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Simulation design of light field imaging based on ZEMAX
SPIE Proceedings, 2017Based on the principium of light field imaging, there designed a objective lens and a microlens array for gathering the light field feature, the homologous ZEMAX models was also be built. Then all the parameters were optimized using ZEMAX and the simulation image was given out.
Ke Zhou +3 more
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A measurement of light absorption using an image-based technique
Experimental Thermal and Fluid Science, 2012Abstract In the present study, absorption coefficients were measured by an image-based photothermal technique. Spherical absorbing particles were generated using an atomizer, which produced a constant number of particles. Phase shifts were measured by image analysis of interference patterns created at which two split coherent beams were recombined ...
Jeonghoon Lee, Jung Kyung Kim
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Light field imaging based on defocused photographic images
Digital Holography and Three-Dimensional Imaging, 2016Light Field from images captured by focal plane sweeping instead of micro-lenslets or camera arraies achieve better angular resolution. However, the defocus noise is a serious problem. In this paper, we present two methods for improving the quality of the reconstructed light field from several defocus images.
Ni Chen +3 more
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Local image-based lighting with parallax-corrected cubemaps
ACM SIGGRAPH 2012 Posters on - SIGGRAPH '12, 2012Image-based lighting (IBL) is typically used for distant lighting represented by an infinite environment map. This technique has been used by many games. Games divide their scenes into several sectors and associate a cubemap (the environment mapping of choice due to its graphic hardware performance) to each of them.
Lagarde Sébastien, Antoine Zanuttini
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Accurate image based re-lighting through optimization
ACM SIGGRAPH 2002 conference abstracts and applications, 2002Image-based relighting represents a class of techniques that apply new lighting conditions to a scene, given a set of basis images. In this sketch we present a relighting technique that, for a single viewpoint, accurately captures the reflectance field of objects, without restrictions on their geometrical complexity or material properties.
Pieter Peers, Philip Dutré
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Image-based diffuse lighting using visibility maps
ACM SIGGRAPH 2003 Sketches & Applications, 2003We present an efficient technique for systematically constructing texture maps that approximate the diffuse lighting of an object, based on illumination from an environment map. Image-based diffuse lighting involves integrating an irradiance function over the full visibility hemisphere at each point of the object’s surface.
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Incoherent-Light Temporal Imaging Based on a Temporal Pinspeck
IEEE Photonics Technology Letters, 2015Incoherent-light temporal imaging using a temporal pinhole camera has been recently proposed and demonstrated as a way to improve the key limitations of coherent temporal imaging systems. However, the energy efficiency of incoherent-light temporal imaging is greatly limited by the narrow temporal pinhole, which filters out most of the incoming light ...
Shuqin Lou, Bo Li, José Azaña
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Ultrafast image-based dynamic light scattering for nanoparticle sizing
Review of Scientific Instruments, 2015An ultrafast sizing method for nanoparticles is proposed, called as UIDLS (Ultrafast Image-based Dynamic Light Scattering). This method makes use of the intensity fluctuation of scattered light from nanoparticles in Brownian motion, which is similar to the conventional DLS method. The difference in the experimental system is that the scattered light by
Xiaoshu Cai +3 more
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Image-Based Analysis of Light-Grown Seedling Hypocotyls in Arabidopsis
2012Time-resolved hypocotyl length measurements in seedlings have the potential to greatly aid genetic studies looking at light, hormone, and circadian regulation of cell expansion. Recently, several computer-based tools have been developed to quantify hypocotyl length during photomorphogenesis and early seedling development.
Benjamin J. Cole +2 more
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Pursuing Reality with Image-Based Modeling, Rendering, and Lighting
2001This paper presents techniques and animations developed from 1991 to 2000 that use digital photographs of the real world to create 3D models, virtual camera moves, and realistic computer animations. In these projects, images are used to determine the structure, appearance, and lighting conditions of the scenes.
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