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Related Experiment Video

Updated: Jul 31, 2025

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

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Published on: July 5, 2016

HEVC extension for phase hologram compression.

Kwan-Jung Oh, Hyunmin Ban, Seungmi Choi

|May 9, 2023

Summary

This summary is machine-generated.

This study introduces an efficient compression method for phase-only holograms (POHs) by extending the High Efficiency Video Coding (HEVC) standard. The new method significantly improves compression performance for POH video sequences.

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Area of Science:

Digital holography
Image and video compression
Signal processing

Background:

Digital holograms generate large data sizes, posing compression challenges.
Existing compression methods show limited performance for phase-only holograms (POHs).
High Efficiency Video Coding (HEVC) is a standard for natural image and video compression.

Purpose of the Study:

To develop an efficient compression method for phase-only holograms (POHs).
To extend the High Efficiency Video Coding (HEVC) standard for effective POH compression.
To improve coding performance beyond current limitations for POH data.

Main Methods:

Modified HEVC encoding and decoding processes for phase signals.
Developed methods for calculating differences, distances, and clipped values considering phase periodicity.
Extended HEVC to effectively compress phase images alongside natural images.

Main Results:

Achieved average BD-rate reductions of 63.3% in the phase domain.
Attained average BD-rate reductions of 65.5% in the numerical reconstruction domain.
Demonstrated significant outperformance of the proposed method over the original HEVC for POH sequences.

Conclusions:

The proposed method offers a significant improvement in POH compression efficiency.
The modifications are minimal and compatible with future standards like Versatile Video Coding (VVC).
This approach effectively addresses the limitations of current video coding standards for holographic data.