---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Color and texture data have been the primitive image or picture descriptors in substance or content based picture recovery frameworks. In this article, a technique is introduced for image or picture mining taking into account examination of shading...

Previous efforts involving picture-based passwords have not focused on maintaining a measurably high level of entropy. Since password systems usually allow user selection of passwords, their true entropy remains unknown. A 23-participant study was performed in which picture and character-based passwords of equal strength were randomly assigned. Memorability was tested with up to one week betwee...