A Data Hiding Method Based on Image Sets

Abstract

The invention discloses a data hiding method based on an image set. The data hiding method comprises the step of carrying out anti-overflow process on an original carrier image, the step of developing a reserved pixel area, the step of generating a carrier image, the step of respectively carrying out subtraction on the carrier image and a basic image in the built image set to obtain difference images and histogram information, the step of regarding the difference image which has largest peak value of a histogram as a carrier and hiding data based on the information hiding method of the histogram, the step of hiding label information corresponding the difference image which has the largest peak value of the histogram and the difference image which has the lowest peak value of the histogram based on the reserved pixel area serving as the carrier, the step of adding a secret containing difference image and the corresponding image in the image set to obtain a secret containing image, the step of carrying out xor operation on the secret containing image and the basic image corresponding to the lowest histogram peak value to obtain a secret containing carrier image to be transmitted, and the step of extracting label information from the secret containing carrier image through a receiving terminal, carrying out the information hiding inverse process and recovering hidden data and hidden carrier images. The capacity of information hiding is improved through the image set, and safer lossless data hiding is achieved.

Description

technical field [0001] The invention relates to a data hiding method based on an image set, which belongs to the technical field of image processing and can be used for safe and efficient data transmission between ground equipment, ground-to-spacecraft, spacecraft-to-ground, and between spacecraft. Background technique [0002] Data hiding, also known as information hiding, is to hide secret information in the carrier, and the influence on the carrier is difficult to detect. Carriers can be audio, images, text, etc. With the increase of the digital image resolution, the digital image is getting bigger and bigger. If the data is hidden in the digital image, the general trend is that the amount of hiding is getting bigger and bigger. Information hiding can be divided into lossy information hiding and lossless information hiding. Lossless information hiding can correctly restore the original image after lossless extraction of secret information, which is an important type of i...

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