2015 8th International Congress on Image and Signal Processing (CISP)最新文献_第6页

Single image super-resolution via online dictionary learning with double regularization parameters 通过双正则化参数在线字典学习实现单幅图像超分辨率

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7407880

N. Hao, Wang Jianfeng, Ruan Ruo-lin

引用次数: 0

Adaptive active broadband absorption pipeline system design 自适应有源宽带吸收管道系统设计

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408126

Xiaolin Wang, Bilong Liu, Jun Yang, Zhongkun Jin, Jingwei Liu

引用次数: 0

Person re-identification by improved Local Maximal Occurrence with color names 用颜色名称改进局部最大出现率的人物再识别

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7407963

Mengye Song, Shengrong Gong, Chunping Liu, Yi Ji, Husheng Dong

引用次数: 4

The compound controller design of a position servo system based on the acceleration signal 基于加速度信号的位置伺服系统复合控制器的设计

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408119

Ruijuan Guo, Yu Huang

{"title":"The compound controller design of a position servo system based on the acceleration signal","authors":"Ruijuan Guo, Yu Huang","doi":"10.1109/CISP.2015.7408119","DOIUrl":"https://doi.org/10.1109/CISP.2015.7408119","url":null,"abstract":"According to the parametric uncertainties, high performance requirements and a variety of nonlinear disturbances in the position tracking servo system, the compound controller composed of feed forward and feedback parts is proposed in this paper. In this feedback pathway, three closed loops are designed to obtain satisfactorily dynamic responses and restrain corresponding system disturbances such as the friction and the payload variation by adjusting the position, velocity and acceleration errors in time. And there introduces two feed forward controllers on the basis of 3-loop control system when we take account of the contradiction between accuracy and dynamic performances, in this way the compound control system not only has prospective responses to how the servo system vary unpredictably, but also possesses high precision. And it has been found that the design of the feed forward adjusters is no longer reliant on the exact system model by adding the acceleration closed loop. In order to illustrate the effectiveness of the proposed compound controller, the simulations have been carried out in a PC, and the results show the satisfactory performances in precise, rapidity and so on.","PeriodicalId":167631,"journal":{"name":"2015 8th International Congress on Image and Signal Processing (CISP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126996460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Forward modeling of the microtremor wave field based on the finite difference method 基于有限差分法的微震波场正演模拟

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408072

Faquan Zhang, Jingru Li, Jincai Ye, Guofu Wang, G. Huang

引用次数: 0

Downmix and coding of multichannel signals based on spatial correlation 基于空间相关的多通道信号的下混和编码

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408052

Bao-Ming Wu, Li Gao

{"title":"Downmix and coding of multichannel signals based on spatial correlation","authors":"Bao-Ming Wu, Li Gao","doi":"10.1109/CISP.2015.7408052","DOIUrl":"https://doi.org/10.1109/CISP.2015.7408052","url":null,"abstract":"In multichannel audio system, virtual sound source may be produced and rendered at arbitrary directions and locations so the multichannel signals are complicated. Parametric coding methods encode two or more channel signals into a downmix accompanied with spatial parameters, which can provide preferable compression ratio and considerable sound quality in multichannel audio coding. Due to the correlation between channels the signal redundancy in channels will be removed in the downmixing. However the downmixing of two uncorrelated channel signals will cause virtual sound aliasing and seriously decrease sound quality. A spatial virtual sound oriented correlation analysis method between channel signals is proposed to combine the highly correlated channels to groups for downmixing and parameters extracting. Both subjective and objective experimental results for sound quality and spatial orientation evaluation identify that the proposed dynamical grouping method for downmixing is superior to the fixed grouping method in MPEG Surround. The proposed analysis method of spatial correlation between channel signals has much lower computational complexity than the traditional direct computing of correlation and provides considerable accuracy.","PeriodicalId":167631,"journal":{"name":"2015 8th International Congress on Image and Signal Processing (CISP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115618541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mode activity based adaptive fast intra mode decision for HEVC/H.265 基于模式活动的HEVC/H.265模式内自适应快速决策

