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2004 International Conference on Image Processing, 2004. ICIP '04.最新文献

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Edge directed filter based error concealment for wavelet-based images 基于边缘定向滤波的小波图像误差隐藏
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1419421
Shuiming Ye, Qibin Sun, E. Chang
{"title":"Edge directed filter based error concealment for wavelet-based images","authors":"Shuiming Ye, Qibin Sun, E. Chang","doi":"10.1109/ICIP.2004.1419421","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1419421","url":null,"abstract":"Edges in a natural image have important effects on the subjective visual quality. During the transmissions of wavelet-compressed images such as JPEG2000, errors in high frequency subbands will result in the effects like ring or ripple artifacts around edges. In this paper, we propose an error concealment algorithm to remove these annoying artifacts. This algorithm requires an edge directed filter. Although some known filters can be employed, we tailor-make a new edge directed filter which fits well in our algorithm. The proposed scheme firstly enhances the received damaged image using the edge directed filter. Then the recovered wavelet coefficients are rectified using two constraint functions, which are based on the statistical characteristics in the wavelet domain and the observation that correctly received data must remain unchanged. Simulation results show that the image quality has been significantly improved in terms of both objective and subjective evaluation.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633700","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: 32
Microcalcification detection based on localized texture comparison 基于局部纹理比较的微钙化检测
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1421732
Xin Yuan, P. Shi
{"title":"Microcalcification detection based on localized texture comparison","authors":"Xin Yuan, P. Shi","doi":"10.1109/ICIP.2004.1421732","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1421732","url":null,"abstract":"While microcalcifications (MCs) are important early signs of breast cancers, their reliable detection from mammograms has been largely elusive for both radiologists and computer-aided diagnosis (CAD) strategies. Two of the essential components in a CAD system are the detection of the suspicious MC pixels/regions using image processing and analysis techniques, and the training, classification, and recognition of these areas based on pattern recognition methods. In this paper, we present a novel scheme to identify and classify microcalcifications based on localized texture comparison. Relying on a texture removal and repairing (R&R) process of the preselected suspicious areas from their surrounding background tissues, pre- and post- R&R local characteristic features of these areas are extracted and compared. A modified AdaBoost algorithm is then adopted to train the classifier using expert-labelled microcalcifications, followed by a clustering process. Experiments with the mammographic images from the MIAS and DDSM databases have shown very promising results.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122662042","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: 12
Analysis/synthesis systems for progressive-to-lossless embedded wavelet image coding 用于渐进到无损嵌入小波图像编码的分析/合成系统
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1418802
K. Komatsu, K. Sezaki
{"title":"Analysis/synthesis systems for progressive-to-lossless embedded wavelet image coding","authors":"K. Komatsu, K. Sezaki","doi":"10.1109/ICIP.2004.1418802","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1418802","url":null,"abstract":"We investigate analysis/synthesis systems for progressive-to-lossless embedded wavelet image coding. We propose a system which does not use an inverse lossless wavelet transform (ILWT) but an inverse wavelet transform (IWT). In this system, we must correct the mean value of rounding errors of each band. We also investigate a mixed-type system which is obtained by applying repeatedly a 4-band non-separable forward lossless wavelet transform (FLWT) for the lowest frequency band. Our simulation shows that the PSNR of the reconstructed image of the non-separable FLWT followed by the IWT is 2.7 dB higher than that of the separable FLWT followed by the ILWT at a bit rate, and that the mixed-type system switching inverse transforms depending on the bit rate has good performance at all bit rates.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122975496","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
A novel boundary handling scheme for arbitrary object shape in video and image compression 一种新的视频图像压缩中任意形状物体的边界处理方法
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1419487
K. Pun, Truong Q. Nguyen
{"title":"A novel boundary handling scheme for arbitrary object shape in video and image compression","authors":"K. Pun, Truong Q. Nguyen","doi":"10.1109/ICIP.2004.1419487","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1419487","url":null,"abstract":"This paper presents a novel scheme for handling image boundary for a class of biorthogonal multidimensional (MD) perfect reconstruction (PR) filter banks (FB) using lifting scheme which finds important applications in image and video compression applications. An intuitive example is given to demonstrate our proposed for obtaining a nonexpansive transformation using nonseparable FB on arbitrary image shape.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"1 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114129263","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
A state space approach to noise reduction of 3D fluorescent microscopy images 三维荧光显微图像的状态空间降噪方法
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1419508
R. Ober, X. Lai, Zhiping Lin, Sally E. Ward
{"title":"A state space approach to noise reduction of 3D fluorescent microscopy images","authors":"R. Ober, X. Lai, Zhiping Lin, Sally E. Ward","doi":"10.1109/ICIP.2004.1419508","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1419508","url":null,"abstract":"An algorithm is presented to calculate a state space realization of a 3D image set. It is based on interpreting the image set as the impulse response of a 3D separable system. As an application it is shown how the approximation steps, including balanced model reduction methods, in the algorithm can be used to suppress noise in 3D image sets. The approach was motivated by a practical problem in the analysis of 3D fluorescent microscopy image data of fluorescently labelled cells.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114246461","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
Fast facial feature extraction using a deformable shape model with Haar-wavelet based local texture attributes 基于haar -小波局部纹理属性的可变形形状模型快速人脸特征提取
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1421330
F. Zuo, P. D. With
