My guess is to create better sub pixel information when stitching the image together. https://en.m.wikipedia.org/wiki/Sub-pixel_resolution https://en.m.wikipe

My guess is to create better sub pixel information when stitching the image together. https://en.m.wikipedia.org/wiki/Sub-pixel_resolution https://en.m.wikipedia.org/wiki/Sub-pixel_resolution If all the sensor pixel data was aligned it could create bias between the edge of the pixel and the center. Edit: another thought is triangulation for determining depth