Spectral discrimination and spatial resolution from retinal chromatic blur images in color blind animals

Abstract

The visual perception mechanism of marine cephalopods such as octopus, with respect to “color blind camouflage” has not yet been revealed. The eyeball optics of these animals have longitudinal chromatic aberration, which result in blurred retinal image. Utilizing deconvolution image processing method to restore the chromatic blurred retinal images is proposed in order to obtain the ideal spectral images, which realizes spectral and spatial resolution. Simulation of a target for validating image restoration is implemented, and the results show that the method can effectively extract spectral images from the chromatic blur images. Although the vision of these animals is unlikely to have a cognitive function similar to image deconvolution, the proposed method may provide a technical approach for constructing novel bionic hyperspectral imaging systems.

Keywords:

• Cephalopod
• chromatic aberration
• color vision
• deconvolution
• spectral discrimination

Additional information

Funding

This research was supported by the National Natural Science Foundation of China [No. 61605169 and 31801619], Zhejiang Provincial Natural Science Foundation of China [No. LY19F050016 and LY18F050002], Shanghai Aerospace Science and Technology Innovation Fund [SAST2018-083], Zhejiang Provincial Key R&D Program of China [No. 2019C02050], Information Technology Center, Zhejiang University.