{"title":"Fast facial feature extraction using a deformable shape model with Haar-wavelet based local texture attributes","authors":"F. Zuo, P. D. With","doi":"10.1109/ICIP.2004.1421330","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1421330","url":null,"abstract":"Wc propose a fast and improved facial feature extraction technique for embedded face-recognition applications. This technique applies to both face alignment and recognition and significantly improves three aspects. First, we introduce the local texture attributes to a statistical face model. A texture attribute characterizes the 2-D local feature structures and is used to guide the model deformation. This provides more robustness and faster convergence than with conventional ASM (active shape model). Second, the local texture attributes are modelled by Haar-wavelets, yielding faster processing and more robustness with respect to low-quality images. Third, we use a gradient-based method for model initialization, which improves the convergence. We have obtained good results dealing with test faces that are quite dissimilar with the faces used for statistical training. The convergence area of our proposed method almost quadruples compared to ASM. The Haar-wavelet transform successfully compensates for the additional cost of using 2-D texture features. The algorithm has also been tested in practice with a Webcam, giving (near) real-time performance and good extraction results.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114412491","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: 52
SNR-scalable extension of H.264/AVC H.264/AVC的信噪比扩展
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1421772
H. Schwarz, D. Marpe, T. Wiegand
{"title":"SNR-scalable extension of H.264/AVC","authors":"H. Schwarz, D. Marpe, T. Wiegand","doi":"10.1109/ICIP.2004.1421772","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1421772","url":null,"abstract":"We present an SNR-scalable extension of the H.264/AVC video coding standard. To achieve an efficient SNR-scalable bit-stream representation of a video sequence, the temporal dependencies between pictures are exploited by using an open-loop subband approach. The related temporal analysis-synthesis filter bank structure is generalized to facilitate an adaptive block-based choice between the motion-compensated lifting representations of the Haar filter (uni-directional prediction) and the 5/3 filter (bi-directional prediction), both coupled with multiple-reference frame capabilities. As a remarkable feature of our approach, most components of H.264/AVC are used as specified in the standard, while only a few have been adjusted to the motion-compensated temporal filtering structure. Our proposed SNR-scalable extension was tested for a set of CIF sequences, and the results indicate that a coding efficiency comparable to that of the state-of-the-art H.264/AVC standard can be achieved.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584961","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: 58
Desensitisation of medical images restoration under crude estimates of mobile radio channels 移动无线电信道粗糙估计下医学图像恢复的脱敏
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1418753
G. Cisneros, E. Bernués, Irma Rodriguez, M. A. Santiago, Federico Alvarez
{"title":"Desensitisation of medical images restoration under crude estimates of mobile radio channels","authors":"G. Cisneros, E. Bernués, Irma Rodriguez, M. A. Santiago, Federico Alvarez","doi":"10.1109/ICIP.2004.1418753","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1418753","url":null,"abstract":"The paper presents an algorithm to reduce the sensitivity of the Wiener restoration scheme with respect to wrong estimates of the parameters required in a regularisation problem, applied to the transmission of medical images over a mobile radio channel. Desensitised restoration is applied to blocks of transmitted information before decoding at the receiving site, including their corresponding FECs together with the information data (i.e., JPEG coded image). The proposed desensitisation algorithm improves the restoration with respect to a conventional Wiener filter when using wrong estimates of the required parameters, i.e., wrong estimate of the blurring caused by the multipath fading, noise and statistics of the original image (which are unknown in a real situation).","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128441943","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
A similarity-based adaptive neighborhood method for correlation-based stereo matching 基于相似性的自适应邻域相关立体匹配方法
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1419747
Madaín Pérez Patricio, F. Cabestaing, O. Colot, P. Bonnet
{"title":"A similarity-based adaptive neighborhood method for correlation-based stereo matching","authors":"Madaín Pérez Patricio, F. Cabestaing, O. Colot, P. Bonnet","doi":"10.1109/ICIP.2004.1419747","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1419747","url":null,"abstract":"In this paper, we present a new method for dense stereo matching. In area-based methods, the similarity between one pixel of the left image and one pixel of the right image is measured using a correlation index computed on neighborhoods of these pixels. In our method, the neighbor pixels not similar to the center one are excluded when computing the correlation index, which corresponds to adjusting the equivalent size and shape of the correlation neighborhood. Our algorithm yields a precise estimation of the disparity in nontextured areas, while avoiding undesired smoothing at discontinuities. This method is suitable for real-time implantation using specialized hardware. We demonstrate and discuss performances using synthetic stereo pairs.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128791512","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: 17
High-capacity data hiding in halftone images using minimal error bit searching 高容量数据隐藏在半色调图像使用最小的错误位搜索
2004 International Conference on Image Processing, 2004. ICIP '04. Pub Date : 2004-10-24 DOI: 10.1109/ICIP.2004.1421860
S. Pei, Jing-Ming Guo
{"title":"High-capacity data hiding in halftone images using minimal error bit searching","authors":"S. Pei, Jing-Ming Guo","doi":"10.1109/ICIP.2004.1421860","DOIUrl":"https://doi.org/10.1109/ICIP.2004.1421860","url":null,"abstract":"In this paper, a high capacity data hiding is proposed for embedding a large amount of information into halftone images. The embedded watermark can be distributed into several error-diffused images by the proposed minimal error bit searching technique (MEBS). The method can be generalized to self-decoding mode with dot diffusion or color halftone images. From the experiments, the embedded capacity from 33% up to 50% and good quality result are achieved. Furthermore, the proposed MEBS method is also extended for robust watermarking to against the degradation from printing-and-scanning and several kinds of distortions.","PeriodicalId":184798,"journal":{"name":"2004 International Conference on Image Processing, 2004. ICIP '04.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128346632","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
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