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The area of the image sensor which corresponds to active pixels.
This is the region of the sensor that actually receives light from the scene. Therefore, the size of this region determines the maximum field of view and the maximum number of pixels that an image from this sensor can contain.
The rectangle is defined in terms of the full pixel array; (0,0) is the top-left of the full pixel array, and the size of the full pixel array is given by CameraCharacteristics.SensorInfoPixelArraySize.
Most other keys listing pixel coordinates have their coordinate systems based on the active array, with (0, 0) being the top-left of the active array rectangle.
The active array may be smaller than the full pixel array, since the full array may include black calibration pixels or other inactive regions.
Units: Pixel coordinates on the image sensor
Range of valid values:
This key is available on all devices.