Three-dimensional information hierarchical encryption based on computer-generated holograms

Kong, Dezhao; Shen, Xueju; Cao, Liangcai; Zhang, Hao; Zong, Song; Jin, Guofan

doi:10.1016/j.optcom.2016.06.037

Cited by 18 publications

(6 citation statements)

References 33 publications

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“…Computer-generated holograms are one of the methods to produce encrypted images, which are simpler and faster to produce [18][19][20][21]. Each point on the hologram contains all the information about the object and can break the statistical properties of the plaintext image.…”

Section: Introductionmentioning

confidence: 99%

Holographic encryption algorithm based on the new integrated chaotic system and chaotic mask

Liang,

Chen,

Chen

et al. 2024

Phys. Scr.

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Image encryption algorithms based on chaos theory have rapidly developed in recent years, with many achieving encryption by confusion-diffusion structures. However, the security performance of these algorithms needs to be improved. This paper proposes a holographic encryption algorithm based on the new integrated chaotic system and chaotic mask. The improved Gerchberg-Saxton algorithm transforms plaintext images into pure-phase holograms. The chaotic masks generated by the new integrated chaotic system decompose holograms into sub-images. The sub-images are pixel-wise heterogeneous operations and are finally merged into the complete encrypted image. Compared with one-dimensional chaotic mapping, the generation of NICS is related to kinoform, which enhances the system's key sensitivity. The chaotic mask chunking method can generate random chunk locations and sizes, effectively preventing attacks against specific chunking rules. The performance analysis shows that the algorithm has a higher key space and security to resist stronger robustness attacks.

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Section: Introductionmentioning

confidence: 99%

Holographic encryption algorithm based on the new integrated chaotic system and chaotic mask

Liang,

Chen,

Chen

et al. 2024

Phys. Scr.

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“…In the current CGH-based 3D object encryption technology, the 3D object is coded to generate CGH. Subsequently, the CGH is encrypted using 2D image encryption [18][19][20][21][22][23]. Kong et al [18] combined CGH with chaotic random sequences for hierarchical encryption of 3D objects.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, the CGH is encrypted using 2D image encryption [18][19][20][21][22][23]. Kong et al [18] combined CGH with chaotic random sequences for hierarchical encryption of 3D objects. The final decrypted message can only be obtained with full authorization.…”

Section: Introductionmentioning

confidence: 99%

An encrypted hiding scheme for 3D objects based on CGH and Henon mapping

Ji,

Xi,

et al. 2024

Laser Phys. Lett.

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A method is proposed to enhance the security of three-dimensional (3D) objects through computer-generated hologram (CGH) encryption and hiding. The process begins by encoding the 3D object using an iterative angular-spectrum layer-oriented method to create an optimized phase-only CGH. Next, the encrypted image is produced by modulating the phase-only CGH with a chaotic random phase mask (CRPM) generated through Henon mapping. Subsequently, a combination of discrete wavelet transform (DWT) and singular value decomposition (SVD) is utilized to embed the encrypted data into a visually secure image, ensuring the encryption and concealment of 3D objects. During decryption, the accurate decryption procedure and keys must be applied to achieve the final reconstruction. The utilization of CGH in conjunction with CRPM effectively enhances the security of 3D objects, while the integration of DWT and SVD ensures the visual security properties of the encrypted data, providing a dual layer of protection for 3D objects. Experimental simulation results demonstrate that this approach achieves high-security encryption and concealment of 3D objects, ensuring high-quality decryption of 3D objects during the reconstruction process.

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“…If we want to display a dynamic 3D image the dynamic "boundary condition" is needed. In a typical computer-generated holograms system, spatial light modulator (SLM) usually used to generate the dynamic patterns [10]. But this kind of hologram display can't display large and clear 3D image due to the limitations of SLM [4].…”

Section: Introductionmentioning

confidence: 99%

Field Reconstruction of Holograms for Interactive Free Space True Three Dimensional Display

Wang¹

2019

WJAP

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Holographic display can show pictures in the way that looks like the same with the real world, and is thought as the ultimate display technology. But due to the complexity of the traditional holographic technique, it can hardly be applied to commercial display systems. In this paper, the field reconstruction of holograms (or real-time reconstruction of holograms) method, which is more practical and better than traditional holographic technique in image quality, is first proposed for realizing the display of true 3D image at free space. By combining the advantages of geometrical optics and the wave optics, a true 3D display is successfully designed.And by designing an interactive image generation chip, the designed 3D display allows user to interact with the 3D image in the style that's natural to them.Keywords: Field reconstruction of holograms; Interactive; True 3D display movies. This kind of magical displaying form always makes us admire. Nowadays, the 3D display technology attracts great academic and industrial attention due to its rapid development and applications in providing more realistic, natural, and extra depth images that are lacking in the traditional 2D display[1]. To achieve natural and comfortable 3D visual perception, a considerable amount of efforts have been dedicated, and some practical designs have been proposed. Among them the 3D display technology those based on two eyes parallax are the most mature ones [2]. But these kinds of 3D displays are not real 3D displays which are easily cause visual fatigue because of the accommodation-vergence conflict [3,4] and they have some other disadvantages, i.e., the fixed range of the viewing distance, view position, and the fixed interpupillary distance value (usually 65mm). The parallax barrier technology seriously reduces the brightness of images, so it is replaced by lenticular sheet technology in most products. In the lenticular based autostereoscopic display, the role of the lenticular lens is to magnify and transfer the information of specific pixels to a designated position [5]. The depth-reversal is considered as an inherent disadvantage of the lenticular based or the parallax barrier based autostereoscopic displays. Integral imaging is a kind of true 3D technology, which is based on the principle of reversibility of light [6,7]. But due to the poor resolution and complex structure, even it has been proposed by Lippmann for around a century, it still not been accepted by the market. Volumetric 3D display is another kind of true 3D displays, which also has some inherent defects [8]. The mechanical rotating components of it limits the image's spatial and brings in some potential danger.

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Three-dimensional information hierarchical encryption based on computer-generated holograms

Cited by 18 publications

References 33 publications

Holographic encryption algorithm based on the new integrated chaotic system and chaotic mask

Holographic encryption algorithm based on the new integrated chaotic system and chaotic mask

An encrypted hiding scheme for 3D objects based on CGH and Henon mapping

Field Reconstruction of Holograms for Interactive Free Space True Three Dimensional Display

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