12 Result(s)
within
Ryo Furukawa
Machine Learning
Robotics and Automation
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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
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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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...
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Other Shape Reconstruction Techniques
In the previous chapters, the photometric stereo and structured light methods were introduced. Although these two methods have been well studied in the computer vision field, other optical phenomena are used t...
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Chapter
Biomedical Application
For medical diagnoses and treatments, basic and clear information, including heart rate, blood pressure, X-ray imagery, etc., of a subject is essential. Thus, a huge amount of sensing technologies have been re...
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Chapter
Visualization/AR/VR/MR Systems
As is shown in previous chapters, active lighting is a powerful tool that satisfies various demands. Succeeding chapters provide several application examples of active lighting. Projecting active-lighting imag...
