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Article
Effect of low modulus titanium plate fixation on rabbit femur bone healing
The effect of a low-rigidity titanium alloy plate on bone formation during the early stage of fracture healing was investigated in this work. An artificial defect was created on rabbit femurs, and fixations of...
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Chapter and Conference Paper
Color Exaggeration for Dichromats Using Weighted Edge
Dichromats recognize colors using two out of three cone cells; L, M, and S. To extend the ability of dichromats to recognize the color difference, we propose a method to expand the color difference when observ...
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Chapter and Conference Paper
Multi-band Photometric Stereo Using Random Sampling of Channels and Pixels
One of the main problems faced by the photometric stereo method is that several measurements are required, as this method needs illumination from light sources from different directions. A solution to this pro...
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Article
Surface normal estimation from polarization and shading under the convexity assumption
Polarization is useful for estimating surface normals. In this paper, polarization is applied to shape estimation. Surface normal estimation from a single image is commonly performed by shape-from-shading. An ...
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Article
Uncalibrated photometric stereo refined by polarization angle
Photometric stereo allows us to estimate the surface normal of an object based on its shading. In uncalibrated photometric stereo, the light source direction is unknown; thus, both the light source direction a...
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Reference Work Entry In depth
Polarizer
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Chapter and Conference Paper
An Experimental Study of Influence of Post Lunch Brief Nap on Intellectual Concentration
Although it has been known that brief nap after lunch could eliminate the sleepiness and improve intellectual concentration, the effect has not been evaluated quantitatively. In this study, an evaluation exper...
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Chapter and Conference Paper
An Experimental Study on “Consensus to Match” Game for Analyzing Emotional Interaction in Consensus Building Process
For “consensus building” in which more than one people come to conclude, a variety of studies has been conducted on proposals of support methods using information technology, optimization simulations, analysis...
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Reference Work Entry In depth
Fresnel Equations
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Chapter
Light Source
To build an active-lighting system, selection and configuration of light sources are crucial. In this chapter, we categorize existing light sources based on several criteria and explain the principles and mech...
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Chapter and Conference Paper
Multispectral Photometric Stereo Using Intrinsic Image Decomposition
One of the main problems faced by the photometric stereo method is that several measurements are required, as this method needs illumination from light sources from different directions. A solution to this pro...
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Chapter
Robot Vision, Autonomous Vehicles, and Human Robot Interaction
Sensors are indispensable to robots. Active-lighting sensors, for example, work in a robust manner, even under severe conditions. They are utilized heavily for various robot tasks, such as object localization/...
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Chapter and Conference Paper
An Experimental Study on Evaluating Glare in Blue Light Exposure
It is known that blue light exposure to the eyes improves our arousal level. It is expected that exposure of office workers to blue light can maintain their concentration on their intellectual work and it may ...
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Chapter
Geometry
A common objective for using active-lighting techniques is to measure 3D geometric properties (e.g., shapes, positions, normals) of real scenes. Thus, 3D geometrical modeling of 3D scenes and measurement devic...
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Chapter
Structured Light
The structured light method is a very popular way to find correspondences between coordinates of a camera image and those of a projector image. This method class uses spatial or temporal image patterns as clue...
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Chapter
Photometric Estimation
Previous chapters considered methods of estimating geometric shape information by using active-lighting methods, which provide photometric characteristics of the target scene and light sources. Because depen...
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Chapter
E-Heritage
is a valuable asset left to us by our ancestors. Unfortunately, cultural heritage is routinely lost via natural disasters (e.g., earthquakes and tsunami) and man-made disasters (e.g., arson and mischief). Phy...
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Chapter
Photometry
Active-lighting sensors project light onto target objects or the scenes to obtain photometric measurements of the reflected light, including travel time and return angle. Therefore, understanding these sensor ...
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Chapter
Sensor
To retrieve light and reflectance information from the real world, a wide variety of sensors have been developed for specific purposes. Among them, the RGB camera, which is the most similar to the human eye, i...
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Chapter
Photometric Stereo
Shading on a surface provides strong cues for us to perceive the 3D shape of an object. The study of computationally inferring a 3D shape from shading cues originated with shape from shading (Horn in Shape from s...
