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	1. An image quality metric based on bionic models
	HOU Weilong,GAO Xinbo,HE Lihuo,GAO Fei
	Electrics, Communication and Autocontrol Technology 22 August 2011
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	Abstract:Image quality evaluation is to use some computational models to predict the quality of the specified image automatically and accurately. Since human eyes are ultimate receptor of images, it is better to mimic human visual system (HVS) to perceive the image quality. Based on the properties of the HVS, a novel bionic image quality metric (IQA) is proposed, which adopts several bionic characteristics, e.g. multi-channel decomposition, contrast sensitivity function, center-surround operation and lateral inhibition mechanism. Experimental results demonstrate that the performance of the proposed IQA method outperforms those of the existing methods.
	TO cite this article:HOU Weilong,GAO Xinbo,HE Lihuo, et al. An image quality metric based on bionic models[OL].[22 August 2011] http://en.paper.edu.cn/en_releasepaper/content/4440162


	2. Improved DCT-domain Color Image Enhancement through Anisotropic Diffusion
	Wan Yi ,Ma Yafeng
	Electrics, Communication and Autocontrol Technology 28 December 2009
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	Abstract:Color image enhancement directly in the DCT domain is an efficient approach in high speed data transmission. However, such methods often suffer from blocking artifact due to inappropriate scaling between adjacent blocks. We propose an improved method based on anisotropic diffusion that overcomes this difficulty. Simulation results show that the proposed method can effectively remove blocking artifact introduced during the DCT coefficient scaling stage, resulting in much improved performance over some of state of the art methods.
	TO cite this article:Wan Yi ,Ma Yafeng . Improved DCT-domain Color Image Enhancement through Anisotropic Diffusion[OL].[28 December 2009] http://en.paper.edu.cn/en_releasepaper/content/38136

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	3. Digital Sealing Based on Double Watermarks
	Zhao Lei,Teng Xuan
	Electrics, Communication and Autocontrol Technology 13 May 2009
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	Abstract:By integrating adaptive robust watermark and simplified fragile watermark, a digital sealing scheme is proposed. The digital seal, which resembles conventional one, shows robustness against attacks like Gaussian noise, median filtering, JPEG compression and cropping. Furthermore, any modification of the seal can be detected. Consequently, the digital sealing technique fulfills the purposes of confidentiality, authentication, integrity and non-repudiation.
	TO cite this article:Zhao Lei,Teng Xuan. Digital Sealing Based on Double Watermarks[OL].[13 May 2009] http://en.paper.edu.cn/en_releasepaper/content/32185


	4. Audio Content Classification by Using Spectral Features
	Qian Xueming ,Liu Guizhong,Wang Huan ,Li Zhi ,Nan Nan,Wang Zhe ,Sun Li
	Electrics, Communication and Autocontrol Technology 10 February 2009
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	Abstract:Audio information play important role in speaker identification and semantic based video content analysis, indexing and retrieval. Sometimes, audio clues are dominant in determining the story unit types. In this paper, a new temporal spectral feature including the proposed spectral histogram is integrated for audio content classification. By analysis the temporal spectral distribution, we adaptively determine the effective feature vectors for audio content discrimination. Finally, several one class support vector machine (SVM) are used to classify each audio clip into following five types: silence, pure music, pure speech, speech with noise background (Speech+Noise), and speech with music background (Speech+Music). Experimental results show the effectiveness of the proposed methods.
	TO cite this article:Qian Xueming ,Liu Guizhong,Wang Huan , et al. Audio Content Classification by Using Spectral Features[OL].[10 February 2009] http://en.paper.edu.cn/en_releasepaper/content/28696


	5. Pedestrian Detection Using Real Adaboost and Decision Tree
	Jia Hui-Xing,Zhang Yu-Jin
	Electrics, Communication and Autocontrol Technology 31 December 2008
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	Abstract:This paper presents a new pedestrian detection method using a monochrome video camera for driving assistance system. The algorithm is based on the cascade classifier structure first proposed by Viola for face detection. Several extensions have been proposed to make the detection framework more competent for pedestrian detection. First, two new haar like features using two separated rectangles are proposed to enrich the feature pool. Second, the decision tree is used as weak hypothesis of Real Adaboost to capture the dependencies between these features and a new splitting criterion for the tree is used to minimize the error bound of Real Adaboost directly. Third, a tree cascade classifier structure is adopted to deal with intra-class difference of pedestrian. Finally, a kalman filter is used to combine single frame detections together. Pooling together all the strategies, a new pedestrian detection system has been developed which can detect pedestrians as small as 14×28 pixels at 15f/s for a 320×240 image on a P4 3.0GHz computer.
	TO cite this article:Jia Hui-Xing,Zhang Yu-Jin. Pedestrian Detection Using Real Adaboost and Decision Tree[OL].[31 December 2008] http://en.paper.edu.cn/en_releasepaper/content/27184


