Analog backup of digital images and image restoration therefrom
An apparatus for backing up a digitally stored image includes a substrate on which the image and digital restoration data corresponding to the digitally stored image are printed on the substrate. The apparatus may be scanned to restore the image printed thereon to its original digital form.
1. An apparatus for backing up a digitally stored image comprising at least one substrate; wherein said image and digital restoration data corresponding to said digitally stored image are printed on said at least one substrate;
said digital restoration data comprising one or more reference color patches corresponding to colors used in printing said image;
wherein each of said reference color patches is printed in association with an identifier that identifies an original color space value of a corresponding said reference color patch.
2. A system for backing up digitally stored images, said system comprising:
a data storage subsystem;
a printer; and
a computer subsystem; wherein said computer subsystem is configured to:
retrieve at least one digitally stored image from said data storage subsystem;
cause said printer to print said image on a desired substrate; and
cause said printer to print digital restoration data corresponding to said digitally stored image on said substrate together with said image, said digital restoration data comprising one or more reference color patches corresponding to colors used in printing said image;
wherein said reference color patches further comprise printed characters corresponding to original color space values of said patches.
3. A method of backing up a digitally stored image, said method comprising:
printing said image on a desired substrate;
printing digital restoration data corresponding to said digitally stored image on said substrate together with said image, said digital restoration data comprising one or more reference color patches corresponding to colors used in printing said image;
scanning said substrate to obtain a scanned version of said image;
obtaining a colorimetry of said scanned version of said image;
scanning printed characters corresponding to original color values of said color reference patches;
creating a transformation function from said colorimetry and said corresponding original color values; and
using said transformation function to restore a said scanned version of said image to an original coloring of said original digital stored image.
4. An apparatus for backing up a digitally stored image comprising at least one substrate; wherein said image and digital restoration data corresponding to said digitally stored image are printed on said at least one substrate;
said digital restoration data comprising one or more reference color patches corresponding to colors used in printing said image;
wherein said digital restoration data further comprises and identification of a type of printer and inks used by that printer to print said image and reference color patches.
5. The method of claim 3 , further comprising scanning printed metadata for an image that was printed in association with said image and electronically storing said metadata with said scanned version of said image.