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2012 International Symposium on Intelligent Signal Processing and Communications Systems最新文献

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Improvement in transmission characteristics in acoustic OFDM with adaptive microphone array 利用自适应麦克风阵列改善声学OFDM传输特性
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473542
Shota Kono, Y. Kajikawa
{"title":"Improvement in transmission characteristics in acoustic OFDM with adaptive microphone array","authors":"Shota Kono, Y. Kajikawa","doi":"10.1109/ISPACS.2012.6473542","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473542","url":null,"abstract":"In this paper, we propose a microphone array method for an acoustic OFDM (Orthogonal Frequency Division Multiplexing) system. Recently, acoustic OFDM, which uses audible sound waves as an information transmission medium, has been studied. In acoustic OFDM, the transmission characteristic deteriorates owing to acoustic ambient noise because the acoustic noise corrupts audio signals containing embedded information. We therefore propose the application of a microphone array in acoustic OFDM systems. The proposed method can eliminate acoustic ambient noise by controlling the directivity of the microphone array, thus improving the transmission characteristics. We demonstrate the efficiency of the proposed method through some experimental results. Because latest mobile phones have built-in multi-microphones for noise cancellation, the proposed method can be implemented in actual mobile phones.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132371980","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
Digitally programmable current amplifier 数字可编程电流放大器
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473576
D. Prasertsom, T. Photsathian, W. Tangsrirat
{"title":"Digitally programmable current amplifier","authors":"D. Prasertsom, T. Photsathian, W. Tangsrirat","doi":"10.1109/ISPACS.2012.6473576","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473576","url":null,"abstract":"In this paper, a the digitally programmable current amplifier (DP-CA) for NMOS integrated circuit implementation is presented. To provide precise digital control of the gain characteristic, the proposed DP-CA comprises current proportional gain blocks that can be digitally controlled. The proposed DP-CA can be operated from a low power supply of ±1.25V. As an application example of the proposed circuit, the digitally programmable current-mode first-order allpass filter is described. Simulation results using 0.35-μm TSMC CMOS process parameters are also included.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132601913","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
Non-separable weighted median-cut quantization for images with sparse color histogram 稀疏颜色直方图图像的不可分加权中值分割量化
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473536
W. Sae-Tang, Mika Sugiyama, M. Fujiyoshi, H. Kiya
{"title":"Non-separable weighted median-cut quantization for images with sparse color histogram","authors":"W. Sae-Tang, Mika Sugiyama, M. Fujiyoshi, H. Kiya","doi":"10.1109/ISPACS.2012.6473536","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473536","url":null,"abstract":"Non-separable color reduction for color images is proposed in this paper. The proposed method befits high bit rate quantization in which, for example, a 24 bits per pixel (bpp) color image is quantized to an image with 18 bpp or more, while the conventional median-cut quantization gives huge quantization errors in such condition. This feature is useful in bit depth conversion for modern high bit depth images and is also useful in visually lossless compression. Moreover, by taking into account color histogram sparseness in which a few colors among huge possible colors are used, lossless quantization with a reasonable processing time is served by the proposed method, whereas the conventional vector quantization requires numerous processing time for lossless quantization.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131166866","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
Optimal unknown bit filtering for test response masking 测试响应掩蔽的最佳未知位滤波
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473598
Ding-ke Weng, J. Rau, Cheng-Han Lin
{"title":"Optimal unknown bit filtering for test response masking","authors":"Ding-ke Weng, J. Rau, Cheng-Han Lin","doi":"10.1109/ISPACS.2012.6473598","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473598","url":null,"abstract":"In this paper presents a new X-Masking scheme for response compaction. It filters all X states from test response that can no unknown value input to response compactor. In the experimental results, this scheme increased less control data and maintain same observability.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125382618","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
Harmonograph: A visual representation of sound 风琴:声音的视觉表现
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473539
E. M. Kim
{"title":"Harmonograph: A visual representation of sound","authors":"E. M. Kim","doi":"10.1109/ISPACS.2012.6473539","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473539","url":null,"abstract":"This paper presents a technique of extracting audio attributes - pitch, amplitude, timbre, and duration (time) by using a constant-Q transform in real-time performance and an algorithm of creating visual representations in accordance with the audio qualities.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125429306","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
Mixed criteria interference alignment-aided transceiver design in uplink coordinated multipoint systems 上行协调多点系统中混合准则干扰对准辅助收发器设计
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473603
Wan-Lin Chen, Ivan Huang, Ta-Sung Lee
