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In order to solve the problem that Omni-directional faces, which was in images with complex context, couldn't be detected, an eye-core based face detection model was proposed. In the proposed model, the technique of HSI based skin detection combined with eye-core detection was used to detect eyes, and then image rotation, features extraction from images and neural network based classification were...
Human detection based on spectral information is required for various applications, e.g. surveillance, tracking and missing person investigation. In practice, spectral human detection encounters the inherent challenge, i.e. multiple targets detection based on a limited number of spectral bands, because (1) there is a great variety in spectral profiles among various human-related materials, e.g. skin,...
We propose a method that relies on markerless visual observations to track the full articulation of two hands that interact with each-other in a complex, unconstrained manner. We formulate this as an optimization problem whose 54-dimensional parameter space represents all possible configurations of two hands, each represented as a kinematic structure with 26 Degrees of Freedom (DoFs). To solve this...
The behaviour of skin is still not well understood and characterising skin properties is always challenging due to its complex biological structure. Nevertheless, this paper highlights the success of determining skin material parameters using Ogden's model and finite element (FE) simulation. The approach involved integrating experiment, FE modelling and inverse-FE analysis. Data from in vivo experiments...
It is crucial to get human hand information for hand gesture recognition tasks. However, at present, people can not still get a perfect hand segmentation or localize hand accurately especially under complex conditions. Therefore, it is necessary to develop robust and effective methods for detecting human hand accurately. In this paper, we propose a new method for hand detection. We present an extended...
Stable grasp is the result of sensorimotor regulation of forces, ensuring sufficient grip force and the integrity of the held object. Grasping with a prosthesis introduces the challenge of finding the appropriate forces given the engineered sensorimotor prosthetic interface. Excessive force leads to unnecessary energy use and possible damage to the object. In contrast, low grip forces lead to slippage...
Instead of simple point or area lights for illuminating human face in most rendering methods, we aim to render the appearance of human face influenced by surrounding environment lighting in some real scenes. In this paper, we accurately approximate the specular reflection by using the Kelemen/Szirmay-Kalos reflectance model and ten varying specular parameters over the whole face. Also, subsurface...
Detecting pedestrian accurately from natural scenes makes the important impact on intelligent video surveillance. In this paper, we combine motion information, human skin color information, human shape information and variation of ambient lighting to detect pedestrians for the application of automated video surveillance. The moving objects in the video sequence images are extracted using the multi-frame...
Skin infections still remain common in many rural communities in developing countries, with serious economic and social consequences as well as health implications. Directly or indirectly, skin infections are responsible for much disability (and loss of economic potential), disfigurement, and distress due to symptoms such as itching or pain. In this research, we built a Skin Infection Expert System...
Traditional biopsy procedure requires invasive tissue removal from a living subject followed by time-consuming complicatedly processing, so noninvasive in vivo virtual biopsy is a highly desired technique which own ability to obtain exhaustive tissue images without removing tissues from subjects. Some sets of in vivo virtual biopsy images provided by some healthy volunteers are processed by our cell...
Two-photon laser scanning microscopy (TPLSM) has high resolution and high contrast in imaging modality, with many advantages such as non-invasive, no-toxicity, and nophotobleaching and so on. We demonstrated the influence of excitation wavelength and excitation power on the SHG and TPEF signals of human rectal mucosa, and the spectral information of certain intrinsic components in mucosa was obtained...
In this paper, we develop face and hand activity detection for motion recognition system. In initial stage, a skin color segmentation method for the color image with complex background is presented, which is a mixed skin color segmentation model in both HSI and YCbCr color space constructed. After skin color segmentation, improved face feature extraction method is proposed. Then the improved CAMSHIFT...
The goal of the current study was to investigate the effects of different virtual environment (VE) technologies on emotional arousal and task performance in a modified Stroop task presented under low- and high-stress conditions. Fifty-three participants were recruited from a college population. Reactivity to stressful VEs was examined in three representative VE systems from desktop to high-end fully...
Reference feedback contains the positive and negative feedback ranks. User¡¦s relevance feedback rank can derivate as the User¡¦s preference. In this paper, we addressed the user¡¦s relevance feedback technology to reflect the degree of user¡¦s preferences of what he liked. The personal preference and general preference could be considered in this paper. The dynamic re-ranking result will refer to...
The purpose of this work is the development and the validation of an accurate computer program for modeling of the thermal, the respiratory and the cardiovascular responses of a live or dead person exposed to any kind of environment while wearing different kinds of clothing and at rest or doing a moderate or intensive activity. The range of possible utilization is extensive, e.g., the optimization...
Due to the high degree of freedom found in hand motion, it is difficult to model articulated hand configurations. In addition, observed hand shapes vary according to the hand rotation, even when using the same hand configuration. This paper presents a new manifold embedding method for modeling low dimensional hand configurations and hand rotation using a 4D torus manifold, in which the product of...
This paper addresses a novel head posture detection algorithm to recognize human-computer interactions. A pattern training based image segmentation algorithm is used to detect the skin and hair of students. A simple and efficient human presence detection and gaze direction estimation method is then proposed based on the segmentation results. Finally, the proposed algorithm is tested on ten different...
In this paper we propose a color-based approach for skin detection and interest garment selection aimed at an automatic segmentation of pieces of clothing. For both purposes, the color description is extracted by an iterative energy minimization approach and an automatic initialization strategy is proposed by learning geometric constraints and shape cues. Experiments confirms the good performance...
One goal of projector-camera system is let human finger be used like a mouse to click and drag objects in the projected content. It requires segmentation of the human palm and fingers in the image data captured by the camera, which is a challenging task in the presence of the incessant variation of the projected video content and the shadow cast by the palm and fingers. We describe a coarse-to-fine...
In this paper, we propose to segment the human face using marker based watershed segmentation, an improved version of watershed segmentation. This algorithm uses the concept of markers as a pre requisite to determine the segments. The proposed method extracts facial features, most importantly the eyes and the lips. The successful feature extraction of the human face can contribute in a significant...
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