Smart City Gnosys
Smart city article details
| Title | Reversible Image Resolution Degradation Supporting Privacy Protection And Usability Management In The Cloud For Smart Cities |
|---|---|
| ID_Doc | 46416 |
| Authors | Zhao R.; Su M.; Li F.; Zhang Y.; Zhu Y.; Zhang Y. |
| Year | 2025 |
| Published | Expert Systems with Applications, 265 |
| DOI | http://dx.doi.org/10.1016/j.eswa.2024.125851 |
| Abstract | The concept of smart cities has been applied in the process of urban modernization and informatization to promote the sustainability of cities and societies, enhancing the well-being of residents. The ubiquitous visual sensors in smart cities contribute to the central understanding of the urban environment and constitute one of the foundations of urban informatization. However, this has also resulted in the recording of residents’ privacy information within the city. Currently, some methods based on image encryption have been proposed to protect the privacy of images. However, these schemes sacrifice the visual usability inherent in the images, further hindering the management of smart cities based on images. In this work, we propose a reversible resolution degradation scheme to balance image privacy protection and usability management in smart cities. The visual effect of the degraded image resembles a mosaic effect, and the balance between privacy and usability can be adjusted through the block size. In addition, to enhance security, we introduced the concept of the one-time pad. Before each image processing, a new key is derived based on the advanced encryption standard and a hash function. The experiments validated the effectiveness of the proposed method in balancing privacy protection and usability, and it also demonstrated the visual effects in the cloud. © 2024 |
| Author Keywords | Cloud; Image encryption; Privacy; Smart city |
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