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Related Concept Videos

Light Acquisition02:16

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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A Guide to Structured Illumination TIRF Microscopy at High Speed with Multiple Colors
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Published on: May 30, 2016

Color-encoded structured light for rapid active ranging.

K L Boyer1, A C Kak

  • 1Robot Vision Laboratory, School of Electrical Engineering, Purdue University, West Lafayette, IN 47907; Department of Electrical Engineering, Ohio State University, Columbus, OH 43.

IEEE Transactions on Pattern Analysis and Machine Intelligence
|August 27, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces a new color-encoded structured light method for fast 3D scene mapping. It achieves high-resolution range data in real-time with improved accuracy and reduced costs.

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Area of Science:

  • Computer Vision
  • Optical Engineering
  • 3D Reconstruction

Background:

  • Traditional 3D mapping methods often face challenges with speed, accuracy, and cost.
  • Existing structured light techniques can be complex, requiring multiple projections and suffering from alignment issues.

Purpose of the Study:

  • To present a novel, efficient strategy for rapid 3D scene range map acquisition.
  • To overcome limitations of previous structured light techniques by simplifying the process and enhancing performance.

Main Methods:

  • Illuminating the scene with a single grid of color-encoded light stripes.
  • Utilizing color encoding to solve the stripe indexing problem, matching detected stripes to their projected positions.
  • Acquiring range data from a single projection and a single color image.

Main Results:

  • Enabled real-time, high-resolution range data acquisition at a modest cost.
  • Eliminated grid-to-grid alignment issues inherent in multistripe methods.
  • Improved scene illumination uniformity, simplifying stripe detection and reducing mechanical design complexity.

Conclusions:

  • The proposed color-encoded structured light technique offers a significant advancement in 3D mapping.
  • This method provides a faster, more accurate, and cost-effective solution for acquiring detailed range maps.
  • It simplifies equipment design and overcomes key limitations of prior approaches.