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Research Interests
The goals of our research activities are to overcome barriers to pervasive media delivery through the
development of algorithms, tools, and techniques for content and resource adaptation.
Our approach considers the content, the sender, the network, and the receiver in
determining the appliable adaptability of a content delivery session.
MPEG-2 to H.264 Video Transcoding
The wide use of the MPEG-2 video today and the expected adoption of H.264 creates a need for tools and
techniques for MPEG-2 to H.264 video transcoding. We are developing a transcoder that uses the
MPEG-2 MB modes, DCT coefficients, and motion vectors, for direct estimation of H.264 coding modes
and prediction modes for inter and intra MBs.
Power Aware Video Coding
In this project we are developing methodologies and tools to estimate the power consumption due to video
playback on a given architecture. Metrics based on bitstream characteristics are developed to estimate power
consumption. The other side of this problem is understanding how the encoding algorithm (encoding tools)
influence the decoder complexity and resource consumption. We are developing complexity descriptors to describe
bitstream complexity and enable resource adaptive coding.
Coastline Security
The goal of this project is to analyze quad-HDTV resolution video in realtime for
potential objects of interest.Our current approach combines an existing foreground object detection
method with an image color segmentation technique to improve accuracy. The foreground segmentation method
employs a Bayesian decision framework, while the color segmentation part is graph-based and relies on the
local variation of edges.
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:: Bio ::
Dr. Kalva joined the
Department of Computer Science and Engineering at Florida Atlantic University as an
Assistant Professor in August 2003. Prior to that he was
a consultant with Mitsubishi
Electric Research Labs, Cambridge, MA, where he
worked different projects including MPEG-2 to MPEG-4
realtime video transcoding. He was a co-founder and the
Vice President of Engineering of Flavor Software, a New York company
founded in 1999, that developed MPEG-4 based solutions
for the media and entertainment industry. Dr. Kalva is
an expert on digital audio-visual communications systems
with over ten years of experience in multimedia
research, development, and standardization. He has made
key contributions to the MPEG-4
Systems standard and also contributed to the
DAVIC standards development. His research interests
include pervasive media delivery, content adaptation, video compression, and
communication.
Dr. Kalva's publication record includes 16 journal papers, 43 conference papers,
7 patents issued (9 patents pending), 1 book, and 6 book chapters.
Dr. Kalva received a Ph.D. and an M.Phil. in
Electrical Engineering from Columbia
University in 2000 and 1999 respectively. He
received an M.S. in Computer Engineering from Florida Atlantic University in
1994, and a B. Tech. in Electronics and Communications
Engineering from N.B.K.R. Institute
of Science and Technology, S.V. University,
Tirupati, India in 1991.
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