International Symposium on VIPromCom Video/Image Processing and Multimedia Communications
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Các bài báo tiêu biểu
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
An approach to directional wavelet construction and their use for image compression
- Trang 201-204
In this paper we construct a new type of directional wavelet transform based on the lifting scheme and quincunx sampling. Based on known separable wavelet predictors we build nonseparable 2D wavelet predictors with directional properties. As example we use the resulting wavelet transform for image compression for motion blurred images.
#Image coding #Wavelet transforms #Lattices #Filter bank #Image sampling #Digital signal processing #Signal processing algorithms #Frequency #Information technology #Signal sampling
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
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
Implementing digital video into time line based authoring environments
- Trang 427-430
In the paper we discuss and present a multimedia tutorial covering approaches in digital video implementation into an authoring tool based on time line authoring. First a short overview of the authoring approaches is presented in the introduction. Then, briefly some technological aspects of analog and digital video are discussed The main topic is discussed afterwards based on the time line authori......
#Video compression #Video sharing #Motion pictures #Multimedia systems #Displays #Sprites (computer) #Image coding #Computer science #Engines #Graphics
Experimental results on visibility threshold in human visual perception for application in image/video coding and quality assessment
- Trang 141-146
In assessment of image quality, as well as in image coding, end users are human beings. They need some type of image for work or entertainment. So it is logical to pursuit the goal of achieving better image quality by investigating what is better to human eyes. This paper is a contribution in that direction. Just-noticeable distortion and some aspects of it are discussed and experimental results o......
#Humans #Visual perception #Spatial resolution #Eyes #Image coding #Image quality #Image resolution #Distortion #Telemedicine #Quality assessment
Robust generation of 360/spl deg/ panoramic views from consumer video sequences
- Trang 431-435
This paper presents an algorithm for generation of 360/spl deg/ panoramic views from consumer video sequences. The robust approach considers the limited quality and the various distortions that such material usually contains. In a first stage the focal length of the camera is estimated from estimated warping parameters of the planar perspective motion model. Then the images are projected onto a cy......
#Robustness #Video sequences #Cameras #Motion estimation #Layout #Navigation #Displays #Image coding #Lightning #Parameter estimation
A drift compensation architecture for DCT-pyramid video coding
- Trang 315-318
A new-layered video coding scheme is proposed for efficient spatial scalability based on the DCT pyramid. The proposed scheme is introduced to eliminate the drift error associated with reduced resolution video. A new algorithm to predict the motion vector of the reduced resolution video from the higher resolution motion vectors is presented. Based on simulation results, the proposed scheme achieve......
#Video coding #Discrete cosine transforms #Scalability #Spatial resolution #Bit rate #Motion compensation #Frequency #Video compression #Bandwidth #Decoding
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