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Compression of digital hologram for three-dimensional object using Wavelet-Bandelets transform.

Le Thanh Bang1, Zulfiqar Ali, Pham Duc Quang

  • 1School of Electrical & Computer Engineering, Chungbuk National University, Cheongju-Si, Chungbuk, Korea.

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This study introduces Wavelet-Bandelets transform for digital hologram compression. The new method achieves higher compression ratios than Wavelet methods while maintaining low normalized root mean square (NRMS) error.

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Area of Science:

  • Optics and Photonics
  • Computer Science
  • Image Processing

Background:

  • Digital hologram compression is crucial for 3D object representation.
  • Balancing compression ratio and Normalized Root Mean Square (NRMS) error is a key challenge.
  • Wavelet transform offers high compression but results in high NRMS error.

Purpose of the Study:

  • To develop an improved hologram compression method.
  • To address the trade-off between compression ratio and NRMS error.

Main Methods:

  • Utilizing Wavelet-Bandelets transform for digital hologram compression.
  • Comparing performance against traditional Wavelet methods and other investigated techniques.

Main Results:

  • Wavelet-Bandelets transform achieved superior compression ratios compared to Wavelet methods.
  • The proposed method maintained low NRMS error, outperforming other investigated methods.
  • Simulation and experimental results validated the effectiveness of the Wavelet-Bandelets approach.

Conclusions:

  • Wavelet-Bandelets transform offers a better balance between compression ratio and NRMS error for digital holograms.
  • This method presents a significant advancement in digital hologram compression technology.