12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.最新文献_第2页

A progressive refinement approach for image magnification 一种用于图像放大的渐进细化方法

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348366

H. Johan, T. Nishita

{"title":"A progressive refinement approach for image magnification","authors":"H. Johan, T. Nishita","doi":"10.1109/PCCGA.2004.1348366","DOIUrl":"https://doi.org/10.1109/PCCGA.2004.1348366","url":null,"abstract":"The rapid growth in computer graphics and digital cameras has resulted in computer users being able to easily produce digital images. As a result, the need to display and print digital images has increased. Nowadays, high-resolution display and printing devices are available to users. Therefore, high-resolution images are needed in order to produce high quality displayed images and high quality prints. However, since high-re solution images are not usually provided, there is a need to magnify the original images. Previous methods on magnifying images have the disadvantage that either the sharpness of the edges cannot be preserved or that some distinct artifacts are produced in the magnified image. In this paper, we present a novel method for doubling the size of images in which the sharpness of the edges is preserved without introducing distinct artifacts in the magnified images. The proposed method consists of two steps, first generation of an initial magnified image and then progressively refining this image to produce a high quality magnified image. The experimental results show that with the proposed method it is possible to produce magnified images of comparable, and in some cases superior, visual quality to those produced using previous methods.","PeriodicalId":264796,"journal":{"name":"12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.","volume":"237 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114005213","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

Multi-dimensional transfer functions for interactive 3D flow visualization 交互式三维流可视化的多维传递函数

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348348

S. W. Park, B. Budge, L. Linsen, B. Hamann, K. Joy

{"title":"Multi-dimensional transfer functions for interactive 3D flow visualization","authors":"S. W. Park, B. Budge, L. Linsen, B. Hamann, K. Joy","doi":"10.1109/PCCGA.2004.1348348","DOIUrl":"https://doi.org/10.1109/PCCGA.2004.1348348","url":null,"abstract":"Transfer functions are a standard technique used in volume rendering to assign color and opacity to a volume of a scalar field. Multidimensional transfer functions (MDTFs) have proven to be an effective way to extract specific features with subtle properties. As 3D texture-based methods gain widespread popularity for the visualization of steady and unsteady flow field data, there is a need to define and apply similar MDTFs to interactive 3D flow visualization. We exploit flow field properties such as velocity, gradient, curl, helicity, and divergence using vector calculus methods to define an MDTF that can be used to extract and track features in a flow field. We show how the defined MDTF can be applied to interactive 3D flow visualization by combining them with state-of-the-art texture-based flow visualization of steady and unsteady fields. We demonstrate that MDTFs can be used to help alleviate the problem of occlusion, which is one of the main inherent drawbacks of 3D texture-based flow visualization techniques. In our implementation, we make use of current graphics hardware to obtain interactive frame rates.","PeriodicalId":264796,"journal":{"name":"12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124731568","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

Classification for Fourier volume rendering 傅里叶体绘制的分类

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348334

Z. Nagy, Gero Müller, R. Klein

引用次数: 5

Antialiased rendering of self-intersecting polygons using polygon decomposition 使用多边形分解的自相交多边形的抗锯齿渲染

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348369

K. Doan

引用次数: 7

Non-photorealistic real-time rendering of characteristic faces 特征面部的非真实感实时渲染

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348365

Thomas Luft, O. Deussen

引用次数: 7

CSG tree rendering for point-sampled objects 点采样对象的CSG树渲染

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348346

M. Wicke, M. Teschner, M. Gross

引用次数: 28

Direct anisotropic quad-dominant remeshing 直接各向异性四主导重划分

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348351

Martin Marinov, L. Kobbelt

引用次数: 113

Frequency-based environment matting 基于频率的环境抠图

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348371

Jiayuan Zhu, Herbert Yang

引用次数: 35

Intelligent mesh scissoring using 3D snakes 智能网格剪切使用3D蛇

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348358

Yunjin Lee, Seungyong Lee, Ariel Shamir, D. Cohen-Or, H. Seidel

{"title":"Intelligent mesh scissoring using 3D snakes","authors":"Yunjin Lee, Seungyong Lee, Ariel Shamir, D. Cohen-Or, H. Seidel","doi":"10.1109/PCCGA.2004.1348358","DOIUrl":"https://doi.org/10.1109/PCCGA.2004.1348358","url":null,"abstract":"Mesh partitioning and parts extraction have become key ingredients for many mesh manipulation applications both manual and automatic. In this paper, we present an intelligent scissoring operator for meshes which supports both automatic segmentation and manual cutting. Instead of segmenting the mesh by clustering, our approach concentrates on finding and defining the contours for cutting. This approach is based on the minima rule, which states that human perception usually divides a surface into parts along the contours of concave discontinuity of the tangent plane. The technique uses feature extraction to find such candidate feature contours. Subsequently, such a contour can be selected either automatically or manually, or the user may draw a 2D line to start the scissoring process. The given open contour is completed to form a loop around a specific part of the mesh, and this loop is used as the initial position of a 3D geometric snake. The snake moves by relaxation until it settles to define the final scissoring position. This process uses several fundamental geometric mesh attributes, such as curvature and centricity, and enables both automatic segmentation and an easy-to-use intelligent-scissoring operator.","PeriodicalId":264796,"journal":{"name":"12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings.","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133558066","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: 97

Hardware-accelerated reconstruction of polygonal isosurface representations on unstructured grids 非结构化网格上多边形等面表示的硬件加速重建

12th Pacific Conference on Computer Graphics and Applications, 2004. PG 2004. Proceedings. Pub Date : 2004-10-06 DOI: 10.1109/PCCGA.2004.1348349

T. Klein, S. Stegmaier, T. Ertl

引用次数: 71