Design of LDPC Decoder Based On FPGA in Digital Image Watermarking Technology
Abstract: LDPC code and
digital image watermarking technology, which is an effective method of digital copyright
protection and information security, has been widely used. But this is a
multi-disciplinary, multi technology application scheme. In order to realize
FPGA design of LDPC decoder in the application scheme, an effective
implementation method of digital watermarking application system must be found.
In this paper, MATLAB software and Qt development environment are combined to
achieve the digital watermarking application software design. It could get
real-time input data for the LDPC decoder. Then the hardware of the LDPC
decoder is primarily implemented by FPGA in the digital image watermarking system.
And the serial port is used to make the output data of the decoder back to
computer for verification. Through the simulation results, the Modelsim time
simulation diagram is given, and the watermark image compared with the original
image is got. The results show that the resource usage of our system is few,
and the decoding rate is fast. It has a certain practical value.
Author: Zhongxun Wang,
Tiantian Tang
Journal Code: jptkomputergg170123
