Are any commercially available compound vision sensors available? Not a simple 8 sensor system using photo-diodes but a genuine sensor that can provide a >32x32 compound matrix. Would some form of reduction in the granularity of a megapixel camera be a better option? The real purpose is to reduce processing time to a minimum, while extracting the maximum basic information.
The following people have used a compound eye for the development of their insect inspired rotor craft to demonstrate panoramic optical flow methods without the use of accelerometers.
The sensors are described here; Curvace
Paper here; Miniature curved artificial compound eyes
With a detailed description of the fabrication here; Supporting Information