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Digital image encryption techniques for wireless sensor networks using image transformation methods: DCT and DWT

机译:使用图像转换方法的无线传感器网络的数字图像加密技术:DCT和DWT

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摘要

Confidentiality in storing and transmitting images is needed for different fields such as medical, military, online personal albums, confidential communications and video conferencing, etc. Many image encryption techniques are proposed to ensure confidentiality of data. Digital images are different from text data as they have more data, higher data redundancy and correlation between image pixels. In wireless sensor networks (WSN), many encryption techniques are proposed. Sensor nodes have limited resources in memory, energy and processing capabilities; therefore, the proposed techniques must consider these limitations. However, most of the proposed techniques are not applicable for digital images due to image structure and size; therefore, the traditional cryptosystems can not be applied on WSN. In this paper, the following two digital images transformation techniques: (1) discrete cosine transform and (2) discrete wavelet transform are used to propose digital images encryption techniques for WSN.
机译:对于不同领域(例如医疗,军事,在线个人相册,机密通信和视频会议等),需要在存储和传输图像时保持机密性。提出了许多图像加密技术以确保数据的机密性。数字图像与文本数据不同,因为它们具有更多的数据,更高的数据冗余度和图像像素之间的相关性。在无线传感器网络(WSN)中,提出了许多加密技术。传感器节点的内存,能源和处理能力资源有限;因此,提出的技术必须考虑这些限制。然而,由于图像的结构和大小,大多数提出的技术不适用于数字图像。因此,传统的密码系统无法应用于WSN。在本文中,以下两种数字图像变换技术:(1)离散余弦变换和(2)离散小波变换用于提出WSN的数字图像加密技术。

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