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Tone mapping is a technology to display a high-dynamic-range(HDR) image on a low-dynamic-range device by compressing the dynamic range. In this paper, we propose a method to preserve fine details and overall color tone by image multi-layer decomposition and reconstruction. The HDR image is first decomposed into multi-scale detail layers with the weighted least square(WLS)filter based on extremes....
This paper proposes a robust object tracking algorithm dealing with the occlusion problem and illumination change. In particular, we judge whether each frame image is occluded by the confidence map, and two object spatial-temporal context models are established, one is updated every frame in the process of tracking, and the other is set up before the frame that the object is occluded. This method...
In discriminative tracking algorithms, the accuracy of classifier which relies heavily on the selection of training samples can directly influence the performance of visual tracking. Motivated by above, a tracking algorithm is presented based on regularized approximate residual weighted subsampling in the paper. Through the subsampling procedure, the corrupted samples which exert adverse impacts on...
No-reference objective stereo video quality assessment plays an important role in stereo video content production, especially to the sense of 2D-to-3D video conversion. The main problem needed to consider when designing an objective quality assessment model is to make the assessment result close to human perception. In this paper, a no-reference objective stereo video quality assessment method is...
Visual tracking is one of the most active research areas in computer vision, with numerous application including augmented reality, surveillance, weapons-guiding technologies, and object identification. The key question for robust visual tracking is to extract the appearance model features of target appropriately and locate the object exactly. This paper presents a novel nonrigid target tracking algorithm...
The great circle route and rhumb line are two important spherical curves. The characteristic of the former curve could be best understood on a sphere, while the characteristic of the latter is fully expressed on a projected map, which is Mercator's projection. This paper utilized electronic map APIs and web3D techniques to provide an interactive webpage to display 2D and 3D views. A projected Mercator...
Text-based image search engine and content-based image retrieval (CBIR) have achieved much progress in commerce and academic community. In addition, a few attempts have been conducted to integrate the two techniques for image retrieval in web context. However, it is very difficult for general search engine based on image context to return highly accurate results. Compound face image retrieval system,...
Object detection and tracking under the microscopic field of view is an important part in a vision based automated cell injection system. This paper introduces a novel method for recognizing and tracking the cell, the holding pipette and the injection pipette in an Intracytoplasmic Sperm Injection (ICSI) process. The algorithm for identification firstly automatically segmented the microscopic image...
Perceptual Watermarking should take full advantage of the results from human visual system (HVS) studies. Just noticeable difference (JND), which refers to the maximum difference that the HVS does not perceive, gives us a way to model the HVS accurately. In this paper, we exploit a combined JND model which represents additional accurate perceptual visibility threshold profile to guide watermarking...
With the working environments of the spherical robot become increasingly complex and unstructured, we must improve the autonomy of the robot. As a new mobile robot, the reliable navigation system and accurate sensory ability is very important. The paper presents a single image-based path planning algorithm for a spherical robot moving in an unknown environment. The robot explores the environment with...
Perceptual watermarking for video needs to take full advantage of the results of human visual system (HVS) studies. Just noticeable distortion (JND), which refers to the maximum distortion that the HVS does not perceive, gives us a way to model the HVS accurately. Since motion is a specific feature of video, estimation of the JND profile for video needs to take into account the temporal HVS properties...
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