Yayati Kasralikar

This article describes our experiences with developing a browser-based Web conferencing application with the following constraints: HTTP protocol (port 80) to broadcast and receive video/audio Broadcasters and receivers are not required to have public IP addresses Multiple users, each capable of broadcasting to and receiving feeds from many users Low-cost solution for continuous video/audio feed Java Media Framework (JMF) is used to develop the browser-based Web conferencing application. In this architecture, the client uses two JMF applets - one for capturing video/audio from a Webcam and the other for playing video/audio feed. The capture applet continuously captures video/audio feed for a specified length of time (e.g., 10 seconds) and saves it locally in a file. This file is uploaded to a Web server using an upload servlet. The media stream is stored in MSVIDEO ... (more)

Model-View-Controller based Plug-able Declarative Framework

A Model-View-Controller based Plug-able Declarative Framework (MVC-PDF) will be described, in which developers use the full power of ColdFusion MX (CFMX) components to create MVC applications. The declarative nature of the framework will allow the controller and the model to be specified declaratively in configuration files, versus custom coded in ColdFusion. A MVC-PDF will allow developers in a team to write no ColdFusion components; instead, these developers will code the business logic in controller and model XML configuration files. The pluggable nature of the framework will ... (more)

Medical Image Conversion

In this article we'll discuss the conversion of image formats using Sun's Java Image I/O (ImageIO) and the NIH ImageJ APIs. The image formats of interest are DICOM, JPEG 2000, PNG, and TIFF. These formats are widely used in medical applications; however, most of the disciplines in medicine are standardizing on DICOM. A single API, ImageIO or ImageJ, supports the reading and writing of limited image formats. We'll describe the use of these two APIs to support the reading and writing of a larger number of image formats as well as the process of extracting rich metadata from DICOM f... (more)