Optoelectronics Letters, Volume. 17, Issue 3, 187(2021)
Edge extraction and reconstruction of terahertz image using simulation evolutionary with the symmetric fourth order partial differential equation
Terahertz (THz) pulse imaging can be used for biomedicine, material, and food security. However, image quality is lower attributed to the THz time-domain spectroscopy system. Such as, noises and lower space resolution are presented in some THz images. To improve the THz image quality, we proposed a novel method which combining the simulation evolutionary with the symmetric fourth order partial differential equation. The image edge is first detected by using the simulation evolutionary. Then the symmetric fourth order partial differential equation (PDE) is applied on the non-edge image for noise reduction. Finally, the de-noise image is combined with the edge image obtained from the edge detection step. Experiments on four different THz images prove that the proposed method can preserve the edge information during noise reduction.
Get Citation
Copy Citation Text
PAN Xue-wen, ZHAO Quan-you, LIU Jian-jun. Edge extraction and reconstruction of terahertz image using simulation evolutionary with the symmetric fourth order partial differential equation[J]. Optoelectronics Letters, 2021, 17(3): 187
Received: May. 12, 2020
Accepted: Aug. 12, 2020
Published Online: Sep. 2, 2021
The Author Email: Jian-jun LIU (37644313@qq.com)