scholarly journals A Biomimetic Model of Adaptive Contrast Vision Enhancement from Mantis Shrimp

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4588
Author(s):  
Binbin Zhong ◽  
Xin Wang ◽  
Xin Gan ◽  
Tian Yang ◽  
Jun Gao
Keyword(s):  
Compound Eye ◽  
Polarized Light ◽  
Field Of View ◽  
Mantis Shrimp ◽  
Adjustment Mechanism ◽  
Pixel Array ◽  
Visual Tasks ◽  
Contrast Vision ◽  
Image Enhance ◽  
Point To Point

Mantis shrimp have complex visual sensors, and thus, they have both color vision and polarization vision, and are adept at using polarization information for visual tasks, such as finding prey. In addition, mantis shrimp, almost unique among animals, can perform three-axis eye movements, such as pitch, yaw, and roll. With this behavior, polarization contrast in their field of view can be adjusted in real time. Inspired by this, we propose a bionic model that can adaptively enhance contrast vision. In this model, a pixel array is used to simulate a compound eye array, and the angle of polarization (AoP) is used as an adjustment mechanism. The polarization information is pre-processed by adjusting the direction of the photosensitive axis point-to-point. Experiments were performed around scenes where the color of the target and the background were similar, or the visibility of the target was low. The influence of the pre-processing model on traditional feature components of polarized light was analyzed. The results show that the model can effectively improve the contrast between the object and the background in the AoP image, enhance the significance of the object, and have important research significance for applications, such as contrast-based object detection.

Regionally different ommatidial structure in the compound eye of the water-flea Polyphemus (Cladocera, Crustacea)

1983 ◽  
Vol 217 (1207) ◽  
pp. 177-189 ◽  
Keyword(s):  
Compound Eye ◽  
Polarized Light ◽  
Small Animal ◽  
Pigment Cells ◽  
Compound Eyes ◽  
Water Flea ◽  
Edge Type ◽  
Different Types ◽  
Visual Tasks ◽  
Ventral Edge

The two compound eyes of Polyphemus pediculus are completely fused in the midline to form a single integrated unit containing 130 ommatidia with four different types of rhabdoms. The general features of the eye include a cuticle lacking corneal lenses, crystalline cones composed of five cells and the presence of juxtacrystalline cells and distal pigment cells. The rhabdoms are fused and the palisade, when present, is a part of the extracellular space in which the rhabdom is suspended. Four different types of rhabdoms were found zonally arranged in the eye. (i) A foveal type, in the dorsofrontal region of the eye, is characterized by its long and slender shape. (Only five retinula cells contribute to forming this irregularly layered rhabdom, with the first layer composing the distal half of the rhabdom.) (ii) A second type, located ventrally to the fovea, is conventionally layered and is formed by six retinula cells, one of which is aberrant. (iii) A dorsolateral type is continuous (unlayered) and formed by six retinula cells of which one is aberrant. (iv) A dorsal and ventral edge type is wide and short, and lacking palisade. Six retinula cells contribute to the continuous rhabdom and two of these are aberrant with tiny rhabdomeres. The foveal type of rhabdom has a peculiar arrangement of the microvilli, which is thought to depress the sensitivity to vertically polarized light. This mechanism is believed to enhance the ability to detect prey. The zoned eye, with its specialized receptive apparatus, is interpreted as an adaptation for coping with a diversity of visual tasks by a very small animal.

Stomatopod Vision

2017 ◽  
Author(s):  
Thomas W. Cronin ◽  
N. Justin Marshall ◽  
Roy L. Caldwell
Keyword(s):  
Compound Eye ◽  
Visual Fields ◽  
Polarized Light ◽  
Image Features ◽  
Compound Eyes ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Mantis Shrimp ◽  
Single Compound ◽  
Unique Capability

The predatory stomatopod crustaceans, or mantis shrimp, are among the most attractive and dynamic creatures living in the sea. Their special features include their powerful raptorial appendages, used to kill, stun, or disable other animals (whether predators, prey, or competitors), and their highly specialized compound eyes. Mantis shrimp vision is unlike that of any other animal and has several unique features. Their compound eyes are optically triple, each having three separate regions that produce overlapping visual fields viewing certain regions of space. They have the most diverse set of spectral classes of receptors ever described in animals, with as many as 16 types in a single compound eye. These receptors are based on a highly duplicated set of opsin molecules paired with strongly absorbing photostable filters in some photoreceptor types. The receptor set includes six ultraviolet types, all spectrally distinct, many themselves tuned by photostable filters. There are as many as eight types of polarization receptors of up to three spectral classes (including an ultraviolet class). In some species, two sets of these receptors analyze circularly polarized light, another unique capability. Stomatopod eyes move independently, each capable of visual field stabilization, image foveation and tracking, or scanning of image features. Stomatopods are known to recognize colors and polarization features and evidently use these in predation and communication. Altogether, mantis shrimps have perhaps the most unusual vision of any animal.

