Optical image encryption method based on row multiplexing compressed ghost imaging and XOR operation

An encryption method and optical image technology, applied in image coding, image data processing, computing and other directions, can solve the problems of limited optical device accuracy, information loss, large storage and network bandwidth, etc., to reduce key space redundancy, The effect of reducing information loss and increasing encryption capacity
CN107564074AInactive Publication Date: 2018-01-09SHANDONG UNIV
4 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2018-01-09
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an optical image encryption method based on row multiplexing compressed ghost imaging and XOR operation. The method includes two processes of optical information encryption andcalculation decryption, for a plurality of images, an encipherer performs sparsification on images to be compressed through integer type wavelet transform and performs scrambling, and the scrambling images are integrated into an xor image through xor operation; the xor image is compressed to a ciphertext image through an improved row multiplexing compressed sensing frame, and ciphertext is published in an open mode; in a compression process, a scrambling key, an xor key and a measurement key are correspondingly generated, and are secretly distributed to different receivers; after receiving thekeys, the receivers utilize the measurement key, the xor key and the scrambling key in sequence to recover an xor image, a scrambling image and a spare image; and finally, a plaintext image is obtained through inverse wavelet transform. The method improves a compressed sensing optical implementation process, reduces key space redundancy, realizes simultaneous encryption and separate decryption ofa plurality of images, effectively enhances encryption capacity of an encryption system, and improves security.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an optical multiple image encryption method based on line multiplexing compressed ghost imaging and XOR operation, and belongs to the technical field of image encryption. Background technique

[0002] In recent years, image encryption technology based on optical information processing has attracted widespread attention. Due to the natural advantages of optical information processing technology, such as parallel data processing capabilities, multi-dimensional coding freedom, and huge key space, it is considered by scholars from all over the world to be a new generation of information security technology.

[0003] Compressed sensing, as a new compression acquisition technology in recent years, can realize simultaneous sampling and compression coding of signals, and has been extensively studied in the fields of signal processing and image acquisition. And because it can be conveniently implemented optically using the ghost imagin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More