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There is a need for video encoders to generate bit streams of quality that matches human evaluation. This is often achieved by adopting perceptual quality metrics in video encoders. A huge body of work has been devoted to the development of perceptual video quality metrics that take the properties of human visual system into account. It is our interest in this paper to study how the existing video...
A new computational scheme for visual attention modeling is proposed. It adopts both low-level and high-level features to predict visual attention from a video signal and fuses the features by using machine learning. We show that such a scheme is more robust than those using purely single level features. Unlike conventional techniques, our scheme is able to avoid perceptual mismatch between the estimated...
Local dimming of the LED backlight is a popular technique for saving the power of a liquid crystal display. This paper presents a novel approach that improves the performance of conventional local dimming algorithms by incorporating a visual attention prediction model in the backlight dimming process. The approach saves the energy of the liquid crystal display and, in the mean time, maintains the...
Dimming the LCD backlight saves the battery power of a portable multimedia device but causes image quality degradation. In this paper, we propose an algorithm to overcome the effect of dim backlight on image quality. This algorithm enhances the backlight-scaled image by exploiting the human visual property. It performs a two-layer image decomposition based on the just noticeable difference theory...
The prognosis of triple negative breast cancer remains poor compared with other subtypes of breast cancer, such as hormone receptor positive or human epidermal growth factor receptor 2 positive breast cancers, for the application of possible adjuvant therapy of hormone therapy for hormone receptor positive breast cancer and target therapy for human epidermal growth factor receptor 2 positive breast...
Bone is one of the most important anatomical structures in humans and osteoporosis is one of the major public health concerns in the world. Osteoporosis is a main target disease of bone, which can be detected by medical image techniques. The purpose of this study is to develop a fully automated computer scheme to measure bone-mineral-density (BMD) values for vertebral trabecular bones. This scheme...
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