Abstract
Algorithmic mechanisms are used
to improve terahertz (THz) image quality, which is critical to a
biological sample analysis. A complete mechanism for the
super-resolution reconstruction and evaluation of THz biological
sample images was constructed
in this study. With eucalyptus leaves as an example, the THz spectral
region screening technique was adopted to select the characteristic
frequencies for imaging, and the THz single-frequency images were
reconstructed with the single-image super-resolution image
reconstruction technique. The THz super-resolution reconstructed
images without ideal reference were evaluated after the introduction
of three no-reference image evaluation criteria considering the
diversity and complexity of organisms. The results show that the THz
image reconstruction mechanism proposed in this study led to an
increase in resolution and a decrease in noise. At the same
time, the imaging quality of biological samples was considerably
improved, and the detailed information was enriched. These provide a
reference for a THz imaging analysis of leaves and other biological
samples.
Funder
National Natural Science Foundation of
China
Natural Science Foundation of
Chongqing
Fundamental Research Funds for the
Central Universities
Chongqing Overseas Returnees Innovation
and Entrepreneurship Project
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering