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
Speckle suppression by adaptive nonlinear filtering
- Trang 163-166
Using a good statistical model of speckle formation is important in designing an
adaptive filter for speckle reduction in ultrasound B-scan images. Most clinical
ultrasound imaging systems use a nonlinear logarithmic function to reduce the
dynamic range of the input echo signal and emphasize objects with weak
backscatter. The statistic of log-compressed images for Nakagami distribution
was derived...
#Speckle #Adaptive filters #Ultrasonic imaging #Filtering #Dynamic range #Backscatter #Statistical distributions #Nakagami distribution #Nonlinear filters #Liver
On "slant-like" fast orthogonal transforms of arbitrary order
- Trang 309-314
A concept for the construction of fast orthogonal transforms with matrices
containing one or more predefined rows is proposed. In particular, two new
families of "slant-like" transforms with matrices of arbitrary orders, including
a constant row and a slant row of arbitrary slanting angle, are introduced.
Transforms from these families may be computed with fast regular algorithms
suitable for para...
#Discrete transforms #Sparse matrices #Discrete Fourier transforms #Fourier transforms #Very large scale integration #Image coding #Informatics #Automation #Concurrent computing #Computer architecture
Use of area-closing to improve granulometry performance
- Trang 303-308
We present a new procedure for computing the granulometry function. Computation
of granulometry is normally done by morphological opening/closing performed on
an image with structuring elements of increasing size. This can pose problems,
if pixels within the image components are not nearly uniform gray level (or have
large variations) or if there are patches within the objects of interest. The
pro...
#Shape #Red blood cells #Diseases #Image processing #Cells (biology) #Morphology #Object detection #Humans #Visual system #Image recognition
Embedding indexing information in audio signal using watermarking technique
- Trang 257-261
We propose a watermarking scheme applied to digital audio signals. The goal of
the project is to hide information which can identify both the tracks and the
user who requests them. This technique is used for automatic identification of
audio signals in broadcast programs. There are two main features that have to be
satisfied: inaudibility and robustness to common editing operations. The
algorithm ...
#Indexing #Watermarking #Robustness #Error correction codes #Frequency domain analysis #Error probability #Multimedia communication #Signal processing #Digital audio broadcasting #Spread spectrum communication
Các công nghệ đa phương tiện hiện tại có đủ tốt cho các ứng dụng trong môi trường công nghiệp? Dịch bởi AI
- Trang 105-110
Bài báo này thảo luận về một số lợi ích của việc sử dụng hệ thống đa phương tiện
để truyền tải một loạt thông tin đa dạng trong môi trường sản xuất. Các công
nghệ đa phương tiện cho phép người dùng truy cập có kiểm soát vào thông tin cần
thiết trong một loạt các ứng dụng, theo cách dễ dàng truy cập và có cấu trúc,
thông qua việc sử dụng một hệ thống cung cấp thông tin bảo trì và quy trình trên
sàn...
#Multimedia systems #Multimedia databases #Automatic control #Condition monitoring #Electrical equipment industry #Manufacturing industries #Pulp manufacturing #Control systems #Production facilities #Manufacturing automation
Fast and robust shadow detection in videoconference applications
- Trang 371-375
A new approach for real-time shadow detection and elimination is presented. In
contrast to existing methods, hue and saturation is approximated in the
YUV-colour space straight away. We show the linear influence of shadow to the
YUV-values and exploit this behaviour in a fast decision scheme. The proposed
method is robust and capable for real-time video processing without any need of
colour space ...
#Robustness #Videoconference #Image processing #Object detection #Image segmentation #Color #Video sequences #Computer vision #Application software #Video surveillance
Using fractal dimension for cancer diagnosis
- Trang 173-176
The paper presents an algorithm able to compute and to display the graphic of
the distribution of fractal dimensions obtained from microscopic images of
malignant tumors in various stages of evolution. Some considerations on the
medical interpretation of these histograms are offered too.
#Cancer #Fractals #Computer displays #Distributed computing #Graphics #Microscopy #Malignant tumors #Biomedical imaging #Medical diagnostic imaging #Histograms
Face recognition using a similarity-based measure in image database for crime investigation
- Trang 87-92
A method to handle searching a face image database (FID) is proposed to support
police officers when searching criminal records from a central registration
database system (CRDS). The proposed method assumes that each FID consists of a
fixable object and object correlation. The proposed method employs a database
search, so that all images with a similarity-based measure are retrieved.
Consequently...
#Face recognition #Image databases #Pixel #Image retrieval #Image storage #Information retrieval #Eyebrows #Size measurement #Ear #Informatics
Computer platform for evaluation of stereo image algorithms
- Trang 407-410
The paper presents an image processing software platform for implementation and
evaluation of different stereo algorithms. It constitutes a self-contained image
evaluation and testing platform, but also it can be used as a library that can
be a part of a bigger image processing software. Thanks to its flexible and
object oriented design it can be easily extended to comprise any new area or
feature...
#Image processing #Image storage #Testing #Software algorithms #Operating systems #Software reusability #Image representation #Digital images #Computer science #Electronic mail