2014 IEEE International Conference on Image Processing (ICIP)最新文献_第10页

Calibration of an industrial vision system using an ellipsoid 用椭球体标定工业视觉系统

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025700

J. Heather

引用次数: 3

Low-rank based compact representation of motion capture data 基于低秩的运动捕捉数据的紧凑表示

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025296

Junhui Hou, Lap-Pui Chau, Ying He, N. Magnenat-Thalmann

引用次数: 4

Automated detection of polysomes in cryoelectron tomography 低温电子断层扫描中多体的自动检测

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025418

Luis Kuhn Cuellar, Stefan Pfeffer, Yuxiang Chen, Friedrich Forster

{"title":"Automated detection of polysomes in cryoelectron tomography","authors":"Luis Kuhn Cuellar, Stefan Pfeffer, Yuxiang Chen, Friedrich Forster","doi":"10.1109/ICIP.2014.7025418","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025418","url":null,"abstract":"Ribosomes and messenger RNA assemble to polysomes during protein synthesis. Cryoelectron tomography enables detection and identification of large macromolecular complexes under physiological conditions making the method uniquely suitable to study the supercomplexes that govern translation of mRNA into proteins. Here, we describe a method for automated assignment of polysomes in cryoelectron tomograms using the positions and orientations of ribosomes, as localized by template matching on tomographic data, as input. On the basis of a training dataset of expert-curated polysomes in cryoelectron tomograms, we define the relative 3D arrangements of neighboring ribosomes in polysomes. This prior distribution is used in a probabilistic framework for polysome assignment: the localized ribosomes from a tomogram are represented as a graph of which the edge weights are defined by the prior distribution. A Markov Random Field is embedded on the graph structure, and a message-passing algorithm is used to infer a polysome-label for each ribosome, i.e., to cluster ribosomes into polysomes. The performance of the method is assessed based on simulated tomograms and experimental tomograms indicating that polysome detection is reliable for typical signal-to-noise ratios of cryoelectron tomograms.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"47 1","pages":"2085-2089"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76191050","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

Weakly supervised pedestrian detector training by unsupervised prior learning and cue fusion in videos 视频中基于无监督先验学习和线索融合的弱监督行人检测器训练

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025474

K. K. Htike, David C. Hogg

引用次数: 5

Hierarchical anchoring of motion fields for fully scalable video coding 用于完全可伸缩视频编码的运动域的分层锚定

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025643

Dominic Rüfenacht, R. Mathew, D. Taubman

引用次数: 9

A texture-based probability mapping for localisation of clinically important cardiac segments in the myocardium in cardiac magnetic resonance images from myocardial infarction patients 一种基于纹理的概率映射，用于在心肌梗死患者的心脏磁共振图像中定位临床上重要的心肌节段

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025451

T. Eftestøl, Frode Måløy, K. Engan, Lasya Priya Kotu, L. Woie, S. Ørn

{"title":"A texture-based probability mapping for localisation of clinically important cardiac segments in the myocardium in cardiac magnetic resonance images from myocardial infarction patients","authors":"T. Eftestøl, Frode Måløy, K. Engan, Lasya Priya Kotu, L. Woie, S. Ørn","doi":"10.1109/ICIP.2014.7025451","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025451","url":null,"abstract":"This paper presents a novel method for the identification of myocardial regions associated with increased risk of life threatening arrhythmia in patients with healed myocardial infarction assessed by late enhanced gadolinium magnetic resonance images. A probability mapping technique is used to create images where each pixel value corresponds to the probability of that pixel representing damaged myocardium. Cardiac segments are defined as the set of pixel positions associated with probability values between a lower and an upper threshold. From the corresponding pixels in the original images several features are calculated. The features studied here are the relative size and entropy values based on histograms with varying number of bins. Features calculated for a specific cardiac segment are compared between patients with high and low risk of arrhythmia. The results from comparing a large number of cardiac segments indicate that the entropy measure has a better localisation property compared to the relative size of the myocardial damage, and that the localisation is more focused for fewer number of bins in the entropy calculation.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"1 1","pages":"2227-2231"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87121589","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

Enhanced spatio-temporal video copy detection by combining trajectory and spatial consistency 结合轨迹一致性和空间一致性增强的时空视频复制检测

