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2011 4th International Congress on Image and Signal Processing最新文献

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Design of decimation filter for real-time signal processing of micro-air-vehicles 用于微型飞行器实时信号处理的抽取滤波器设计
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100533
Yingjun Ding, Shun-an Zhong, J. Chen
{"title":"Design of decimation filter for real-time signal processing of micro-air-vehicles","authors":"Yingjun Ding, Shun-an Zhong, J. Chen","doi":"10.1109/CISP.2011.6100533","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100533","url":null,"abstract":"This paper reports a digital decimation filter chip for real-time signal processing of micro-air-vehicles (MAVs), which is composed of cascade integrator comb (CIC) filter, half-band filter and CIC compensation filter. To obtain low power, low hardware cost and efficient area, optimization was performed at behavioral level modeling and register transfer level (RTL) design. A mathematical framework was presented to perform parameters optimization of different filters. The layout was designed based on SMIC 0.18 µ m process library. The verification results show that the chip achieves a signal to noise ratio (SNR) of 54.40dB. The chip area occupies 1.69mm2 and dissipates only 2.95mW power. Area and power are well satisfied with the separation point detection of MAVs' boundary layer.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128290975","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
Suitable features for visual saliency computation in monochrome images 单色图像中视觉显著性计算的合适特征
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100509
R. Pal, Pabitra Mitra, J. Mukhopadhyay
{"title":"Suitable features for visual saliency computation in monochrome images","authors":"R. Pal, Pabitra Mitra, J. Mukhopadhyay","doi":"10.1109/CISP.2011.6100509","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100509","url":null,"abstract":"Saliency computation must consider usage of suitable combination of features along with an appropriate model to deliver desired performance. In this paper, important features for visual saliency computation are identified by analysing the performance of all possible combinations of a set of common candidate features. Combination of intensity and orientation is found to be suitable for monochrome images. Principal component analysis (PCA) on selected features is also performed. Usage of only the first principal component of selected features achieves good performance and reduces feature channels to save computational resources to a great extent.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128682447","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
Flexible reference frames based interactive error resilience of SVC in 3G 基于柔性参考帧的3G SVC交互容错算法
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6099992
Yunpeng Liu, S. Zhang, Yin Zhang, Renfang Wang, Jin Li
{"title":"Flexible reference frames based interactive error resilience of SVC in 3G","authors":"Yunpeng Liu, S. Zhang, Yin Zhang, Renfang Wang, Jin Li","doi":"10.1109/CISP.2011.6099992","DOIUrl":"https://doi.org/10.1109/CISP.2011.6099992","url":null,"abstract":"Conventional feedback based flexible reference frames/reference picture selection (RPS) technique is implemented in a single spatial layer of video coding, e.g. H.264/AVC. In this paper, we extend RPS technique into Scalable Video Coding, i.e. H.264/SVC, wherein error-free reference frames available not only from the same spatial layer but also from other spatial layer in the encoder and decoder sides are selected and used for prediction reference. And we enhance VCEG 3G offline simulation model for two spatial and interactive experiments. We test the proposed technique by using the enhanced 3G offline simulation model. Simulation results showed that our method can achieve evident PSNR gains under 3G erroneous channel conditions.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127058964","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
An improved regularization approach for blind restoration of multichannel imagery 一种改进的多通道图像盲恢复正则化方法
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100315
Zhuang Jinlian, Xia You Sheng
{"title":"An improved regularization approach for blind restoration of multichannel imagery","authors":"Zhuang Jinlian, Xia You Sheng","doi":"10.1109/CISP.2011.6100315","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100315","url":null,"abstract":"In this paper, an improved regularization approach for blind restoration of multichannel imagery is presented, based on a least absolute derivation (LAD) estimation. An efficient iterative algorithm is proposed for blind multiple-input/single-output image restoration. Compared with conventional multichannel blind image restoration algorithms, the proposed algorithm is suitable for blind image restoration under non-Guassian noise environments. Experimental results show that the proposed algorithm can obtain a better image estimate than related blind image restoration algorithms.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127213936","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: 5
Compressive sampling of natural images using bandelet basis 基于小波基的自然图像压缩采样
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100277
M. Iqbal, Jie Chen
{"title":"Compressive sampling of natural images using bandelet basis","authors":"M. Iqbal, Jie Chen","doi":"10.1109/CISP.2011.6100277","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100277","url":null,"abstract":"Bandelets transform exploits geometric information of image to determine bandelets coefficients. Bandelets basis has been used for compression of geometrical images and image denoising. In this paper, bandelets basis are used for compressive imaging of natural images using benchmark and efficient l1 minimization algorithms. Conventional compressive sampling matrices would not be suitable to extract geometric information required for construction bandelets basis. In this work, a so-called regular point sampling matrix is used to find out the geometric regularity of images. The experimental results on a set of natural images show that natural images can be reconstructed by using bandelet basis with higher PSNR and good visual quality. The bandelets based compressive sampling method outperformed conventional compressive imaging frameworks.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130588007","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
Filtering algorithm for LiDAR Outliers based on histogram and KD tree 基于直方图和KD树的LiDAR离群点滤波算法
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100705
Feng Li, Zhiwei Yu, Bo Wang, Qianlin Dong
