FPGA Based Non Uniform Illumination Correction in Image ...

Abhishek Acharya,Rajesh Mehra,Vikram Singh Takher, Int. J. Comp. Tech. Appl., Vol 2 (2), 349-358
ISSN:2229-6093
AHE in real time. The Xilinx System
Generator, embedded in MATLAB
Simulink was used to program the model
and test in the FPGA board using the
hardware co-simulation feature tools.
See the comparison Table 1 for
comparison.
8. Future Scope & Recommendations
XSG is a very useful tool for developing
computer vision algorithms. It could be
described as a timely, advantageous
option for developing in a much more
comfortable way than that permitted by
hardware description languages (HDLs).
The purpose of this paper was to
demonstrate the use of System Generator
to correct the uneven illumination for
image and video processing. This design
is implemented in the device Spartan 3
(xc3s200-5ft256) and Virtex II Pro
(Virtex 2 Pro xc2vp7- 6ff672). Further
some more variants of histogram
equalization can be used. The size of
image under consideration was
1024x1024 maximum, which can be
extended to bigger size. Nature inspired
computing can also be employed to
enhance the quality of image due to
uneven illumination.
Acknowledgement
The authors would like to thank Dr. S.
Chatterji, Professor and Head,
Electronics & Communication
Engineering Department, NITTTR,
Chandigarh for constant encouragement
and guidance during this research work.
Author would also like to express
gratitude towards Sh. O. S. Khanna,
Associate Professor in the Department of
Electronics & Communication
Engineering for giving valuable
suggestions time to time.
Table 1: Resources of FPGA used in the implementation of
Non Uniform Illumination Correction Algorithm
Resources Under
Consideration
Spartan 3 xc3s200-5ft256
Virtex 2 Pro xc2vp7-6ff672
Used Available Used Available
Number of Slices 301 1920 296 4928
Number of Slice Flip Flop 440 3840 432 9856
Number of 4 input LUTs 535 3840 529 9856
Number of Bonded IOBs 73 173 69 396
Maximum Frequency 128.54 MHz 151.057 MHz
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