With the rise of mobile robotics, including self-driving automobiles and drones, developing artificial vision for high-contrast and high-acuity imaging in vertically uneven illumination conditions has become an important goal. In such situations, balancing uneven illumination, improving image contrast for facile object detection, and achieving high visual acuity in the main visual fields are key requirements. Meanwhile, in nature, cuttlefish (genus Sepia ) have evolved an eye optimized for vertically uneven illumination conditions, which consists of a W-shaped pupil, a single spherical lens, and a curved retina with a high-density photoreceptor arrangement and polarized light sensitivity. Here, inspired by the cuttlefish eye, we report an artificial vision system consisting of a W-shaped pupil, a single ball lens, a surface-integrated flexible polarizer, and a cylindrical silicon photodiode array with a locally densified pixel arrangement. The W-shaped pupil integrated on the ball lens balances vertically uneven illumination, and the cylindrical silicon photodiode array integrated with the flexible polarizer enables high-contrast and high-acuity imaging.

中文翻译：

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受墨鱼眼启发的人工视觉，可在不均匀光照条件下实现高质量成像

随着包括自动驾驶汽车和无人机在内的移动机器人技术的兴起，开发在垂直不均匀光照条件下进行高对比度和高敏锐度成像的人工视觉已成为一个重要目标。在这种情况下，平衡照明不均匀、提高图像对比度以轻松检测物体以及在主要视野中实现高视敏度是关键要求。同时，在自然界中，墨鱼（属棕褐色) 已经进化出一种针对垂直不均匀照明条件进行了优化的眼睛，它由一个 W 形瞳孔、一个球形晶状体和一个具有高密度光感受器排列和偏振光灵敏度的弯曲视网膜组成。在这里，受墨鱼眼的启发，我们报告了一种人工视觉系统，该系统由 W 形瞳孔、单球透镜、表面集成柔性偏振器和具有局部致密像素排列的圆柱形硅光电二极管阵列组成。集成在球透镜上的 W 形光瞳可平衡垂直方向的不均匀照明，集成柔性偏光片的圆柱形硅光电二极管阵列可实现高对比度和高敏锐度成像。