This ppt is on "Robust video data hiding". Includes intro, issues, challenges, motivation, design, implementation, result with snapshots, conclusion and future work. HOPE THIS HELPS !! :)

1. ROBUST VIDEO DATA
HIDING USING
FORBIDDEN ZONE DATA
HIDING AND SELECTIVE
EMBEDDING
Under the guidance of:
Prof. Rekha Patil
Team members:
Geeta S Savalgi
Pooja Lakha
Pooja S Patil

2. WHAT IS DATA SECURITY?
Protecting a database from
destructive forces and the
unwanted actions of
unauthorized users.
INTRODUCTION

3. DATA SECURITY TECHNOLOGIES
DISK
ENCRYPTION
HARDWARE BASED
MECHANISMS BACKUP
S
DATA
MASKING
DATA ERASUR

4. DATA HIDING
It is the process of embedding information into a host medium.
FORBIDDEN ZONE
It is defined as the host signal range where no alteration is allowed
during data hiding process.
 SELECTIVE EMBEDDING
Here host signal samples, which will be used in data hiding, are
determined adaptively. The selection is performed at four stages:
Frame selection, frequency band determination, block selection and
coefficient selection.
KEY TERMS USED IN PROJECT

5.  To achieve efficient data hiding in video sequence.
 To utilize systematic RA Codes to encode message
bits and frame bits.
 To allow handling de-synchronization between
embedder and decoder.
 To achieve certain level of robustness against frame
drop, repeat and insertion attacks.
 To use 3-D interleaving.
ISSUES AND CHALLENGES

6.  Successfully utilized in video data hiding
applications.
 Tamper detection in digital videos can be
performed efficiently.
 It is used in fragile applications such as
authentication.
 It provides excess control, copy control in DVD’s.
 Widely suitable for broader range of application.
APPLICATIONS

7.  The necessity for practical higher dimensional
data hiding codes.
 Adjusting trade-off between robustness(channel
code) and imperceptibility(source) by practical
means.
 Design of end-to-end real-life visual applications.
MOTIVATIONS

8.  During video data hiding the quality of the image
cannot be preserved.
 They cannot survive any format conversion or
transcoding, without any significant loss of perceptual
quality.
 Efficiently hide data in video and to preserve the
quality from the external attacks.
PROBLEM STATEMENT

9.  A new block based data hiding method which makes
use of erasure correction capability of repeat
accumulates codes.
 Uses superiority of forbidden zone for low embedding
distortion levels.
 Robust to frame manipulation attacks via frame
synchronization markers.
SCOPE OF WORK

10. The goal of the design process is to
produce a model of a system which can be
used later to build that system and use this
model to build the overall system.
DESIGN

11.  Parallel decoders are used to correct de-sync.
 The video data hiding methods utilize uncompressed video
data where insertions and erasures occur at decoder, causing
de-sync.
 Multiple hronization errors.
 This scheme is successful only when the number of selected
host signal samples is much less than the total number of
host signal samples.
EXISTING SYSTEM

12. ARCHITECTURE of proposed
system
EMBED
MESSAGE DATA FILE
OUTPUT FILE
MASTER FILE
ENCODEDVIDEO
COMPRESSION AND ENCRYPTION
DECODE
UNCOMPRESSION DECRYPTION
COMPRESSION AND
ENCRYPTION CHECK
ENCODEDVIDEO
RECEIVED
DECODED FILE
MESSAGE OR DATA FILE
SENDER
RECEIVER

13. ENCODER
DECODER

14. Substitute bytes
Shift rows
Add round key
Mix columns
Substitute bytes
Add round key
Mix columns
Shift keys
Add round key
Shift keys
Substitute bytes
Add round key
Add round key
Inverse mix columns
Add round key
Inverse sub bytes
Inverse shift rows
Inverse mix columns
Add round key
Inverse shift bytes
Inverse shift rows
Add round key
Inverse shift bytes
Inverse shift rows
EXPAND KEY
W(0,3)
KEY
Round 9 .
Round 10
Round 1
Round 9
ound 1

15. Implementation is the stage of the project when the
theoretical design is turned out into a working system.
The implementation stage involves careful planning,
investigation of the existing system and it’s constraints.
IMPLEMENTATION

16. Frame selection is performed and the selected
frames are processed block-wise.
The selection is performed at four stages:
 Frame selection
 Frequency band determination
 Block selection
 Coefficient selection
ENCRYPTION MODULE

17. Let fcur and fpre denote the current and previous
frame indices
 fcur > T, then skip this frame.
 If fcur = fpre, then skip this frame.
 Otherwise, process the current frame.
 fcur< fpre, then the end of the group of frames is
reached.
DECRYPTION MODULE

18. System flow diagram
System flow
Embed data
Spread frames
Actual video
User give input Msg or data as Data embedded video
input
Spread a video Encrypted video
Decrypt a video View original data or
msg
Encryption
Decryption

19. results

24.  New video data hiding framework that makes use of erasure
correction capability of RA codes and superiority of FZDH.
 It robust to frame manipulation attacks via frame
synchronization markers.
 Typical system parameter are reported for error-free decoding.
 The results indicate that the framework can be successfully
utilized in video data hiding applications.
 User cannot find the original data.
 It increases the security.
Conclusion

25.  Incorporation of human visual system based spatio
temporal adaption of data hiding method
parameters.
 New multilevel embedding technique .
 Increase block size to embed more data.
 Improve commercialization.
FUTURE WORK

26. THANK YOU FOR
YOUR
ATTENTION !