Coded digital image data recording method for long duration image archiving field, involves writing, for each data to be recorded, coded writing areas in selected density level susceptible to be restored and lower than row of initial base

摘要

#CMT# #/CMT# The method involves writing, for each data to be recorded, a set of coded writing areas (716, 816) in a selected density level susceptible to be restored and lower than a row of an initial base. The density level of each area is associated in a bi-unique manner to a coded digital value in another row base corresponding to a number of a selected gray or density levels. The value of the data to be recorded is based on a univalent function of digital values of the writing areas (716). #CMT#USE : #/CMT# Used in a field of archiving of a long duration image for recording coded digital image data in an initial base of a row greater than a number of writing levels susceptible to be restored from a recording medium (claimed) e.g. magnetic recording medium and photographic medium such as film, inkjet paper, heat-sensitized paper, photo paper and magnetic recording medium, which is read by a reading equipment. #CMT#ADVANTAGE : #/CMT# The method allows recording the digital data coded in the row base greater than the depth of the recording medium, and allows recording any type of digital data on any type of recording medium with several density levels. The method also ensures direct and optimal visual recognition of semantic or pictorial content of the recorded data to prevent the possibility of decoding of the digital information. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an illustration for recording data. 716, 718 : Coded writing areas.