International Symposium on VIPromCom Video/Image Processing and Multimedia Communications
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DVB-MHP transport stream generator
- Trang 453-456
We present superficially a software tool - a DVB-MHP (digital video broadcasting multimedia home platform) compliant transport stream generator /sub e/signed to be part of the testbed of an MHP decoder prototype. The tool was implemented partially making use of XML technology and the software reuse philosophy (freely-distributed parsers and tools) that, in a sense, goes with this special syntax.
#Digital video broadcasting #US Department of Transportation #Streaming media #Decoding #Digital TV #Software tools #XML #TV broadcasting #TV receivers #Signal processing
Combating geometrical attacks in a DWT based blind video watermarking system
- Trang 263-266
This paper describes a high capacity blind video watermarking system invariant to geometrical attacks such as shift, rotation, scaling and cropping. A spatial domain reference watermark is used to obtain invariance to geometric attacks by employing image registration techniques to determine and invert the attacks. A second, high capacity watermark, which carries the data payload, is embedded in th......
#Discrete wavelet transforms #Watermarking #Image registration #Payloads #Wavelet domain #Humans #Visual system #Protection #Error correction codes #Turbo codes
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
Performance of the all-optical packet switch in the WAN and MAN networks
- Trang 387-390
In this paper, we provide a simulation-based study on the performance of the synchronous all-optical packet switch especially the impact of the contention resolution mechanism on the PLR in the synchronous all-optical network.
#Packet switching #Intelligent networks #Wide area networks #Optical switches #Optical network units #Optical packet switching #All-optical networks #Payloads #Optical feedback #Optical fiber networks
Color-space analysis for facial feature detection
- Trang 83-86
Facial feature detection is an important preprocessing step used in facial image processing. Most of the image-based facial feature detection techniques use only the luminance information ignoring the color information of the images. We introduce a method of adding color-space information to the principal component analysis (PCA) based eigen features technique. The experimental results show that t......
#Facial features #Face detection #Detectors #Principal component analysis #Image processing #Eigenvalues and eigenfunctions #Face recognition #Pixel #Vectors #Application software
JPEG 2000
- Trang 1-6
JPEG 2000 Part I which has become an international standard (IS) in December 2000 is reviewed. Parts II to VII relating to extensions, motion JPEG 2000, conformance, reference software, file format and technical report are in various stages of development with IS targeted for the year 2001. JPEG 2000 focuses on efficient coding of grey level and binary still images (compound documents, text, annot......
#Image coding #Data compression
A fast object detection algorithm using motion-based region of interest determination
- Trang 319-324
We present a fast algorithm for achieving motion-based object detection in an image sequence. While in most existing object-detection algorithms, segmentation of the image is done as the first step followed by grouping of segments, the proposed algorithm first uses motion information to identify what we call a region of interest. Segmentation (which is computationally very expensive) is done only ......
#Object detection #Image segmentation #Surface topography #Image sequences #Motion estimation #Pixel #Shape #Tracking #Video coding #Motion detection
The design and implementation of a Chinese financial invoice recognition system
- Trang 79-82
This paper designs and implements a financial invoice recognition system based on the features of the Chinese financial invoice. By using the linear whole block moving method in each vertical segment, a new fast algorithm is put forward to detect and rectify slanted images. To distinguish the different form types (the foundation necessary for locating the form fields, filtering the form lines, etc......
#Character recognition #Optical character recognition software #Image recognition #Image segmentation #Image processing #Pattern recognition #High speed optical techniques #Optical filters #System testing #Laboratories
Another generalisation of vector filters
- Trang 273-278
A new generalisation of vector filters utilising the ordering of vector samples is provided. According to a distance function based on vector distances and vector angles, it is possible to differentiate vector median filters (VMFs), vector directional filters (VDFs) and finally directional distance filters (DDFs) that combine both distance and angles of vector samples in the vector space. For that......
#Filters #Color #Colored noise #Image processing #Multimedia communication #Electronic mail #Filtering algorithms #Estimation error #Noise robustness #Brightness
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