International Symposium on VIPromCom Video/Image Processing and Multimedia Communications
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Các bài báo tiêu biểu
Blind watermarking method using partitioned DCT channels
- Trang 245-250
A novel blind watermarking method for 8 bit grayscale images in 8/spl times/8
block DCT (discrete cosine transform) domain is presented. The method is based
on an advanced spread-spectrum algorithm (see Cox, I.J. et al., NEC Research
Institute Technical Report p.95-100, 1995). However, instead of correlation
analysis in the detection phase, it extracts the difference between the
histogram properti...
#Watermarking #Discrete cosine transforms #Histograms #Gray-scale #Spread spectrum communication #Partitioning algorithms #National electric code #Writing #Phase detection #Security
Reverse probability density of channel utilisation as a grade-of-service indication
- Trang 391-395
The paper describes aspects of traffic levelling in a mobile network, and a
method for easy traffic load diagnostics, unaffected by traffic type or cell
resource changes.
#Telecommunication traffic #Binary search trees #Availability #Statistics #Optimization methods #Interference suppression #Uncertainty #Base stations #Region 8 #Image processing
A combinatorial edge detection algorithm on noisy images
- Trang 351-355
In this paper, we present an algorithm for edge detection in noisy images.
First, an image adaptive neighborhood hypergraph (IANH) representation is
computed. Next, a detection procedure based on hypergraph properties is used to
classify hyperedges either as noise, edges or region. The application of this
technique to noisy images has resulted in a considerable improvement in
performance as compar...
#Image edge detection #Computer vision #Filters #Surface fitting #Gaussian noise #Smoothing methods #Degradation #Image processing #Application software #Solid modeling
Unsupervised segmentation of textured color images using fuzzy homogeneity decision
- Trang 75-78
This paper proposes a fuzzy-based unsupervised segmentation of textured color
images. L*a*b* color space is used to represent color features and statistical
geometrical features (SGF) are adopted as texture descriptors. Homogeneity
decision is used to make a fusion of texture features and color features with
fuzzy-rule theory. Hierarchical segmentation based on the fuzzy homogeneity
decision is pe...
#Image segmentation #Color #Merging #Fuzzy systems #Computer science #Systems engineering and theory #User-generated content #Feature extraction #Region 8 #Image processing
Part-level object recognition
- Trang 339-344
This paper proposes a technique for object recognition using superquadric built
models. Superquadrics, which are three dimensional models suitable for
part-level representation of objects, are reconstructed from range images using
the recover- and-select paradigm. Using an interpretation tree, the presence of
an object in the scene from the model database can be hypothesized. These
hypotheses are ...
#Object recognition #Layout #Shape #Image segmentation #Computer vision #Information science #Laboratories #Image reconstruction #Image databases #Solids
Simulation of GEO satellite on LAN
- Trang 383-386
Satellite systems play significant task in the telecommunications
infrastructure. They can interconnect various remote geographical areas or
deliver multimedia services to many geographically dispersed and outlying
"islands". Unfortunately, the satellite systems suffer from some drawbacks which
influence data transmission. That is why it is necessary to simulate performance
of various current and ...
#Local area networks #Satellite broadcasting #Protocols #Internet #Artificial satellites #LAN interconnection #Military satellites #TCPIP #Data communication #Asynchronous transfer mode
Enabling multimedia services in unified access network
- Trang 25-30
Unified access to VPNs enables considerable flexibility in the way remote
locations connect to a VPN. The overall design goal of this approach requires
support for all services inherent to VPNs, including multimedia ones. The
classical approach to building VPNs, such as ATM or frame relay, can enable
strong support for multimedia traffic because of the ability to provide strict
QoS guarantees. The...
#Intelligent networks #Virtual private networks #Frame relay #Multiprotocol label switching #Streaming media #Buildings #Telecommunication traffic #Multicast protocols #Ground penetrating radar #Transport protocols
Adaptive transport protocol for broadband fixed-wireless systems
- Trang 397-400
New interactive multimedia services have increased the urgent requirement for
more bandwidth and turn broadband wireless technology as one of the most
competitive solutions for the last mile problem. This paper presents an adaptive
transport protocol design and evaluation for a multicarrier point-to-multipoint
outdoor broadband wireless access system, in the 5.8 GHz and 10.5 GHz frequency
bands. W...
#Transport protocols #Downlink #Bandwidth #Quality of service #Multimedia communication #Broadcasting #Frequency conversion #Access protocols #Modulation coding #Time division multiple access
Đơn vị nén/giải nén video sóng đơn bản Dịch bởi AI
- Trang 99-104
Hệ thống được mô tả dựa trên phương pháp nén/giải nén video bằng sóng, được
triển khai trên một bảng đơn và được điều chỉnh cho công việc thời gian thực. Hệ
thống hỗ trợ các tốc độ bit khác nhau trong chế độ full-duplex và trong phạm vi
từ 8-50 Mbit/s. Giải pháp cụ thể cho chuyển giao DMA nội bộ giữa bộ nén/bộ giải
nén và các bộ đệm FIFO truyền tải được mô tả. Một số cân nhắc về việc triển khai
tố...
#Nén video #Lập trình hình ảnh #Phương tiện truyền phát #Điều khiển hệ thống truyền thông #Phân tích sóng #Biến đổi cosine rời rạc #Bộ mã video #Xử lý tín hiệu số #Hiện tượng số đồng bộ #Lập mã biến đổi
Complex genomic signals
- Trang 19-24
An original tetrahedral representation of the genetic code (GC) is presented. It
is shown that the dimensionality of the genomic signal representation can be
reduced by projecting the genetic code tetrahedron on an adequately oriented
plane, leading to the complex representations of the GC. On these bases, optimal
symbolic-to-digital mappings of the linear, one-dimensional and one-directional
stra...
#Genomics #Bioinformatics #Genetics #Signal representations #Lead compounds #Signal mapping #Amino acids #Signal processing #Digital signal processing #Signal analysis