Artificial Eyes by B. Sheen

Alfred Sheen

Microoptical Artificial Compound Eyes

Natural compound eyes combine small eye volumes with a large field of view at the cost of comparatively low spatial resolution. For small invertebrates such as flies or moths, compound eyes are the perfectly adapted solution to obtaining sufficient visual information about their environment without overloading their brains with the necessary image processing. However, to date little effort has ...

Galaxy Classification by Human Eyes and by Artificial Neural Networks

The rapid increase in data on galaxy images at low and high redshift calls for re-examination of the classification schemes and for new automatic objective methods. Here we present a classification method by Artificial Neural Networks. We also show results from a comparative study we carried out using a new sample of 830 APM digitised galaxy images. These galaxy images were classified by 6 expe...

Shape from Sheen

Introduction Glossy surfaces are everywhere. If you stand in a typical bathroom and look around, you'll see that most of the surfaces surrounding you are lustrous or glossy. Glazed tiles, gleaming faucets, polished basins and plastic shampoo bottles are all peppered with specular highlights. Given that highlights are so common it seems plausible that the visual system might somehow be able to m...

Miniature curved artificial compound eyes.

In most animal species, vision is mediated by compound eyes, which offer lower resolution than vertebrate single-lens eyes, but significantly larger fields of view with negligible distortion and spherical aberration, as well as high temporal resolution in a tiny package. Compound eyes are ideally suited for fast panoramic motion perception. Engineering a miniature artificial compound eye is cha...