The Experts below are selected from a list of 126 Experts worldwide ranked by ideXlab platform
Dengpan Ye - One of the best experts on this subject based on the ideXlab platform.
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secure Fractal image coding based on Fractal Parameter encryption
Fractals, 2009Co-Authors: Shiguo Lian, Xi Chen, Dengpan YeAbstract:In recent work, various Fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of Fractal encoded images have been provided. In this paper, a secure Fractal image coding scheme is proposed and evaluated, which encrypts some of the Fractal Parameters during Fractal encoding, and thus, produces the encrypted and encoded image. The encrypted image can only be recovered by the correct key. To maintain security and efficiency, only the suitable Parameters are selected and encrypted through investigating the properties of various Fractal Parameters, including Parameter space, Parameter distribution and Parameter sensitivity. The encryption process does not change the file format, keeps secure in perception, and costs little time or computational resources. These properties make it suitable for secure image encoding or transmission.
Kwokwo Wong - One of the best experts on this subject based on the ideXlab platform.
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cryptanalysis on secure Fractal image coding based on Fractal Parameter encryption
Fractals, 2012Co-Authors: Chinghung Yuen, Kwokwo WongAbstract:The vulnerabilities of the selective encryption scheme for Fractal image coding proposed by Lian et al.1 are identified. By comparing multiple cipher-images of the same plain-image encrypted with different keys, the positions of unencrypted Parameters in each encoded block are located. This allows the adversary to recover the encrypted depth of the quadtree by observing the length of each matched domain block. With this depth information and the unencrypted Parameters, the adversary is able to reconstruct an intelligent image. Experimental results show that some standard test images can be successfully decoded and recognized by replacing the encrypted contrast scaling factor and brightness offset with specific values. Some remedial approaches are suggested to enhance the security of the scheme.
Shiguo Lian - One of the best experts on this subject based on the ideXlab platform.
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secure Fractal image coding based on Fractal Parameter encryption
Fractals, 2009Co-Authors: Shiguo Lian, Xi Chen, Dengpan YeAbstract:In recent work, various Fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of Fractal encoded images have been provided. In this paper, a secure Fractal image coding scheme is proposed and evaluated, which encrypts some of the Fractal Parameters during Fractal encoding, and thus, produces the encrypted and encoded image. The encrypted image can only be recovered by the correct key. To maintain security and efficiency, only the suitable Parameters are selected and encrypted through investigating the properties of various Fractal Parameters, including Parameter space, Parameter distribution and Parameter sensitivity. The encryption process does not change the file format, keeps secure in perception, and costs little time or computational resources. These properties make it suitable for secure image encoding or transmission.
Chinghung Yuen - One of the best experts on this subject based on the ideXlab platform.
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cryptanalysis on secure Fractal image coding based on Fractal Parameter encryption
Fractals, 2012Co-Authors: Chinghung Yuen, Kwokwo WongAbstract:The vulnerabilities of the selective encryption scheme for Fractal image coding proposed by Lian et al.1 are identified. By comparing multiple cipher-images of the same plain-image encrypted with different keys, the positions of unencrypted Parameters in each encoded block are located. This allows the adversary to recover the encrypted depth of the quadtree by observing the length of each matched domain block. With this depth information and the unencrypted Parameters, the adversary is able to reconstruct an intelligent image. Experimental results show that some standard test images can be successfully decoded and recognized by replacing the encrypted contrast scaling factor and brightness offset with specific values. Some remedial approaches are suggested to enhance the security of the scheme.
Xi Chen - One of the best experts on this subject based on the ideXlab platform.
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secure Fractal image coding based on Fractal Parameter encryption
Fractals, 2009Co-Authors: Shiguo Lian, Xi Chen, Dengpan YeAbstract:In recent work, various Fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of Fractal encoded images have been provided. In this paper, a secure Fractal image coding scheme is proposed and evaluated, which encrypts some of the Fractal Parameters during Fractal encoding, and thus, produces the encrypted and encoded image. The encrypted image can only be recovered by the correct key. To maintain security and efficiency, only the suitable Parameters are selected and encrypted through investigating the properties of various Fractal Parameters, including Parameter space, Parameter distribution and Parameter sensitivity. The encryption process does not change the file format, keeps secure in perception, and costs little time or computational resources. These properties make it suitable for secure image encoding or transmission.
