Smart sensor-cover apparatus and methods and computer products for implementing same

A smart sensor-cover apparatus, for covering a sensor, comprising:

• a first controllable layer configured to, in response to a first predetermined input, selectively filter out or allow through select wavelengths of infrared and/or visible light incident on the first layer;
• a second controllable layer configured to, in response to a second predetermined input, selectively polarize or allow through light incident on the second controllable layer;
• a third controllable layer configured to, in response to a third predetermined input, change between an opaque state to partially or fully conceal the smart-sensor-cover apparatus and so the sensor from view, and a transparent state in which light can pass freely through the third controllable layer and on to the sensor;
• and
• a fourth protecting layer, being an outermost layer of the smart sensor-cover apparatus, the fourth protecting layer having at least one characteristic selected from a group of characteristics consisting of:
• being configured to self-mend when scratched;
• being configured to, in response to a fourth predetermined input, heat up to melt any ice or snow contacting the fourth protecting layer, in which case the fourth protecting layer is a fourth controllable layer;
• and
• having a hydrophobic or hydrophilic outer surface.