Optical image compression and encryption methods

The optical compression step requires a filtering operation after obtaining the image spectrum by using DCT [Fig. 24(b)]. After this filtering, a spectrum of ...

The optical image compression and encryption method based on ...

In this study, an optical image compression method based on Fresnel diffraction and discrete wavelet transform is proposed.

Optical image compression and encryption methods - HAL

Compression and encryption operations are often carried out separately, although they are strongly related and can influence each other. Optical processing ...

Encryption Algorithm Based on Compressed Sensing and Optical ...

In order to achieve large-capacity, fast and secure image transmission, a multi-image compression–encryption algorithm based on two-dimensional compressed ...

An optical image compression and encryption scheme based on ...

Most of the image encryption algorithms are the private-key cryptosystem, in which the encryption process and the decryption process employ the same keys.

[PDF] Optical image compression and encryption methods

Optical processing methodologies, based on filtering, are described that are applicable to transmission and/or data storage and the ...

Optical image encryption and authentication scheme with ...

In the optical encryption channel, the authentication image is first encrypted with the CGI method, followed by the secondary encryption of the intensity values ...

Advances in Optical Image Compression and Encryption Methods

[107] Qin Y, Gong Q, Wang Z P. Simplified optical image encryption approach using single diffraction pattern in diffractive-imaging-based scheme[J]. Optics ...

Image compression-encryption method based on two-dimensional ...

In this paper, we propose an image compression-encryption method based on two-dimensional (2D) sparse representation and chaotic system.

Optical image compression and encryption transmission-based ...

... Optical compression methods have been extensively studied for decades, inspired by bandwidth, storage, and processing powerhungry real-time image ...

Optical image encryption based on interference

In the past decade various algorithms and architectures [1, 2, 3, 4, 5, 6] such as random phase encoding, optical exclusive OR [4] image encryption, and digital ...

Advances in Optical Image Compression and Encryption Methods

In this paper, we propose the concept of generalized optical image compression-encryption and categorize its compression strategies into three types, including ...

Compressive Optical Image Encryption | Scientific Reports - Nature

The compressive optical image encryption system is shown in Fig. 1. A laser beam is split into an object beam and a reference beam. The object ...

An Optical Image Encryption Method Using Hopfield Neural Network

In this paper, an optical image encryption algorithm based on Hopfield neural network is proposed, as shown in Figure 7. To enhance the level of ...

optical image encryption: Topics by Science.gov

The proposed method can provide a new optical encryption strategy instead of the conventional 2D processing, and may open up a new research perspective for the ...

JPEG-compatible Joint Image Compression and Encryption ...

The results of security and performance analyses demonstrate that the proposed algorithm offers robust encryption of image data while maintaining compression ...

The optical image compression and encryption method based on ...

Dive into the research topics of 'The optical image compression and encryption method based on Fresnel diffraction and discrete wavelet transform'. Together ...

Simultaneous optical image compression and encryption using error ...

We report a simultaneous image compression and encryption scheme based on solving a typical optical inverse problem. The secret images to be ...

A review of single and multiple optical image encryption techniques

The main single image optical encryption techniques are double random phase encoding (DRPE), DRPE and photon counting, phase truncated Fourier ...

Performance evaluation of the multiple-image optical compression ...

In an earlier study [Opt. Express 22, 22349-22368 (2014)], a compression and encryption method that simultaneous compress and encrypt ...