Storage and Retrieval for Image and Video Databases最新文献_第2页

Tree-branch-searching multiresolution approach to skeletonization for virtual endoscopy 虚拟内窥镜的树杈搜索多分辨率骨架化方法

Storage and Retrieval for Image and Video Databases Pub Date : 2000-06-06 DOI: 10.1117/12.387735

Dongqing Chen, Bin Li, Zhengrong Liang, M. Wan, A. Kaufman, M. Wax

{"title":"Tree-branch-searching multiresolution approach to skeletonization for virtual endoscopy","authors":"Dongqing Chen, Bin Li, Zhengrong Liang, M. Wan, A. Kaufman, M. Wax","doi":"10.1117/12.387735","DOIUrl":"https://doi.org/10.1117/12.387735","url":null,"abstract":"One of the most important tasks for virtual endoscopy is path planning for viewing the lumen of hollow organs. For geometry complex objects, for example the lungs, it remains an unsolved problem. While alternative visualization modes have been proposed, for example, cutting and flattening the hollow wall, a skeleton of the lumen is still necessary as a reference for the cutting. A general-purpose skeletonization algorithm often generates redundant skeletons because of the local shape variation. In this study, a multistage skeletonization method for tree-like volumes, such as airway system, blood vessels, and colon, was presented. By appropriately defining the distance between voxels, the distance to the root from each voxel in the volume can be effectively determined with means of region growing techniques. The end points of all branches and the shortest path from each end point to the root can be extracted based on this distance map. A post-processing algorithm is applied to the shortest paths to remove redundant ones and to centralize the remained ones. The skeleton generated is one-voxel wide, along which every branch of the 'tree' can be viewed. For effectively processing volume of large size, a modified multiresolution analysis was also developed to scale down the binary segmented volume. Tests on airway, vessel, and colon dataset were promising.","PeriodicalId":417187,"journal":{"name":"Storage and Retrieval for Image and Video Databases","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114398026","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: 38

Automatic parameter setting for balloon models 气球模型的自动参数设置

Storage and Retrieval for Image and Video Databases Pub Date : 2000-06-06 DOI: 10.1117/12.387624

J. Bredno, T. Deserno, K. Spitzer

{"title":"Automatic parameter setting for balloon models","authors":"J. Bredno, T. Deserno, K. Spitzer","doi":"10.1117/12.387624","DOIUrl":"https://doi.org/10.1117/12.387624","url":null,"abstract":"We describe a 'learning-from-examples'-method to automatically adjust parameters for a balloon model. Our goal is to segment arbitrarily shaped objects in medical images with as little human interaction as possible. For our model, we identified six significant parameters that are adjusted with respect to certain applications. These parameters are computed from one manual segmentation drawn by a physician. (1) The maximal edge length is derived from a polygon-approximation of the manual segmentation. (2) The size of the image subset that exerts external influences on edges is set according to the scale of gradients normal to the contour. (3) The offset of the assignment from graylevels to image potentials is adjusted such that the propulsive pressure overcomes image potentials in homogeneous parts of the image. (4) The gain of this assignment is tuned to stop the contour at the border of objects of interest. (5) The strength of deformation force is computed to balance the contour at edges with ambiguous image information. (6) These parameters are computed for both, positive and negative pressure. The variation that gives the best segmentation result is chosen. The analytically derived adjustments are optimized with a genetic algorithm that evolutionarily reduces the number of misdetected pixels. The method is used on a series of histochemically stained cells. Similar segmentation quality is obtained applying both, manual and automatic parameter setting. We further use the method on laryngoscopic color image sequences, where, even for experts, the manual adjustment of parameters is not applicable.","PeriodicalId":417187,"journal":{"name":"Storage and Retrieval for Image and Video Databases","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127553334","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: 8

Contrast sensitivity of the human eye and its e ects on image quality 人眼的对比敏感度及其对图像质量的影响

Storage and Retrieval for Image and Video Databases Pub Date : 1999-12-01 DOI: 10.1117/3.353254

P. Barten

引用次数: 801

Towards an Improved Uniform Color Space 改进的统一色彩空间

Storage and Retrieval for Image and Video Databases Pub Date : 1999-08-01 DOI: 10.1002/(SICI)1520-6378(199908)24:4<253::AID-COL6>3.0.CO;2-#

R. Kuehni

引用次数: 39

Part task investigation of multispectral image fusion using gray scale and synthetic color night vision sensor imagery for helicopter pilotage 部分任务研究了基于灰度和合成彩色夜视传感器图像的直升机引航多光谱图像融合

Storage and Retrieval for Image and Video Databases Pub Date : 1997-06-20 DOI: 10.1117/12.276665

