Multimodal biometric profiling

Patent metadata

Field	Value
Publication number	US-9424478-B2
Application number	US-201414481331-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Apr 11, 2014
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

Multimodal biometric profiling may include receiving a cover image and a biometric template for a person. An indication of a security requirement related to biometric profiling for the person may be received. A threshold value may be determined based on the indicated security requirement. The threshold value may be used to limit a number of biometric template bits of the biometric template that are embedded in a predetermined bit position of a cover image pixel of the cover image based on cover image intensity associated with the predetermined bit position.

First claim

What is claimed is:

1. A multimodal biometric profiling system comprising:
at least one processor;
an input module, executed by the at least one processor, to receive a cover image and a biometric template for a person;
a security requirement determination module, executed by the at least one processor, to receive an indication of a security requirement related to biometric profiling for the person; and
a threshold determination module, executed by the at least one processor, to determine a threshold value based on the indicated security requirement, wherein the threshold value is to limit a number of biometric template bits of the biometric template that are embedded in a predetermined bit position of a cover image pixel of the cover image based on cover image intensity associated with the predetermined bit position.

2. The multimodal biometric profiling system according to claim 1 , wherein the security requirement includes one of high security, medium security, and low security, and a different security requirement corresponds to a different application of the multimodal biometric profiling system.

3. The multimodal biometric profiling system according to claim 1 , wherein the threshold value for a high security requirement is different from the threshold value for a medium security requirement.

4. The multimodal biometric profiling system according to claim 1 , wherein the limit on the number of biometric template bits of the biometric template that are embedded in the predetermined bit position of the cover image pixel of the cover image includes a determination of whether the cover image intensity indicates a high intensity cover image or a low intensity cover image.

5. The multimodal biometric profiling system according to claim 4 , wherein for a cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 ,
for the high intensity cover image, a maximum percentage of the cover image pixels that can be considered for embedding in the 6 th bit position is approximately H 6 T min to H 6 T max , and
for the low intensity cover image, a maximum percentage of the cover image pixels that can be considered for embedding in the 6 th bit position is approximately L 6 T min to L 6 T max ,
wherein H 6 T min , H 6 T max , L 6 T min , and L 6 T max are parameters that are based on a category of the cover image.

6. The multimodal biometric profiling system according to claim 5 , wherein H 6 T min , H 6 T max , H 6 T min , and L 6 T max are approximately 63%, 67%, 8%, and 11%, respectively.

7. The multimodal biometric profiling system according to claim 4 , wherein for a cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 ,
for the high intensity cover image, a maximum percentage of the cover image pixels that can be considered for embedding in the 5 th bit position is approximately H 5 T min to H 5 T max , and
for the low intensity cover image, a maximum percentage of the cover image pixels that can be considered for embedding in the 5 th bit position is approximately L 5 T min to L 5 T max ,
wherein H 5 T min , H 5 T max , L 5 T min , and H 5 T max are parameters that are based on a category of the cover image.

8. The multimodal biometric profiling system according to claim 7 , wherein H 5 T min , H 5 T max , L 5 T min , and L 5 T max are approximately 42%, 46%, 18%, and 21%, respectively.

9. The multimodal biometric profiling system according to claim 1 , further comprising:
a cover image partition module, executed by the at least one processor, to partition the cover image into a plurality of predetermined blocks;
a random sequence generation module, executed by the at least one processor, to generate a random sequence to randomize selection of cover image pixels of at least one of the blocks of the cover image; and
a biometric template bit embedding module, executed by the at least one processor, to embed a biometric template bit of the biometric template in an appropriate bit position of a cover image pixel of the at least one of the blocks of the cover image based on a total number of 1's in predetermined bit positions of the cover image pixel of the at least one of the blocks according to the randomized selection of the cover image pixels of the at least one of the blocks of the cover image.

10. The multimodal biometric profiling system according to claim 9 , wherein for a cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 , the predetermined bit positions of the cover image pixel include the 7 th and 8 th bit positions of the cover image pixel.

11. The multimodal biometric profiling system according to claim 9 , wherein for a cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 , the predetermined bit positions of the cover image pixel include the 6 th , 7 th , and 8 th bit positions of the cover image pixel.

12. The multimodal biometric profiling system according to claim 1 , further comprising:
a biometric template bit embedding module, executed by the at least one processor, to embed biometric template bits of the biometric template in appropriate bit positions of a cover image pixel of a block of the cover image based on determination of a total number of 1's in 7 th and 8 th bit positions of the cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 , wherein for a high security requirement,
in response to a determination that the total number of 1's in the 7 th and 8 th bit positions of the cover image pixel is 0, the biometric template bit embedding module is to embed the biometric template bits of the biometric template in 1 st and 2 nd bit positions of the cover image pixel of the block of the cover image,
in response to a determination that the total number of 1's in the 7 th and 8 th bit positions of the cover image pixel is 1, the biometric template bit embedding module is to embed the biometric template bits of the biometric template in 1 st , 2 nd , and 3 rd bit positions of the cover image pixel of the block of the cover image, and
in response to a determination that the total number of 1's in the 7 th and 8 th bit positions of the cover image pixel is 2, the biometric template bit embedding module is to embed the biometric template bits of the biometric template in 1 st , and if a counter value for a 6 th bit position of the cover image pixel of the block of the cover image is less than the threshold value, then in the 6 th bit position of the cover image pixel of the block of the cover image, and otherwise in the 2 nd bit position of the cover image pixel of the block of the cover image.

13. The multimodal biometric profiling system according to claim 1 , further comprising:
a biometric template bit embedding module, executed by the at least one processor, to embed biometric template bits of the biometric template in appropriate bit positions of a cover image pixel of a block of the cover image based on determination of a total number of 1 st , 6 th , 7 th and 8 th bit positions of the cover image pixel that is divided into a least part that includes bits 1 - 4 and a most part that includes bits 5 - 8 , wherein for a medium security requirement,
in response to a determination that the total number of 1's in the in 6 th , 7 th and a bit positions of the cover image pixel is 0, the biometric template bit embedding module is to embed the biometric template bits of the bio

Assignees

• Accenture Global Services Ltd

Inventors

• Gn Madhusudan
• Paul Sanjoy
• Gupta Deepmala

Classifications

• G06F21/00

  Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity · CPC title

• G06K2009/00953

  Physics · mapped topic

• G06T2201/0202

  whereby the quality of watermarked images is measured; Measuring quality or performance of watermarking methods; Balancing between quality and robustness · CPC title

• G06T2201/0051

  Embedding of the watermark in the spatial domain · CPC title

• H04L9/3231

  Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861) · CPC title