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This paper describes high-quality compression of high dynamic range (HDR) video using existing tools such as the HEVC Main 10 profile, the SMPTE ST 2084 (PQ) transfer function, and the BT.2020 non-constant luminance Y'CbCr color representation. First, we present novel mathematical bounds that reduce complexity of luminance-preserving subsampling (luma adjustment). A nested look-up table allows for...
We consider the problem of equalizing the quantization noise between two video encoders operating with video stored using different transfer function. Here, a transfer function is the mapping between linear light and the quantized code words and includes, for example, the well-known “gamma curve” used for most video applications. Our motivation for studying this problem is that the solution enables...
In the paper, we proposed a gender recognition scheme based on color information. The proposed gender recognition scheme is comprised of four parts: face detection, eye detection, feature extraction, and gender classifier. To evaluate the proposed scheme, a large number of images containing different-size faces are captured by using low-cost web cam. Experimental results show that our proposed scheme...
The problem of shadow detection is a challenging assignment in video surveillance systems. There are plentiful research achievements about shadow detection but they are not intellective owning to abundant manual input. In this paper, we describe a semi-supervised ensemble technique based on adaboost classifiers in a co-training framework. In this way to detect shadows just demand a fraction of labled...
This paper presents a novel dissolve detection method based on accumulating histogram difference (AHD) and support points. The proposed algorithm can detect fades and dissolves and avoid the false detection caused by the flashlight. In terms of recall, precision, computational complexity per frame and computational complexity per pixel, we compare our method with the Twin algorithm and the Two Measures...
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