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025511

Savas Özkan, E. Esen, G. Akar

{"title":"Enhanced spatio-temporal video copy detection by combining trajectory and spatial consistency","authors":"Savas Özkan, E. Esen, G. Akar","doi":"10.1109/ICIP.2014.7025511","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025511","url":null,"abstract":"The recent improvements on internet technologies and video coding techniques cause an increase in copyright infringements especially for video. Frequently, image-based approaches appear as an essential solution due to the fact that joint usage of quantization-based indexing and weak geometric consistency stages give a capability to compare duplicate videos quickly. However, exploiting purely spatial content ignores the temporal variation of video. In this work, we propose a system that combines the state-of-the-art quantization-based indexing scheme with a novel trajectory-based geometric consistency on spatio-temporal features. This combination improves duplicate video matching task significantly. Briefly, spatial mean and variance of the trajectories are incorporated to establish a weak geometric consistency among pair of frames. To show the success of the proposed method, content-based video copy detection field is selected and TRECVID 2009 dataset is utilized. The experimental results show that constituting trajectory-based consistency on corresponding feature pairs outperforms the performances of merely utilizing spatiotemporal signature and visual signature with enhanced weak geometric consistency.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"50 1","pages":"2527-2531"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87594605","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

Degree of loop assessment in microvideo 微视频中的循环度评估

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7026049

Shumpei Sano, T. Yamasaki, K. Aizawa

引用次数: 9

Energy and area-efficient hardware implementation of HEVC inverse transform and dequantization 高效节能的HEVC反变换和去量化硬件实现

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025421

M. Tikekar, Chao-Tsung Huang, V. Sze, A. Chandrakasan

{"title":"Energy and area-efficient hardware implementation of HEVC inverse transform and dequantization","authors":"M. Tikekar, Chao-Tsung Huang, V. Sze, A. Chandrakasan","doi":"10.1109/ICIP.2014.7025421","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025421","url":null,"abstract":"High Efficiency Video Coding (HEVC) inverse transform for residual coding uses 2-D 4×4 to 32×32 transforms with higher precision as compared to H.264/AVC's 4×4 and 8×8 transforms resulting in an increased hardware complexity. In this paper, an energy and area-efficient VLSI architecture of an HEVC-compliant inverse transform and dequantization engine is presented. We implement a pipelining scheme to process all transform sizes at a minimum throughput of 2 pixel/cycle with zero-column skipping for improved throughput. We use data-gating in the 1-D Inverse Discrete Cosine Transform engine to improve energy-efficiency for smaller transform sizes. A high-density SRAM-based transpose memory is used for an area-efficient design. This design supports decoding of 4K Ultra-HD (3840×2160) video at 30 frame/sec. The inverse transform engine takes 98.1 kgate logic, 16.4 kbit SRAM and 10.82 pJ/pixel while the dequantization engine takes 27.7 kgate logic, 8.2 kbit SRAM and 1.10 pJ/pixel in 40 nm CMOS technology. Although larger transforms require more computation per coefficient, they typically contain a smaller proportion of non-zero coefficients. Due to this trade-off, larger transforms can be more energy-efficient.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"21 1","pages":"2100-2104"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86237186","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: 21

Sparse reconstruction from Multiple-Angle Total Internal Reflection fluorescence Microscopy 多角度全内反射荧光显微镜稀疏重建

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-01 DOI: 10.1109/ICIP.2014.7025575

Emmanuel Soubies, L. Blanc-Féraud, S. Schaub, G. Aubert

{"title":"Sparse reconstruction from Multiple-Angle Total Internal Reflection fluorescence Microscopy","authors":"Emmanuel Soubies, L. Blanc-Féraud, S. Schaub, G. Aubert","doi":"10.1109/ICIP.2014.7025575","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025575","url":null,"abstract":"Super-resolution microscopy techniques allow to overstep the diffraction limit of conventional optics. Theses techniques are very promising since they give access to the visualisation of finer structures which is of fundamental importance in biology. In this paper we deal with Multiple-Angle Total Internal Reflection Microscopy (MA-TIRFM) which allows to reconstruct 3D sub-cellular structures of a single layer of ~ 300 nm behind the glass coverslip with a high axial resolution. The 3D volume reconstruction from a set of 2D measurements is an ill-posed inverse problem and a regularization is essential. Our aim in this work is to propose a new reconstruction method for sparse structures robust to Poisson noise and background fluorescence. The sparse property of the solution can be seen as a regularization using the `£° norm'. In order to solve this combinatorial problem, we propose a new algorithm based on smoothed `£° norm' allowing minimizing a non convex energy, composed of the Kullback-Leibler divergence data term and the £° regularization term, in a Graduated Non Convexity framework.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"12 1","pages":"2844-2848"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86555304","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