1 June 2001 Underwater image transmission and blurred image restoration
Author Affiliations +
Optical Engineering, 40(6), (2001). doi:10.1117/1.1364500
Because light is scattered and absorbed by seawater, the images obtained underwater are always blurry after transmitted through a certain distance. The point spread function (PSF) and modulation transfer function (MTF) are important properties of seawater to predict underwater light propagation and underwater image quality. We describe the laboratory facilities to measure the PSF and MTF of water body by the image transmission method and the restoration methods of underwater blurred images. The measured results are given and compared with the theories. The blurred images of a bar target transmitted through different water paths are restored with the measured MTF using a Wiener filter.
Zhishen Liu, Yifan Yu, Kailin Zhang, Hailong Huang, "Underwater image transmission and blurred image restoration," Optical Engineering 40(6), (1 June 2001). http://dx.doi.org/10.1117/1.1364500

Image transmission

Modulation transfer functions

Image restoration

Point spread functions

Optical transfer functions


Filtering (signal processing)

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