	6. Blind Beamforming for Noncircular Signals via Output Impropriety-Degree Maximization
	Xu Yougen,Liu Zhiwen
	Electrics, Communication and Autocontrol Technology 30 December 2008
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	Abstract:A noncircularity exploiting adaptive beamforming scheme is presented for blind recovery of a narrow-band signal with nonzero impropriety-degree (ID). By maximizing the ID of the output signal, this new second-order blind beamformer can directly extract the signal of interest from circular interferences and noise (not necessarily Gaussian) without training signal and array calibration.
	TO cite this article:Xu Yougen,Liu Zhiwen. Blind Beamforming for Noncircular Signals via Output Impropriety-Degree Maximization[OL].[30 December 2008] http://en.paper.edu.cn/en_releasepaper/content/27077


	7. Blind Beamforming for Noncircular Signals
	Xu Yougen,Liu Zhiwen
	Electrics, Communication and Autocontrol Technology 05 November 2008
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	Abstract:Blind beamforming for extracting noncircular signals without a prior knowledge on the desired steering vector is considered in this paper. Three second-order statistic based blind schemes, termed as subspace decomposition, self-reference, and extraction power maximization methods, respectively, are proposed to extract one desired noncircular signal from a number of statistically independent circular interferences in the presence of circular Gaussian noise with arbitrary and unknown correlation structure. Two joint second- and fourth-order cumulant based methods are also developed for the case of multiple noncircular interferences. One is ESPRIT (estimation of signal parameters via rotational invariance techniques) type method. The other represents a real-valued extension of the WL-MVDR (widely linear minimum variance distortionless response). Numerical examples are shown to illustrate the performance of the proposed methods. The latest version of this online-only showing has also been submitted to IET Signal Processing.
	TO cite this article:Xu Yougen,Liu Zhiwen . Blind Beamforming for Noncircular Signals[OL].[ 5 November 2008] http://en.paper.edu.cn/en_releasepaper/content/25453


	8. Mixed-Order Blind Beamforming for Rectilinear Signals
	Xu Yougen,Liu Zhiwen
	Electrics, Communication and Autocontrol Technology 04 November 2008
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	Abstract:Blind beamforming for noncircular signals with distinct noncircularity-rates (NCRs) can be achieved via Takagi factorization based on the second-order statistics (SOS) only. However, the requirement on NCR diversity can not be satisfied by rectilinear signals (such as AM and BPSK signals), which can be frequently encountered in many practical applications. A mixed-order Takagi factorization method is herein proposed to handle coexisted rectilin-ear signals, wherein the fourth-order cumulant (FOC) is used to adjust virtually the NCRs of the signals, while the SOS is utilized for blind identification only. Some numerical examples are included to illustrate the performance of the proposed method. The latest version of this online-only showing has also been submitted to IEEE Antennas, & Wireless Propagation Letters.
	TO cite this article:Xu Yougen,Liu Zhiwen. Mixed-Order Blind Beamforming for Rectilinear Signals[OL].[ 4 November 2008] http://en.paper.edu.cn/en_releasepaper/content/25400


	9. Super-resolution algorithm based on local gradient
	Jinyu Chu,Ju Liu,Jianping Qiao,Xiaoling Wang
	Electrics, Communication and Autocontrol Technology 19 June 2008
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	Abstract:This paper presents a super-resolution method based on gradient-based adaptive interpolation. In this method, in addition to considering the distance between the interpolated pixel and the neighboring valid pixel, the interpolation coefficients take the local gradient of the original image into account. The smaller the local gradient of a pixel is, the more influence it should have on the interpolated pixel. And wiener filter is finally applied to reduce the blurring and noise of the interpolated high resolution image. Experimental results show that our proposed method not only substantially improves the subjective and objective quality of restored images, especially enhances edges, but also is robust to the registration error and has low computational complexity.
	TO cite this article:Jinyu Chu,Ju Liu,Jianping Qiao, et al. Super-resolution algorithm based on local gradient[OL].[19 June 2008] http://en.paper.edu.cn/en_releasepaper/content/22375


	10. A novel block-matching algorithm for motion estimation
	Ma Jidong ,Gu Zhaowei ,Qu Fuming ,Shen Gongjian ,Wang Anna
	Electrics, Communication and Autocontrol Technology 06 June 2008
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	Abstract:In order to reduce the computational complexity of the fast motion estimation and improve the performance of motion compensation, a block-matching algorithm of mixing diamond search and adaptive rood pattern search has been proposed. Combining the advantages of fixed search pattern and spatial correlation search pattern, the algorithm employs the high search accuracy of DS and the high search speed of ARPS. It performs zero motion prejudging for immobile macroblocks between the two adjacent frames to reduce the computational complexity, and employs the spatial correlation of motion vectors to improve the quality of predicted motion vectors. Compared to ARPS, experimental results show that the computational complexity could be reduced at least 60% while guaranteeing the search accuracy.
	TO cite this article:Ma Jidong ,Gu Zhaowei ,Qu Fuming , et al. A novel block-matching algorithm for motion estimation[OL].[ 6 June 2008] http://en.paper.edu.cn/en_releasepaper/content/22042

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