The compound eyes of mantis shrimps (Crustacea, Hoplocarida, Stomatopoda). I. Compound eye structure: the detection of polarized light

1991 ◽  
Vol 334 (1269) ◽  
pp. 33-56 ◽  
Keyword(s):  
Compound Eye ◽  
Polarized Light ◽  
Structural Features ◽  
Polarization Sensitivity ◽  
Compound Eyes ◽  
Visual Tasks ◽  
Retinular Cells ◽  
High Degree ◽  
Structural Adaptations ◽  
Parallel Sampling

Stomatopod crustaceans possess compound eyes divided into three distinct regions: two peripheral retinae - the dorsal and ventral hemispheres — and the mid-band. Throughout the eye, in particular in the midband, there are many structural adaptations that potentially enable different portions of the eye to perform different visual tasks. A high degree of optical overlap between these eye regions allows the parallel sampling of various parameters of light from one direction in space. In consecutive papers, we present structural evidence that stomatopods have the receptors necessary for colour and polarization vision. The first paper describes the retinal structures that suggest the existence of polarization sensitivity in stomatopods. mid-band rows five and six, together with the hemispheres, are probably involved in this visual process. By using two strategies, rhabdomal modification and varying the orientation of similar ommatidial units in the three eye regions, stomatopods have the capacity to analyse polarized light in a very detailed manner. All the species included in this study live in shallow, tropical waters where polarized light signals are abundant. It therefore seems likely that their eyes have evolved to take advantage of such environmental cues. Structural evidence also suggests that all retinular cells in rows one to four of the mid-band, and the distal most retinular cells (R8) over most of the retina, are not sensitive to polarized light. These mid-band rows are instead adapted for colour detection. This function of the stomatopod retina and structural features concerned with colour sensitivity are described in paper II ( Phil. Trans. R. Soc. Lond. B 334, 57—84 (1991)).

Fabrication of Artificial Compound Eye with Controllable Field of View and Improved Imaging

2020 ◽  
Vol 12 (7) ◽  
pp. 8870-8878 ◽  
Author(s):  
Jiang Li ◽  
Wenjun Wang ◽  
Xuesong Mei ◽  
Dongxiang Hou ◽  
Aifei Pan ◽  
...  
Keyword(s):  
Compound Eye ◽  
Field Of View

Study of Large Field of View Compound-eye Orientation Technology

2016 ◽  
Vol 45 (5) ◽  
pp. 512003
Author(s):  
郭书基 GUO Shu-ji ◽  
史立芳 SHI Li-fang ◽  
曹阿秀 CAO A-xiu ◽  
吴向东 WU Xiang-dong ◽  
邓启凌 DENG Qi-ling
Keyword(s):  
Compound Eye ◽  
Field Of View ◽  
Large Field

Subtle control on hierarchic reflow for the simple and massive fabrication of biomimetic compound eye arrays in polymers for imaging at a large field of view

2016 ◽  
Vol 4 (1) ◽  
pp. 108-112 ◽  
Author(s):  
Mengjia Wang ◽  
Taisheng Wang ◽  
Honghai Shen ◽  
Jingli Zhao ◽  
Zhiyou Zhang ◽  
...  
Keyword(s):  
Compound Eye ◽  
Field Of View ◽  
Large Field ◽  
Micro Fabrication

In this work, a hierarchic reflow method is demonstrated for the monolithic micro-fabrication of biomimetic compound eye arrays.

A compact bionic compound eye camera for imaging in a large field of view

2021 ◽  
Vol 135 ◽  
pp. 106705
Author(s):  
Yuanyuan Wang ◽  
Chengyong Shi ◽  
Huangrong Xu ◽  
Yuanjie Zhang ◽  
Weixing Yu
Keyword(s):  
Compound Eye ◽  
Field Of View ◽  
Large Field

scholarly journals Catadioptric planar compound eye with large field of view

2018 ◽  
Vol 26 (10) ◽  
pp. 12455 ◽  
Author(s):  
Huaxia Deng ◽  
Xicheng Gao ◽  
Mengchao Ma ◽  
Yunyang Li ◽  
Hang Li ◽  
...  
Keyword(s):  
Compound Eye ◽  
Field Of View ◽  
Large Field

Digital Structural Design and Research of Optical Microscope

2014 ◽  
Vol 527 ◽  
pp. 190-196
Author(s):  
Yun Xiao Shan
Keyword(s):  
Electric Motor ◽  
Structural Design ◽  
Materials Science ◽  
Science Research ◽  
Optical Microscope ◽  
Field Of View ◽  
Objective Lens ◽  
Adjustment Mechanism ◽  
Acquisition Device ◽  
To Come

The article has been discussed that it adopts step-by-step electric motor to come to auto-control through reforming the carrier and the objective lens£¬the design of the image acquisition device£¬adjustment mechanism of the Imaging lens is designed by adding the step-by-step electric motor pretending to realize high focusing accuracy and brings forward innovation design about the auto alignment device in micro field of view. This project aims to improve the ordinary microscopes and develop the digital acquisition system of the microscopic image which can accurately acquire the image information. It also can be wildly used in areas such as biomedicine, materials science, research experiments and so on.

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