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7407867

Lejun Yu, Feng-Xiang Ge, Jun He, Bo Sun, Fenglin Dai

引用次数: 3

Signal processing on heart rate signals using the wavelet-based contourlet transform and multifractal 基于小波的contourlet变换和多重分形对心率信号进行信号处理

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408117

Zhenghua Shu, Guodon Liu, Zhihua Xie, Ying Xiong

引用次数: 2

Target representation in hyperspectral images based on tensor block term decomposition 基于张量块项分解的高光谱图像目标表示

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7407985

Xing Zhang, G. Wen, Wei Dai

{"title":"Target representation in hyperspectral images based on tensor block term decomposition","authors":"Xing Zhang, G. Wen, Wei Dai","doi":"10.1109/CISP.2015.7407985","DOIUrl":"https://doi.org/10.1109/CISP.2015.7407985","url":null,"abstract":"Combining imaging technology and spectroscopy in a unified system, hyperspectral data sets provide a powerful sense to discriminate the targets in a view. However, most of the traditional methods for HSIs concentrate on pixel/subpixel level targets and they only rely on spectral characteristic. On the one hand, the target composed of different materials may not be well-represented by only one kind of spectrum. Consequently, target recognition probability would be reduced or even failure. On the other hand, different targets might be composed of the same or similar materials, thus creating a source of false alarms. In this paper, a spectral-spatial representation for the target in hyperpsectral images (HSIs) is proposed, under the theory of tensor block term decomposition (BTD). As a consequence, the target is modeled by a set of spectrum-image terms. In each term, the spectrum indicates one kind of material of the target and the counter image corresponds to the spatial distribution of such spectrum. Both the spectral and spatial characteristics of the target are described for improving the effectiveness of hyperspectral target recognition technology. Experiments with both simulated and real HSI data sets reveal that the proposed method outperforms those spectral-based methods with better target discrimination.","PeriodicalId":167631,"journal":{"name":"2015 8th International Congress on Image and Signal Processing (CISP)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117304751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gain factor linear prediction based decision-directed method for the a priori SNR estimation 基于增益因子线性预测的决策导向先验信噪比估计方法

2015 8th International Congress on Image and Signal Processing (CISP) Pub Date : 2015-10-01 DOI: 10.1109/CISP.2015.7408063

Wantao Zhang, S. Ou, Suojin Shen, Ying Gao

{"title":"Gain factor linear prediction based decision-directed method for the a priori SNR estimation","authors":"Wantao Zhang, S. Ou, Suojin Shen, Ying Gao","doi":"10.1109/CISP.2015.7408063","DOIUrl":"https://doi.org/10.1109/CISP.2015.7408063","url":null,"abstract":"The performance of a noisy speech enhancement algorithm depends mainly on the accuracy of the a priori signal-to-noise ratio (SNR) estimate. The decision-directed (DD) algorithm for estimating the a priori SNR has received lots of attention due to its good performance in eliminating the musical noise and the low computational complexity. However, this algorithm has a serious problem in that the estimation result of the a priori SNR tracks the shape of the instantaneous SNR with one frame delay, which leads to the degraded quality of enhanced speech signal. To remove this drawback, our paper proposes a gain factor linear prediction based DD approach for the a priori SNR estimation. Firstly, we analyze the statistical dependence between the successive gain factors, and develop an adaptive scheme to predicate the current gain factor using the gain factors at previous fames. Then, the predicated gain factor at the current frame is mapped with the current noisy speech to compute the first component of the DD method. The advantage of our approach is that it does no longer consist of any priori information about the estimated a priori SNR at previous frame and effectively increases the tracking sensitivity to speech onsets. In the speech enhancement simulation experiments, the proposed method is shown to bring significant improvement as compared to the conventional DD method and its modified schemes.","PeriodicalId":167631,"journal":{"name":"2015 8th International Congress on Image and Signal Processing (CISP)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123534257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1