Pixel value access control (PVAC) was introduced to deliver a secure and simple graphical password method where it requires users load their image as password. PVAC extracts the obtain three-octet 8-bits Red-Green-Blue (RGB) its authenticate user. The pixel must be matched with record stored in database or otherwise, user is failed authenticate. However, which prefer store images on cloud stora...

In contrast to time series, graphical data is indexed by the vertices and edges of a graph. Modern applications such as internet, social networks, genomics proteomics generate data, often at large scale. The scale argues for need compress storage subsequent processing. Since this might have several components available in different locations, it also important study distributed compression data...