LOD-sprite technique for accelerated terrain rendering

Chen, Guihai; Swan,; Kuo, Sy‐Yen; Kaufman,

doi:10.1109/visual.1999.809900

Cited by 14 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chen et al (1999) render the full-resolution terrain mesh into an image sprite and use this sprite as a texture (employing projective texture mapping) for a low resolution terrain mesh in subsequent frames. Each frame the error this produces is measured and if too high the image sprite is recreated from the view of the current camera.…”

Section: Image Warpingmentioning

confidence: 99%

Exploiting temporal coherence in real-time rendering

Scherzer

Yang

Mattausch

2010

ACM SIGGRAPH ASIA 2010 Courses

View full text Add to dashboard Cite

Temporal coherence (TC), the correlation of contents between adjacent rendered frames, exists across a wide range of scenes and motion types in practical real-time rendering. By taking advantage of TC, we can save redundant computation and improve the performance of many rendering tasks significantly with only a marginal decrease in quality. This not only allows us to incorporate more computationally intensive shading effects to existing applications, but also offers exciting opportunities of extending high-end graphics applications to reach lower-spec consumer-level hardware.This course aims to introduce participants to the concepts of TC, and provide them the working practical and theoretical knowledge to exploit TC in a variety of shading tasks. It begins with an introduction of the general notion of TC in rendering, as well as an overview of the recent developments in this field. Then it focuses on a key data structure -the reverse reprojection cache, which is the foundation of many applications. The course proceeds with a number of extensions of the basic algorithm for assisting in multi-pass shading effects, shader antialiasing, casting shadows and globalillumination effects. Finally, several more general coherence topics beyond pixel reuse are introduced, including visibility culling optimization and object-space global-illumination approximations. For all the major techniques and applications covered, implementation and practical issues involved in development are addressed in detail.In general, we emphasize "know how" and the guidelines related to algorithm choices. After the course, participants are encouraged to find and utilize TC in their own applications and rapidly adapt existing algorithms to meet their requirements.The version of the course notes you are currently reading was created at September 23, 2010. The newest version of these course notes can be downloaded from this URL. Course PrerequisitesThis course should give a computer graphics practitioner, student or researcher the working and theoretical knowledge to implement state-of-the-art temporal coherence techniques. The content of this course is delivered by talks and course notes. Prerequisites incldue knowledge of basic real-time computer graphics, such as programmable shading pipeline, model transformation, rasterization and texture mapping. Experience in writing vertex and fragment shaders is preferred.

show abstract

Section: Image Warpingmentioning

confidence: 99%

Exploiting temporal coherence in real-time rendering

Scherzer

Yang

Mattausch

2010

ACM SIGGRAPH ASIA 2010 Courses

View full text Add to dashboard Cite

show abstract

“…Image space algorithms perform visibility computation for each frame by checking whether the projections of the bounding volumes of occluded buildings fall entirely within the image area covered by the occluders. [6][7][8][9][10][11] Occlusion culling is performed either during visualization ͑on-line͒ or before visualization ͑off-line͒. On-line algorithms calculate the visibility during run-time.…”

Section: Occlusion Cullingmentioning

confidence: 99%

Stereoscopic urban visualization based on graphics processor unit

Yılmaz

Güdükbay

2008

Opt. Eng

View full text Add to dashboard Cite

Abstract. We propose a framework for the stereoscopic visualization of urban environments. The framework uses occlusion and view-frustum culling ͑VFC͒ and utilizes graphics hardware to speed up the rendering process. The occlusion culling is based on a slice-wise storage scheme that represents buildings using axis-aligned slices. This provides a fast and a low-cost way to access the visible parts of the buildings. Viewfrustum culling for stereoscopic visualization is carried out once for both eyes by applying a transformation to the culling location. Rendering using graphics hardware is based on the slice-wise building representation. The representation facilitates fast access to data that are pushed into the graphics procesing unit ͑GPU͒ buffers. We present algorithms to access this GPU data. The stereoscopic visualization uses off-axis projection, which we found more suitable for the case of urban visualization. The framework is tested on large urban models containing 7.8 million and 23 million polygons. Performance experiments show that real-time stereoscopic visualization can be achieved for large models.

show abstract

“…The IBMR techniques model a scene by combining 3-D geometry and 2-D image sprites; these create a texture map from an object represented at a high resolution, which is used to texture the same object represented at a lower resolution-reintroducing details contained in the texture 5,6 .…”

Section: Related Workmentioning

confidence: 99%

Real-time Photorealistic Visualisation of Large-scaleMultiresolution Terrain Models

Agrawal¹,

Joshi²,

Radhakrishna³

2007

DSJ

View full text Add to dashboard Cite

Height field terrain rendering is an important aspect of GIS, outdoor virtual reality applications such as flight simulation, 3-D games, etc. A polygonal model of very large terrain data requires a large number of triangles. So, even most high-performance graphics workstations have great difficulty to display even moderately sized height fields at interactive frame rates. To bring photorealism in visualisation, it is required to drape corresponding high-resolution satellite or aerial phototexture over 3-D digital terrain and also to place multiple collections of point-locationbased static objects such as buildings, trees, etc and to overlay polyline vector objects such as roads on top of the terrain surface. It further complicates the requirement of interactive frame rates while navigation over the terrain. This paper describes a novel approach for objects and terrain visualisation by combination of two algorithms, one for terrain data and the other for objects. The terrain rendering is accomplished by an efficient dynamic multiresolution viewdependent level-of-detail mesh simplification algorithm. It is augmented with out-of-core visualisation of large-height geometry and phototexture terrain data populated with 3-D/2-D static objects as well as vector overlays without extensive memory load. The proposed methodology provides interactive frame rates on a general-purpose desktop PC with OpenGLenabled graphics hardware. The software TREND has been successfully tested on different realworld height maps and satellite phototextures of sizes up to 16K*16K coupled with thousands of static objects and polyline vector overlays.

show abstract

LOD-sprite technique for accelerated terrain rendering

Cited by 14 publications

References 28 publications

Exploiting temporal coherence in real-time rendering

Exploiting temporal coherence in real-time rendering

Stereoscopic urban visualization based on graphics processor unit

Real-time Photorealistic Visualisation of Large-scaleMultiresolution Terrain Models

Contact Info

Product

Resources

About