PRESERVING IMAGE PRIVACY WHEN MANIPULATED BY CLOUD SERVICES

摘要

Cloud service includes that middleware receives original image when saving the device and method privacy manipulation of image, and separation original part image is divided into subgraph, has some the original image that value is less than rgb pixel value in the subgraph of rgb pixel value. By the way that the encryption key stream of the subgraph and the subgraph of rgb pixel value is added. The cloud service sub-image data is transmitted to such as social or photo sharing site, these manipulation images are by changing size, shearing, filtering, etc.. The sub-image data is received by middleware and is successfully decrypted, but regardless of performed operation cloud service. In another embodiment, the original image permutatation of this block, works as encryption, is then decrypted when reversed permutatation.