartoon Books

In order to solve the problems that fingerprinting technologies and image identification technologies for digital music and videos identification scanned have not yet been enough to identify scanned cartoon books, the copyright project granted from the Korea Copyright Commission(Project title: Identification and Copy Protection Technology of Scanned Text/Comic Books) secured basic solutions for scanned cartoon books. The first result of the research project in 2013 was focused on the identification technology applied to abnormally scanned cartoon books. As subsequent research for the project, studies in the year of 2014 has been to provide solutions to identify cartoon books which abnormally scanned and occurred with transformations and distortions and solutions to protect the system from trials to devitalize functions of the identification system through various attacks. This paper is to propose a model for a system for identifying abnormally scanned cartoon books as a way of enhancing the identification rates for identifying abnormal bookscans and transformation attacks.

A Study on Integrated Identification System of Scanned Cartoons and Copyrighted Books

This study aims to develop sound ecosystem of scanned cartoons and books through the effective identification technology developed as a part of the project granted from the Korea Copyright Commission (Project title: Identification and Copy Protection Technology of Scanned Text/Comic Books). This study shows a model integrating the scanned book identification system with the existing system that identifies scanned cartoons. The model suggested in this study is expected to give a help in reducing the author`s damages due to the indiscriminate illegal reproduction, which tends to expand with high quality scanners and editing softwares.

A Study on eBook DRM interoperability based on IDPF Readium SDK

In order to secure the compatibility of eBook viewers based on EPUB 3.0, IDPF launched an open project of Readium in February 2012, which supports the standard platform for eBook viewers and the related SDK that can be implemented on different OSs. The current EPUB standard, however, does not provide DRM standards to protect eBook copyrights. Therefore, the compatibility of Readium SDK cannot be secured. Even though the Readium project has tried to design a standard reference software in order to apply DRM independently of EPUB standards, it still does not definitely solve compatibility problems of plural DRMs. This paper suggests a compatibility model based on Readium SDK and ContentMudule technology, in which eBook viewers can work together with plural DRM technology.

A Scalable Quality Service Scheme of JPEG2000 for DRM System

In general DRM (digital right management) system, contents providers give us a preview which gives some brief comments on the full story. So, users must pay for the license to get the full content if they want to obtain it. For searching and confirming the contents, users can only use thumb-nail images of low resolution which is not enough to confirm the good contents and quality to buy them. So, to get the best quality image users must pay for the license and download the full image from DRM contents server with the purchased license. The purpose of our scheme is to provide the image of the low-quality with a conventional image decoder without pay for license. At the same time, we can get the full quality with a DRM decoder in a same file. In this paper, we propose a new scheme which obtains a full quality image without downloading a same content again. It can provide a low-quality and high-quality parts within one image file. This scheme reconstructs an original file: a low-quality part and a high quality part. Both of parts are stored in a reorganized image file. Therefore, our scheme does not need to make a thumb-nail for an original image.

Enhanced Slow CW Decrease using Idle and Collision Time Ratio

In DCF when a station succeeds to transmit a packet, it resets its CW to its minimum value. A successful transmission does not mean a congestion level decrease, but a CW value convenient. It can cause to make other collisions. So, the CW value should be kept the same as long as the congestion level remains the same. Slow CW decrease (SD) scheme provides the method which keeps the congestion level. In this paper, we propose Enhanced SD scheme using idle and collision time ratio (ICR). It uses idle and collision time ratio as decision factor of stage movement.