Patent ID: 8675956
Filing Date: 2014-03-18
Classification: G06T

Abstract:
1. A method for verifying making time of a file by computer, comprising: calling TWAIN protocol interfaces of a scanner for obtaining original color data both of an object file and a sample file, wherein making time of said sample file is known; sampling color points of said original color data of said object file thereby calculating color index data of said object file; and sampling color points of said original color data of said sample file thereby calculating color index data of said sample file; and comparing said color index data of said object file with said color index data of said sample file, and determining making time of said object file based on said known making time of said sample file; wherein comparing said color index data of said object file with said color index data of said sample file, and determining making time of said object file based on said known making time of said sample file, comprises: if determining said object file having the same making time as said sample file; or else determining said object file having a different making time from said sample file; wherein said character C j is representative of the color index data of said object file, said character C y is representative of the color index data of said sample file, said character A is representative of the designated index data; in the situation that making time of said object file is different form that of said sample file, if C