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This paper presents a novel invertible 3D maps based image encryption method. A 2D gray-level image is represented as an array of gray level values of the pixel, which can be considered as the third dimension. An invertible 3D maps are presented and utilized for image encryption. The proposed scheme combines the permutation and the substitution using the invertible 3D maps. All bits in the image data...
The contrast is low, and the noise is strong in infrared images, in order to resolve these problems, the Gray Adjustment Act and the Butterworth Filter were introduced. At first, characteristics of infrared images were analyzed. The frequency distribution of the defect region, the transition region and the normal region was concluded, and targets of image processing to every area were designed. According...
This paper proposes a new invertible two-dimensional map, called Line map, for image encryption and decryption. It maps an image to an array of pixels and then, maps it back from the array to a same sized image. A Line map consists of two submaps: the left Line map and the right Line map, which are used for image encryption and decryption. In order to overcome the shortcoming of conventional image...
In order to avoid the flaw while keeping all the merits of image encryption scheme based on line maps, an improved image encryption scheme is proposed, which extended the original 2D scheme to 3D. An image with size NtimesM is firstly depicted by a 3D bit matrix, and then it is supposed as composed of 8timesM vectors with size N. Line maps are used to stretch the vectors to an array, while the fold...
Considering the characteristics of the inconspicuous difference between targets and backgrounds and the low contrast in infrared images, an adaptive clustering algorithm based on fuzzy particle swarm optimization is used in the infrared image processing. Fuzzy C-mean (FCM) clustering algorithm is a local search algorithm because it is easily trapped local optimum and is sensitive to initial value...
According to the characteristic of pavement image, a new splicing method for pavement image based on scale invariant feature transform was proposed. The SIFT algorithm is used to detect the feature points, FCM clustering is used to find the most similitude cluster relative to the number of feature point, and match the feature descriptors in the cluster ,then the false feature points pair is rejected...
This paper proposes a new line map, which is an invertible chaotic two-dimensional map. The algorithm of the line map is formulated. An image encryption scheme based on the line map is developed that maps a image to a row of pixels and further fit to a same size image using the line map. The line map is generalized by using some parameters, the numbers of the left and the right line map, which are...
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