A symmetric encryption scheme for color light field image

摘要

#$%^&*AU2019100036A420190228.pdf#####Abstract: The light field image (LFI) information includes the intensity of the collected object, and the direction of the light is recorded. Light field image as 4-D scene representation include 2-D spatial domain and 2-D angular domain. In this patent, we propose an encryption scheme for color light field images based on DNA sequence and chaotic system. Firstly, we employ an angular domain plane to represent the multi-view image of the LFI and then obtain a sub-view image in spatial domain. Given the sub-view image and the random matrix, a block processing method is applied to divide multiple sub-blocks. After the block processing, the DNA sequence and the chaotic system are used to encrypt the sub-view image. Moreover, considering the relationship between the two planes, we apply the Arnold transform for all the sub-view images to realize the final encryption.(a) (b) (c) (d) (e) (f Fig. 1 The corresponding encryption and decryption results. (a) Original sub-view image. (b) Encrypted image of sub-view image. (c) Decrypted image of sub-view image. (d) Original multi-view image. (e) Encrypted image of multi-view image. (f) Zoomed image of encrypted image of multi-view image. A visual example of illustrating the encryption and decryption results.