No they are not multiple slices of Image Sensor, but they have stacked the image sensing part over the circuit part, meaning they have differentiated the electronic circuit part and the image sensing part on the semiconductor subtract. This way they are being able to have better control over the image sensing.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.