Patent ID: 7719717
Filing Date: 2010-05-18
Classification: H04N

Abstract:
1. A computer-readable recording medium on which a computer executable program for image processing is recorded for reproducing a file generated by an image recording apparatus, the computer executable program causing a controller to execute steps comprising: receiving image data and converting the image data into primary data having an N-bit range according to a first gradation conversion characteristic; converting the same image data into secondary data having an M-bit range according to a second gradation conversion characteristic that is lower in a degree of level compression than the first gradation conversion characteristic or that causes no level compression, where M is greater than N; receiving the primary data and the secondary data and calculating dissimilarity between the primary data and the secondary data according to each position of each pixel and using data regarding the calculated dissimilarity to output tertiary data; recording the primary data and the tertiary data in the file reading the primary data and the tertiary data from the file; and reproducing the secondary data based on the primary data and the tertiary data read from the file.