Digital Image Scrambling Algorithm Based on Chaotic Sequence and Decomposition and Recombination of Pixel Values
نویسندگان
چکیده
Based on chaotic sequence and decomposition and recombination of pixel values, a new digital image scrambling algorithm is proposed in the paper. While scrambling image pixel values, this new algorithm is able to change the spatial position of pixel, simultaneously scrambling both position and pixel values. Experiments show that the new algorithm is larger in key space, highly efficient, sensitive to secret keys, capable of changing grayscale feature of images, satisfactory in scrambling result, and resistant to attacks to some extent.
منابع مشابه
A Space-bit-plane Scrambling Algorithm for Image Based on Chaos
Image scrambling is an important technique in digital image encryption and digital image watermarking. This paper's main purpose is to research how to scramble image by space-bit-plane operation (SBPO). Based on analyzing traditional bit operation of individual pixels image scrambling method, this paper proposed a new scrambling algorithm. The new scrambling algorithm combined with SBPO and cha...
متن کاملImproved Encryption Algorithm of Images Based on Three-Dimensional Chaos
It describes an improved encryption algorithm of a three-dimensional image based on multiple chaotic systems. The algorithm uses a variety of chaotic encryption system to cut the image into three-dimensional matrix systems, in three-dimensional space do the image scrambling transformation, three-dimensional chaotic sequence output by multiple chaotic systems achieved three color pixel substitut...
متن کاملA New Method for Encryption of Color Images based on Combination of Chaotic Systems
This paper presents a new method for encryption of color images based on a combination of chaotic systems, which makes the image encryption more efficient and robust. The proposed algorithm generated three series of data, ranged between 0 and 255, using a chaotic Chen system. Another Chen system was then started with different initial values, which were converted to three series of numbers from...
متن کاملImage Encryption Based on Improved Chaotic Sequences
Image encryption is an active and challenging research area. This article proposes a transposing and scrambling image encryption algorithm based on improved hyper-chaotic sequence to provide enhanced security for encrypted image transmission. The algorithm processes the hyper-chaotic sequence according to the pixel information, which makes the keys be sensitive to original image. Then we apply ...
متن کاملImage Encryption using Block Based Uniform Scrambling and Chaotic Logistic Mapping
With the fast evolution of digital data exchange and increased usage of multi media images, it is essential to protect the confidential image data from unauthorized access. In natural images the values and position of the neighbouring pixels are strongly correlated. The proposed method breaks this correlation increasing entropy of the position and entropy of pixel values using block shuffling a...
متن کامل