High-security holographic display with content and copyright protection based on complex amplitude modulation

Area of Science:

• Optics and Photonics
• Information Security
• Computer Vision

Background:

• Computer-generated holograms modulate coherent wavefronts for holographic displays.
• Network transmission of holograms risks illegal acquisition and manipulation.
• Protecting holographic image content and copyright is crucial for practical applications.

Purpose of the Study:

• To develop a high-security method for protecting holographic images during transmission and display.
• To enhance the security and copyright protection of holographic content using novel encryption and watermarking techniques.

Main Methods:

• A novel method based on complex amplitude modulation is proposed.
• The complex hologram is decomposed into two phase-only holograms: ciphertext and key.
• Watermarking is embedded within the ciphertext hologram for copyright protection.

Main Results:

• Holographic images can only be reconstructed when the correct ciphertext and key are paired, significantly boosting security.
• Embedded watermarking ensures copyright protection of the holographic content.
• The method enables high-security transmission of holographic images.

Conclusions:

• The proposed method offers a practical solution for securing holographic displays against unauthorized access and manipulation.
• Simultaneous encryption and watermarking provide robust protection for holographic image content and copyright.
• This approach has significant potential for future applications in secure holographic display systems.