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Upsampling

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...

Downsampling

Downsampling

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Absolute Motion Analysis- General Plane Motion

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Related Experiment Video

Updated: Jul 3, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

A multiple description coding and delivery scheme for motion-compensated fine granularity scalable video.

Yee Sin Chan¹, Pamela C Cosman, Laurence B Milstein

¹Verizon Communications, Walnut Creek, CA 92093-0407, USA. chanys@ieee.org

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society

|July 18, 2008

Summary

This study introduces a novel symmetric multiple description (MD) coding scheme for scalable video transmission over wireless channels. The method enhances video quality and resilience by leveraging channel diversity order for optimized motion-compensated fine-granularity scalability (MC-FGS) prediction.

Related Experiment Videos

Last Updated: Jul 3, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

Area of Science:

Video coding and transmission
Wireless communication systems
Signal processing

Background:

Motion-compensated fine-granularity scalability (MC-FGS) with leaky prediction offers a balance between compression and error resilience for video transmission.
Dynamic channel conditions pose challenges for reliable video delivery.

Purpose of the Study:

To propose and investigate an n-channel symmetric motion-compensated multiple description (MD) coding and transmission scheme.
To optimize scalable video delivery over orthogonal frequency division multiplexed (OFDM) systems.

Main Methods:

Utilizing concepts of partial and leaky predictions within the MD coding framework.
Adopting a cross-layer design perspective for scheme investigation.
Constructing symmetric motion-compensated MD codes based on channel diversity order.

Main Results:

Demonstrating how channel diversity order aids MC-FGS video coders in selecting prediction points and leaky prediction strategies.
Illustrating the reduction of drift management issues in symmetric MC-MD code construction using side information.
Validating the proposed scheme through information-theoretic analysis and simulations.

Conclusions:

The proposed scheme effectively enhances scalable video delivery over OFDM systems under varying channel conditions.
Cross-layer design integrating channel characteristics improves video transmission efficiency and resilience.
Side information plays a crucial role in mitigating drift in symmetric MC-MD coding.