{"title":"Mixed criteria interference alignment-aided transceiver design in uplink coordinated multipoint systems","authors":"Wan-Lin Chen, Ivan Huang, Ta-Sung Lee","doi":"10.1109/ISPACS.2012.6473603","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473603","url":null,"abstract":"The demand for high data rate and uniform throughput for cellular user terminals in the cell coverage leads to a new uplink coordinated multipoint (CoMP) transmission/reception technique proposed by the 3GPP LTE-A system. In this paper, we incorporate the recently proposed interference alignment (IA) techniques in uplink CoMP to improve system capacity by leveraging the full cooperation and information exchange via backhaul at the base stations. We propose a new iterative relaxed signal-to-leakage-plus-noise ratio (SLNR) IA criterion and further combine it with the maximum signal-to-interference-plus-noise ratio (SINR) IA criterion to form a mixed-criteria IA-aided CoMP scheme. The proposed new criteria exhibit excellent convergence behaviors and provide substantial performance gain for conventional CoMP, thanks to the joint processing advantage in centralized CoMP. The effectiveness of the proposed scheme is confirmed by computer simulations.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123425858","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: 4
A color image enhancement method with a high regard for restoration of skin color 一种高度重视肤色恢复的彩色图像增强方法
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473449
Kota Murahira, A. Taguchi
{"title":"A color image enhancement method with a high regard for restoration of skin color","authors":"Kota Murahira, A. Taguchi","doi":"10.1109/ISPACS.2012.6473449","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473449","url":null,"abstract":"Hue (H), saturation (S) and intensity (I) are the attributes of color. Therefore, a lot of color image enhancement techniques are performed in HSI color space. In this paper, a new color image contrast enhancement method is proposed in HSI color space. Histogram equalization (HE) is a popular technique for contrast enhancement of images. It is the most commonly used method due to its simplicity and comparatively better performance on almost all types of images. However, HE shows unnatural results for images with large background. In order to improve this drawback of HE, HE with variable enhancement degree (HE-VED) is introduced. The enhancement degree of HE-VED is controlled by one parameter. Then, HE-VED is applied to saturation and intensity histograms separately. In this paper, we aimed mainly at natural color images include human faces. In the kind of image, it is necessary to describe skin color accurately. Thus, we adjust a parameter of HE-VED, in order to restore the skin color of human faces.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126752348","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
Hierarchical pedestrian detection under low resolution scenario 低分辨率场景下的分层行人检测
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473457
Yun-Fu Liu, Jing-Ming Guo, Che-Hao Chang, Chih-Hsien Hsia
{"title":"Hierarchical pedestrian detection under low resolution scenario","authors":"Yun-Fu Liu, Jing-Ming Guo, Che-Hao Chang, Chih-Hsien Hsia","doi":"10.1109/ISPACS.2012.6473457","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473457","url":null,"abstract":"The pedestrian detection is a popular research field in recent years, yet the low-resolution issue is rarely discussed for yielding reasonable response time for drivers. In this study, a hierarchical pedestrian detection system is proposed to cope with this issue. In which, two independent features, orientation and magnitude, are adopted as the descriptors to detect pedestrians. Moreover, to meet the real-time requirement, the proposed Probability-based Pedestrian Mask Pre-Filtering (PPMPF) is adopted to initially filter out lots of non-pedestrian regions while retaining as more true pedestrian as possible. In addition, the concept of integral image is also adopted to simplify the calculations of the adopted features. In experimental results, some popular features such as the Haar-like feature and the edgelet feature are adopted for comparison. The results demonstrate that the proposed system offers better performance as well as high processing efficiency, and thus it can be a very competitive candidate for intelligent surveillance applications.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125283836","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
Fast and efficient prediction unit size selection for HEVC intra prediction 快速有效的HEVC内预测单元大小选择
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473512
Jian Xiong, Hongliang Li
{"title":"Fast and efficient prediction unit size selection for HEVC intra prediction","authors":"Jian Xiong, Hongliang Li","doi":"10.1109/ISPACS.2012.6473512","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473512","url":null,"abstract":"In this paper, a fast learning-based Coding Unit (CU) size selection method is presented for High Efficiency Video Coding (HEVC) intra prediction. Our analysis shows that non-normalized histogram of oriented gradient (n-HOG) can be used to select CU size. For each size of CU, n-HOGs of training sequences are clustered to construct a codebook offline. The optimum CU sizes are determined by comparing its n-HOG with the codebook. Experimental results show that the fast intra prediction CU selection scheme speeds up intra coding significantly with negligible increment of Bjontegaard Delta rate.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124197764","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: 9
A ultra-low power channel selection filter for low-IF FSK biomedical receivers 用于低中频FSK生物医学接收机的超低功率信道选择滤波器
2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI: 10.1109/ISPACS.2012.6473559
Horng-Yuan Shih, Wei-Hsien Chen, K. Juang, Chun-Fan Chen, Sheng-Kai Lin
{"title":"A ultra-low power channel selection filter for low-IF FSK biomedical receivers","authors":"Horng-Yuan Shih, Wei-Hsien Chen, K. Juang, Chun-Fan Chen, Sheng-Kai Lin","doi":"10.1109/ISPACS.2012.6473559","DOIUrl":"https://doi.org/10.1109/ISPACS.2012.6473559","url":null,"abstract":"Ultra-low power (ULP) receivers can be applied in wearable and implantable biomedical sensors. In this paper, a ULP band-pass filter designed as a channel selection filter for low-IF FSK biomedical receivers is implemented in 1.8 V 0.18 μm CMOS process. Under power consumption of 200 μW, the measured central frequency and bandwidth is 1.5 MHz and 330 kHz, respectively. As applied in a low-IF FSK biomedical receiver, data rate of 330 kb/s can be achieved.","PeriodicalId":158744,"journal":{"name":"2012 International Symposium on Intelligent Signal Processing and Communications Systems","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115617891","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
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