Lighting Design for Globally Illuminated Volume Rendering

Zhang, Yubo; Ma, Kwan‐Liu

doi:10.1109/tvcg.2013.172

Cited by 32 publications

(8 citation statements)

References 33 publications

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“…visualization of data in the form of 3D pixels, referred to as ‘voxels’. This method is extensively used to visualize scalar and vector fields such as MRI, CT and fluid flow datasets (36–41). The flexibility information of yeast rRNAs was converted into a scalar field to enable volume visualization.…”

Section: Methodsmentioning

confidence: 99%

Tracking fluctuation hotspots on the yeast ribosome through the elongation cycle

Gulay

Bista

Varshney

et al. 2017

Nucleic Acids Research

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Chemical modification was used to quantitatively determine the flexibility of nearly the entire rRNA component of the yeast ribosome through 8 discrete stages of translational elongation, revealing novel observations at the gross and fine-scales. These include (i) the bulk transfer of energy through the intersubunit bridges from the large to the small subunit after peptidyltransfer, (ii) differences in the interaction of the sarcin ricin loop with the two elongation factors and (iii) networked information exchange pathways that may functionally facilitate intra- and intersubunit coordination, including the 5.8S rRNA. These analyses reveal hot spots of fluctuations that set the stage for large-scale conformational changes essential for translocation and enable the first molecular dynamics simulation of an 80S complex. Comprehensive datasets of rRNA base flexibilities provide a unique resource to the structural biology community that can be computationally mined to complement ongoing research toward the goal of understanding the dynamic ribosome.

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Section: Methodsmentioning

confidence: 99%

Tracking fluctuation hotspots on the yeast ribosome through the elongation cycle

Gulay

Bista

Varshney

et al. 2017

Nucleic Acids Research

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“…Banks and Beason [29] proposed a 4D light transport model to decouple the illumination computation from the isosurface generation. Recently, ambient volume scattering [30] has been proposed to simulate scattering on mesoscopic scales in direct volume rendering, and an advanced lighting design [31] for the global illumination in volume rendering was presented. However, these approaches do not interactively reflect the changes of volume rendering settings, such as the transfer function and lighting properties.…”

Section: Related Workmentioning

confidence: 99%

Approximate Image-Space Multidirectional Occlusion Shading Model for Direct Volume Rendering

Jang

Kim

2021

Applied Sciences

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Understanding and perceiving three-dimensional scientific visualizations, such as volume rendering, benefit from visual cues produced by the shading models. The conventional approaches are local shading models since they are computationally inexpensive and straightforward to implement. However, the local shading models do not always provide proper visual cues since non-local information is not sufficiently taken into account for the shading. Global illumination models achieve better visual cues, but they are often computationally expensive. It has been shown that alternative illumination models, such as ambient occlusion, multidirectional shading, and shadows, provide decent perceptual cues. Although these models improve upon local shading models, they still require expensive preprocessing, extra GPU memory, and a high computational cost, which cause a lack of interactivity during the transfer function manipulations and light position changes. In this paper, we proposed an approximate image-space multidirectional occlusion shading model for the volume rendering. Our model was computationally less expensive compared to the global illumination models and did not require preprocessing. Moreover, interactive transfer function manipulations and light position changes were achievable. Our model simulated a wide range of shading behaviors, such as ambient occlusion and soft and hard shadows, and can be effortlessly applied to existing rendering systems such as direct volume rendering. We showed that the suggested model enhanced the visual cues with modest computational costs.

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“…• Reflectance Transformation Imaging (C): a photographic technique for capturing the shape of a surface and the color of an object by combining photographs of the objects taken from a semi-static camera on an MAV under various illumination provided by a different MAV [21]. • Three-point & strong-side lighting (C) * : filming techniques [22] in which 1-3 sources of light are used in different locations relative to the optical axis of the camera.…”

Section: Motivationmentioning

confidence: 99%

Dronument: System for Reliable Deployment of Micro Aerial Vehicles in Dark Areas of Large Historical Monuments

Petráček

Krátký

Saska

2020

IEEE Robot. Autom. Lett.

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This letter presents a self-contained system for robust deployment of autonomous aerial vehicles in environments without access to global navigation systems and with limited lighting conditions. The proposed system, application-tailored for documentation in dark areas of large historical monuments, uses a unique and reliable aerial platform with a multi-modal lightweight sensory setup to acquire data in human-restricted areas with adverse lighting conditions, especially in areas that are high above the ground. The introduced localization method relies on an easy-to-obtain 3-D point cloud of a historical building, while it copes with a lack of visible light by fusing active laserbased sensors. The approach does not rely on any external localization, or on a preset motion-capture system. This enables fast deployment in the interiors of investigated structures while being computationally undemanding enough to process data online, onboard an MAV equipped with ordinary processing resources.The reliability of the system is analyzed, is quantitatively evaluated on a set of aerial trajectories performed inside a realworld church, and is deployed onto the aerial platform in the position control feedback loop to demonstrate the reliability of the system in the safety-critical application of historical monuments documentation.

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Lighting Design for Globally Illuminated Volume Rendering

Cited by 32 publications

References 33 publications

Tracking fluctuation hotspots on the yeast ribosome through the elongation cycle

Tracking fluctuation hotspots on the yeast ribosome through the elongation cycle

Approximate Image-Space Multidirectional Occlusion Shading Model for Direct Volume Rendering

Dronument: System for Reliable Deployment of Micro Aerial Vehicles in Dark Areas of Large Historical Monuments

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