IEEE Transactions on Circuits and Systems for Video Technology

Vision-based human identification at a distance has recently gained growing interest from computer vision researchers. This paper describes a human recognition algorithm by combining static and dynamic body biometrics. For each sequence involving a walker, temporal pose changes of the segmented moving silhouettes are represented as an associated sequence of complex vector configurations and are th... View full abstract»

We present in this paper a vision-based approach to detection of drowning incidents in swimming pools at the earliest possible stage. The proposed approach consists of two main parts: a vision component which can reliably detect and track swimmers in spite of large scene variations of monitored pool areas, and an event-inference module which parses observation sequences of swimmer features for pos... View full abstract»

Research into tracking and recognizing human movement has so far been mostly limited to gait or frontal posing. Part I of this paper presents a continuous human movement recognition (CHMR) framework which forms a basis for the general biometric analysis of continuous human motion as demonstrated through tracking and recognition of hundreds of skills from gait to twisting saltos. Part II of this pa... View full abstract»

Biometric authentication of gait, anthropometric data, human activities, and movement disorders are presented in this paper using the continuous human movement recognition (CHMR) framework introduced in Part I. A novel biometric authentication of anthropometric data is presented based on the realization that no one is average-sized in as many as ten dimensions. These body part dimensions are quant... View full abstract»

A novel approach to personal verification using the thermal images of palm-dorsa vein patterns is presented in this paper. The characteristics of the proposed method are that no prior knowledge about the objects is necessary and the parameters can be set automatically. In our work, an infrared (IR) camera is adopted as the input device to capture the thermal images of the palm-dorsa. In the propos... View full abstract»

In many biometric pattern-recognition problems, the number of training examples per class is limited, and consequently the sample group covariance matrices often used in parametric and nonparametric Bayesian classifiers are poorly estimated or singular. Thus, a considerable amount of effort has been devoted to the design of other covariance estimators, for use in limited-sample and high-dimensiona... View full abstract»

The multivariate polynomial model provides an effective way to describe complex nonlinear input-output relationships since it is tractable for optimization, sensitivity analysis, and prediction of confidence intervals. However, for high-dimensional and high-order problems, multivariate polynomial regression becomes impractical due to its huge number of product terms. This is especially true for th... View full abstract»

Automatic personal identification is a significant component of security systems with many challenges and practical applications. The advances in biometric technology have led to the very rapid growth in identity authentication. This paper presents a new approach to personal identification using palmprints. To tackle the key issues such as feature extraction, representation, indexing, similarity m... View full abstract»

The International Standards Organization (ISO) has proposed a family of standards for compression of image and video sequences, including the JPEG, MPEG-1, and MPEG-2. The latest MPEG-4 standard has many new dimensions to coding and manipulation of visual content. A video sequence usually contains a background object and many foreground objects. Portions of this background may not be visible in ce... View full abstract»

A solution for Internet video streaming with two major components is examined in this paper. First, a new rate adaptation mechanism called the smooth and fast rate adaptation mechanism (SFRAM) is developed based on the transmission control protocol (TCP) throughput equation. SFRAM not only achieves TCP-friendliness but also provides a smooth and fast rate adaptation for transmitted video. By adapt... View full abstract»

The design of a novel, CMOS-liquid-crystal-based image transceiver device (ITD) is described. The device combines both functions of imaging and display by means of a dual-function array formed in a single-processed chip. The image transceiver system design allows the integration of the see-through, aiming, imaging, and display of a superposed image into a single, compact, head-mounted goggle. The ... View full abstract»

Image resizing of a compressed image can be performed in a spatial domain via decompression, resizing, and recompression, which is computationally inefficient. In order to reduce computation amount, efficient resizing approaches in the compressed domain have been developed. In this paper, we propose a novel approach to resize images that are compressed by 8 /spl times/ 8 block-discrete cosine tran... View full abstract»