Haruhiko Kojima

Telop-on-demand: video structuring and retrieval based on text recognition

The paper presents a telop-on-demand system that anatomically recognizes texts in video frames to create the indices needed for content based video browsing and retrieval. Superimposed texts are important as they provide semantic information about scene contents. Their attributes such as fonts, size, and position in a frame are important as they are carefully designed by the video editor and so reflect the intent of captioning. In news programs, for instance, the headline text is displayed in larger fonts than the subtitles. Our system takes into account not only the texts themselves but also their attributes for structuring videos. We describe: (i) novel methods for detecting and extracting texts that are robust against the presence of complex backgrounds and intensity degradation of the character patterns, and (ii) a method for structuring a video based on the text attributes.

Visual communication system in an apartment house using fiber optics

A visual communication system for an apartment house where fiber optics is used is presented. It offers a variety of services such as video mail, camera door phones, and video telephones in the apartment house. This system is mainly composed of three parts: digital loop network and analog video bus, apartment house controller, and apartment outlets. The system design, the call control procedures, and several examples of visual services offered by this system are described. >

A smart TV viewing and Web access interface based on video indexing techniques

We propose JoyTV, an advanced TV viewing PC software application. It automatically detects scene changes and music, and recognizes superimposed texts in TV broadcasts. It also links TV contents and Web sites using image features. JoyTV provides users with a smart TV viewing interface based on these video indexes.

Visual communication system in closed areas using an extended ISDN protocol

This paper describes a visual communication system for enclosed areas such as multi-dwellings and/or office buildings where fiber optics are wired. The system has an ISDN primary rate interface and provides unrestricted sound and video services at no charge. This paper presents the improvements upon our previous system, system configuration, service functions and transmission control methods. >