A new scheme of image data hiding based on EBCOT of JPEG2000 lossy compression

Abstract

In the EBCOT stage of JPEG2000, data lossy are incurred twice on an image. Oncefrom bits discard in quantization and another, from entropy coding. Therefore, the proposed new scheme for large-capacity data hiding will hide data in the compressed bitstreams after EBCOT to avoid data lossy. Layer optimization is then used to increase the lengths of bitstreams for hiding. A fake bitrate br is repeatedly readjusted to force the reassignments of bits in the last layer to manipulate these lengths. Experimental results proved that the amounts of data-to-hide can be manipulated, larger amounts can be hidden and the amount-to-hide easy to calculate.