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	Improving speech enhancement by focusing on smaller values using relative loss 期刊论文 OAI收割 IET SIGNAL PROCESSING, 2020, 卷号: 14, 期号: 6, 页码: 374-384 作者: Li, Hongfeng; Xu, Yanyan; Ke, Dengfeng; Su, Kaile \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2020/09/07 speech enhancement speech intelligibility performance evaluation learning (artificial intelligence) neural nets absolute differences speech quality relative loss single-channel speech enhancement noisy speech ideal ratio mask phase-sensitive mask mean square error loss function absolute error values magnitude spectra deep learning clean speech recovery short-time objective intelligibility signal-to-distortion ratio segmental signal-to-noise ratio performance evaluation
	A Local Image Enhancement Method Based on Adjacent Pixel Gray Order-preserving Principle 会议论文 OAI收割 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013 作者: Fan XP(范晓鹏); Cai TF(蔡铁峰); Zhu F(朱枫) 收藏 \| 浏览/下载：41/0 \| 提交时间：2013/12/26 The paper is committed in local image enhancement. At first, the authors propose an adjacent pixel gray order-preserving principle. Adjacent pixel gray order-preserving principle is the basement of local enhancement method which ensures that there is no distortion in processed image. And then, the authors propose an iterative algorithm, which could stretch gray-scale difference of adjacent pixels in premise of not changing gray magnitude relationship between adjacent pixels. At last, the authors propose a totally reference image quality assessment method based on adjacent pixel gray order-preserving principle. According to this quality assessment method, the authors made a set of comparative experiments with local histogram equalization and method. Experimental results show that the proposed enhancement method can get higher score and provide better visual effects, fully demonstrating its effectiveness. According to this quality assessment method, the proposed method shows a good effectiveness, through experimental results and comparison with local histogram equalization method.
	audio watermarking robust against d/a and a/d conversions 期刊论文 OAI收割 EURASIP JOURNAL ON ADVANCES IN SIGNAL PROCESSING, 2011, 页码: - Xiang Shijun \| 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/10/08 Audio watermarking D/A and A/D conversions Synchronization Magnitude distortion Time scaling Wavelet transform
	Characteristics of radio transmission over polymer optical fiber for indoor wireless coverage 期刊论文 OAI收割 OPTICS COMMUNICATIONS, 2006, 卷号: 264, 期号: 1, 页码: 142-147 作者: Jia, Tao; Zheng, Shilie; Zhang, Xianmin; Jin, Xinyu; Ai, Xicheng \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2019/04/09 Polymer Optical Fiber Radio Over Fiber Error Vector Magnitude Nonlinear Distortion And Interference
	The geometric distortions correction of uncooled large-sized relative aperture infrared imaging system (EI CONFERENCE) 会议论文 OAI收割 Infrared Components and their Applications, November 8, 2004 - November 11, 2004, Beijing, China 作者: Sun Q. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 The geometric distortion of infrared image which was created by the large-sized relative aperture optical system. It could be corrected by the digital image processing technology. The magnitude of distortion would be enlarged quickly with the enlargement of relative aperture. Though the distortion could not impact on the articulation of the image it would affect geometric location precision of the image directly. In this paper the distortion correction of uncooled large-sized relative aperture infrared imaging system was discussed and the mathematical model of distortion correction was established. A algorithm of digital image processing was presented and applied based on control points by combining polynomial warping and space variant linear image interpolation. The method of polynomial warping was used to establish the locality relationship between the original image and the distortion ones. The space-variant linear image interpolation provided an efficient way to rebuild the frame of images. The computational costs of the proposed approach are very little and the precision is almost as high as the method of bicubic interpolation when compared to those of state-of-the-art nonlinear interpolation operators.
	π~+—~(16;18)O DOUBLE CHARGE EXCHANGE REACTION 期刊论文 OAI收割 Science in China;Ser.A, 1981, 期号: 4, 页码: 789-799 作者: Liu XH(刘宪辉); Wu ZE(吴宗恩); Huang CH(黄朝晖); Li YG(李扬国) 收藏 \| 浏览/下载：10/0 \| 提交时间：2015/12/10 analog pairing coherent fluctuation remarkably magnitude distortion valley momentum expanded