P. Steele, P. Perconti

{"title":"Part task investigation of multispectral image fusion using gray scale and synthetic color night vision sensor imagery for helicopter pilotage","authors":"P. Steele, P. Perconti","doi":"10.1117/12.276665","DOIUrl":"https://doi.org/10.1117/12.276665","url":null,"abstract":"Today, night vision sensor and display systems used in the pilotage or navigation of military helicopters are either long wave IR thermal sensors (8 - 12 microns) or image intensified, visible and near IR (0.6 - 0.9 microns), sensors. The sensor imagery is displayed using a monochrome phosphor on a Cathode Ray Tube or night vision goggle. Currently, there is no fielded capability to combine the best attributes of the emissive radiation sensed by the thermal sensor and the reflected radiation sensed by the image intensified sensor into a single fused image. However, recent advances in signal processing have permitted the real time image fusion and display of multispectral sensors in either monochrome or synthetic chromatic form. The merits of such signal processing is explored. A part task simulation using a desktop computer, video playback unit, and a biocular head mounted display was conducted. Response time and accuracy measures of test subject responses to visual perception tasks were taken. Subjective ratings were collected to determine levels of pilot acceptance. In general, fusion based formats resulted in better subject performance. The benefits of integrating synthetic color to fused imagery, however, is dependent on the color algorithm used, the visual task performed, and scene content.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.","PeriodicalId":417187,"journal":{"name":"Storage and Retrieval for Image and Video Databases","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127273201","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: 57

Three-dimensional measurement using a single image 使用单幅图像进行三维测量

Storage and Retrieval for Image and Video Databases Pub Date : 1996-05-01 DOI: 10.1117/1.600686

P. Iovenitti, W. Thompson, Manmohan Singh

引用次数: 14

Adaptive Time-Frequency Approximations with Matching Pursuits 具有匹配跟踪的自适应时频逼近

Storage and Retrieval for Image and Video Databases Pub Date : 1994-03-01 DOI: 10.1016/B978-0-08-052084-1.50018-1

G. Davis, S. Mallat

引用次数: 43

Learning of Fuzzy Rules by Mountain Clustering 基于山聚类的模糊规则学习

Storage and Retrieval for Image and Video Databases Pub Date : 1993-12-22 DOI: 10.1117/12.165030

R. Yager, Dimitar Filev

引用次数: 97

Printing CIELAB images on a CMYK printer using trilinear interpolation 使用三线性插值在CMYK打印机上打印CIELAB图像

Storage and Retrieval for Image and Video Databases Pub Date : 1992-05-01 DOI: 10.1117/12.59712

Sigfredo I. Nin, J. Kasson, Wil Plouffe

{"title":"Printing CIELAB images on a CMYK printer using trilinear interpolation","authors":"Sigfredo I. Nin, J. Kasson, Wil Plouffe","doi":"10.1117/12.59712","DOIUrl":"https://doi.org/10.1117/12.59712","url":null,"abstract":"The Color Rendering project at IBM Almaden Research Center is examining the problem of how to display and print quality color images. For this work we need a printer calibrated to a device independent color space. In this paper, we describe a system for printing CIELAB images on a CMYK printers, and focus particularly on calibration methods. We use tri-linear interpolation to convert CIELAB colors to CMY or CMYK colorants. We obtain the interpolation table by inverting a tetrahedral linear interpolation of a calibration table constructed by measuring printed color patches. Since tetrahedral interpolation has a simple analytical inverse, we can produce the inverted table much more quickly than with the numerical methods needed to invert a multilinear interpolation, even though we have to measure more patches to obtain the same accuracy. To cover the full printer gamut, we found it necessary to add some out-of-gamut entries to the inverted interpolation table. These entries must be obtained by extrapolation, and increase the errors interpolating colors on and near the gamut surface. To date we have calibrated a DuPont 4Cast to print CIELAB colors using CMY colorants. We discuss our results with this calibration, how we propose to add black, and how we fit gamut mapping into the processing.© (1992) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.","PeriodicalId":417187,"journal":{"name":"Storage and Retrieval for Image and Video Databases","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116319041","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: 16

Advanced multichip module packaging and interconnect issues for GaAs signal processors operating abo 先进的多芯片模块封装和互连问题的GaAs信号处理器运行abo

Storage and Retrieval for Image and Video Databases Pub Date : 1991-04-01 DOI: 10.1117/12.25580

B. Gilbert, Herbert H. Thompson, G. J. Fokken, W. Mcneff, J. Prentice, D. Lands, A. J. Staniszewski, W. Walters, S. Zahn, G. Pan

引用次数: 10