US 12,120,284 B2
Image encryption method using line interlacing and image decryption apparatus therefor
Heung Kyu Lee, Daejeon (KR); Sang Keun Ji, Daejeon (KR); and Ji Hyeon Kang, Daejeon (KR)
Assigned to KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Daejeon (KR)
Filed by Korea Advanced Institute of Science and Technology, Daejeon (KR)
Filed on Mar. 31, 2022, as Appl. No. 17/710,064.
Claims priority of application No. 10-2021-0041748 (KR), filed on Mar. 31, 2021; and application No. 10-2022-0025051 (KR), filed on Feb. 25, 2022.
Prior Publication US 2022/0321736 A1, Oct. 6, 2022
Int. Cl. H04N 1/44 (2006.01); G06T 1/00 (2006.01)
CPC H04N 1/4486 (2013.01) [G06T 1/0021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image encryption method, comprising:
generating an adjusted secret image by adjusting an intensity range to be the same for each RGB channel of a secret image;
generating a modulated image by repeating pixel modulation in block units on the adjusted secret image; and
generating an interlaced image by interlacing odd-numbered lines of the adjusted secret image with even-numbered lines of the modulated image or interlacing even-numbered lines of the adjusted secret image with odd-numbered lines with the modulated image.