Title :
A Data Hiding Technique for JPEG Color Images by One-Dimensional Spectrum Modification
Author_Institution :
Dept. of Electr. & Comput. Eng., Purdue Univ., Hammond, IN
Abstract :
A method of hiding data in images for applications such as carrying identification and authorization information in a picture or logo is proposed. By converting a JPEG-compressed color image to a one-dimensional signal in R, G, or B and using an arbitrary sampling rate of 16 kHz, masked frequencies in the 1-D signal are determined for each segment or block. Imperceptible hiding of given data is carried out by modifying the spectral power at a pair of commonly occurring masked frequencies. Preliminary results show that the spectrum modification technique is simple to process with barely noticeable distortion in the data-embedded image. Using an oblivious technique and a key consisting of the frequencies where spectrum is modified, successful data retrieval with no bit errors has been observed. Embedded image corrupted by low level noise still retained the hidden data with low bit errors
Keywords :
data compression; data encapsulation; image colour analysis; image retrieval; image segmentation; 16 kHz; JPEG color image compression; authorization information; data hiding technique; data retrieval; one-dimensional spectrum modification; spectral power; Authorization; Color; Data encapsulation; Frequency conversion; Image converters; Image sampling; Image segmentation; Information retrieval; Noise level; Signal sampling;
Conference_Titel :
Industrial Electronics, 2006 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0496-7
Electronic_ISBN :
1-4244-0497-5
DOI :
10.1109/ISIE.2006.295534