{"title":"Filtering algorithm for LiDAR Outliers based on histogram and KD tree","authors":"Feng Li, Zhiwei Yu, Bo Wang, Qianlin Dong","doi":"10.1109/CISP.2011.6100705","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100705","url":null,"abstract":"LiDAR's outliers include points distinctly higher or lower than their surroundings and isolated points, which are normally caused by birds, low flying aircrafts, multi-path errors and system errors. It's necessary to remove LiDAR's outliers before classifying LiDAR ground points. In this study, laser points' elevations are transformed into a histogram from 0 to 255 elevation scales. Then, the histogram is split by some thresholds with a multilevel segmentation algorithm. A small amount of higher or lower laser points, as they are located at the starting or ending part of the histogram, are filtered into Low Point (noise) class refer to point proportion threshold. In the next step, the algorithm creates an unclassified laser points KD tree and searches the number of points around each laser point in given querying radius. If the number is less than a given point number threshold after increasing search radius length several times, the point is treated as isolated point, i.e. Low Point (noise) class. In experiments, it is shown that this filtering algorithm is reliable in filtering LiDAR's outliers.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130674463","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: 7
A novel quantitative measurement for thyroid cancer detection based on elastography 一种基于弹性成像的甲状腺癌检测新方法
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100576
Jianrui Ding, H. D. Cheng, Jianhua Huang, Yingtao Zhang, Chunping Ning
{"title":"A novel quantitative measurement for thyroid cancer detection based on elastography","authors":"Jianrui Ding, H. D. Cheng, Jianhua Huang, Yingtao Zhang, Chunping Ning","doi":"10.1109/CISP.2011.6100576","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100576","url":null,"abstract":"At present, the widely methods used to evaluate elastograms clinically are color score and strain ratio. The color score is a qualitative measure estimated by radiologists, and its high subjectiveness may lead to error. Although the strain ratio is a quantitative method, the region selected to calculate the value is subjective and its accuracy is still quite low. A new effective, accurate, and quantitative metric using computer aided diagnosis (CAD) techniques is proposed in this paper. The statistical features and texture features are extracted from the lesion region on the elastogram. The important and reliable features are selected by using Minimum-Redundancy-Maximum-Relevance (mRMR) algorithm. The selected features were input to the SVM to classify the thyroid nodules. The experiment results confirm that the method is more accurate and robust than color score and strain ratio.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125371815","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: 11
Communication in a hybrid multi-layer MIMD system for computer vision 用于计算机视觉的混合多层MIMD系统中的通信
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100629
Huaida Liu, Pingui Jia, Lijian Li, Yiping Yang
{"title":"Communication in a hybrid multi-layer MIMD system for computer vision","authors":"Huaida Liu, Pingui Jia, Lijian Li, Yiping Yang","doi":"10.1109/CISP.2011.6100629","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100629","url":null,"abstract":"Multi-layer MIMD computers are variable solutions for computer vision due to their flexibility and computational power. However, performance of parallel programs executed on these systems is dependent on the efficiency of inter-processor communication. Based on a hybrid multi-layer MIMD computer vision computer and message-passing mechanism, we present a software system developed to handle complex communication operations. Communication model, routing algorithm and switching technique are established and evaluated. Extensive experiments have been conducted to determine the hardware parameters of the communication links of the computer. Furthermore, communication algorithms that are frequently required in parallel vision algorithms are developed and their performance is presented.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125552652","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
An effective color image interpolation algorithm 一种有效的彩色图像插值算法
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100264
D. Zhou, S. Xiaoliu
{"title":"An effective color image interpolation algorithm","authors":"D. Zhou, S. Xiaoliu","doi":"10.1109/CISP.2011.6100264","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100264","url":null,"abstract":"Color image interpolation is usually implemented by the componentwise interpolation scheme using gray image interpolation methods, which is insufficient and results in additional artifacts. In this paper, an effective color image interpolation method is proposed, which extends the classical bicubic convolution interpolation. Our improvement includes: considering the correlation between color channels; giving a new method of color edge detection and a novel scheme estimating the missing pixels. The proposed method can well preserve the edges and textures, and noticeably suppress common artifacts such as blurring, blocking and aliasing in interpolated images. The experimental results demonstrate that it outperforms significantly the bicubic interpolation in terms of both objective and subjective measures.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123170356","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: 11
Low-frequency limited-view inverse scattering from thin electromagnetic inclusions 薄型电磁夹杂低频限视逆散射
2011 4th International Congress on Image and Signal Processing Pub Date : 2011-12-12 DOI: 10.1109/CISP.2011.6100710
W. Park, Taehoon Park
{"title":"Low-frequency limited-view inverse scattering from thin electromagnetic inclusions","authors":"W. Park, Taehoon Park","doi":"10.1109/CISP.2011.6100710","DOIUrl":"https://doi.org/10.1109/CISP.2011.6100710","url":null,"abstract":"In this contribution, we consider a limited-view inverse scattering from thin, arc-like electromagnetic inclusions. For this purpose, a non-iterative algorithm operating at multiple time-harmonic frequencies is used to find such points of inclusion and generate a good initial guess. With this guess, a level set strategy is applied to retrieve the complete shape of the unknown thin inclusion. The approaches proposed here are in line with recent investigations as described in [5], [7]. Numerical simulations will exhibit that this algorithm performs satisfactorily even with the presence of a moderate quantity of random noise on the data.","PeriodicalId":301048,"journal":{"name":"2011 4th International Congress on Image and Signal Processing","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121624288","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
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