2007
DOI: 10.1016/j.optcom.2007.05.065
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Information hiding for digital holograms by electronic partial encryption methods

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Cited by 18 publications
(13 citation statements)
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“…The obtained image (DC coefficients) is then 2DDWT'ed in the next step. As can see in the previous research [11], the result from encrypting LH subband shows the best efficiency. By considering the fact mentioned previously and examining various cases, we decided to choose the subband combinations to be encrypted as follow, which is on the assumption that 6-level MDWT is performed.…”
Section: B Hybrid Encryption Algorithmsupporting
confidence: 56%
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“…The obtained image (DC coefficients) is then 2DDWT'ed in the next step. As can see in the previous research [11], the result from encrypting LH subband shows the best efficiency. By considering the fact mentioned previously and examining various cases, we decided to choose the subband combinations to be encrypted as follow, which is on the assumption that 6-level MDWT is performed.…”
Section: B Hybrid Encryption Algorithmsupporting
confidence: 56%
“…In the first step, a DCT is applied to each digital hologram. The DCT was successfully applied to digital hologram encryption [11]. In the next step, called "merging", DC coefficients belonging to different segmentation images are grouped into blocks which are DWT'ed.…”
Section: B Hybrid Encryption Algorithmmentioning
confidence: 99%
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“…Moreover, one of the main advantages of digital holography is the convenience and flexible to implement in microscopy and measurement process considering the image storage, numerical reconstruction and transmission. Therefore, digital holography has been paid a wide attention in recent years [3][4][5][6][7][8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…최근에는 DWPT(discrete wavelet packet transform)을 이용하여 에너지 집중도가 높은 주파 수 대역을 탐색한 후에 해당 영역을 암호화하는 기법도 개 발되었다 [7] . [8] .…”
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