I think pixel shifting refers to taking multiple exposures and moving the sensor, then combining the exposures for a higher resolution/more accurate color result.
en.wikipedia.org
That's certainly not what's happening here.
The image hitting the sensor is already blurred by diffraction as the Airy disk is 4 times the size of the sensor elements. There may also be an Anti-Aliasing filter. So they must be doing some sharpening and also noise reduction. Other than that, I have no knowledge of their actual algorithm for demosaicing.
My examples were intended to show what the sensor sees in each mode compared to a real 48 Mp Bayer sensor and some simple methods of trying to reconstruct the original image from that data.
Here is another example showing a 12 Mp Bayer (enlarged) compared to a 48 Mp Quad Bayer compared to a real 48 Mp Bayer. It is obvious that the 48 Mp Quad Bayer resolves more than the enlarged 12 Mp Bayer but falls short of a real 48 Mp Bayer.which is consistent with what I see in the samples from the Air 2.
Pixel shift - Wikipedia
The image hitting the sensor is already blurred by diffraction as the Airy disk is 4 times the size of the sensor elements. There may also be an Anti-Aliasing filter. So they must be doing some sharpening and also noise reduction. Other than that, I have no knowledge of their actual algorithm for demosaicing.
My examples were intended to show what the sensor sees in each mode compared to a real 48 Mp Bayer sensor and some simple methods of trying to reconstruct the original image from that data.
Here is another example showing a 12 Mp Bayer (enlarged) compared to a 48 Mp Quad Bayer compared to a real 48 Mp Bayer. It is obvious that the 48 Mp Quad Bayer resolves more than the enlarged 12 Mp Bayer but falls short of a real 48 Mp Bayer.which is consistent with what I see in the samples from the Air 2.
