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Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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In Vivo Functional Brain Imaging Approach Based on Bioluminescent Calcium Indicator GFP-aequorin
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Domain-based multiple description coding of images and video.

Ivan V Bajic1, John W Woods

  • 1Dept. of Electr. Comput. and Syst. Eng., Rensselaer Polytech. Inst., Troy, NY 12180-3590, USA. ivan_bajic@ieee.org

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|February 2, 2008
PubMed
Summary

This study introduces a novel method for creating multiple image and video descriptions using transform domain partitioning. This approach enhances error concealment, improving data transmission quality and visual fidelity for digital media.

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Area of Science:

  • Digital signal processing
  • Image and video compression
  • Data transmission

Background:

  • Internet transmission of multimedia data faces challenges with signal loss.
  • Existing error concealment methods require improvement for better data recovery.
  • Transform domain signal processing offers potential for robust data representation.

Purpose of the Study:

  • To develop a novel method for generating domain-based multiple descriptions of images and video.
  • To enhance error concealment techniques for improved signal recovery.
  • To optimize Internet transmission of compressed image and video data.

Main Methods:

  • Partitioning the transform domain of the signal into maximally separated sets.
  • Applying these domain-based descriptions to subband/wavelet-coded images.
  • Utilizing the method for scalable motion compensated 3D subband/wavelet-coded video transmission.

Main Results:

  • Achieved improvements of up to 1 dB for image transmission.
  • Demonstrated several decibels of improvement for video transmission.
  • Enhanced visual quality of transmitted images and videos.

Conclusions:

  • The proposed domain-based multiple description method significantly improves error concealment.
  • This technique offers superior performance compared to existing competing methods for image and video transmission.
  • The approach leads to enhanced visual quality and more robust data recovery.