A device includes a digital camera positioned underneath a display of the device that captures images through the display. When capturing images using the digital camera, light emitted by the display can get into the digital camera, interfering with or corrupting the captured images. Calibration images are displayed on the display and captured by the digital camera to be used to generate an enhanced output image that mitigates the interference from the display. Recalibration images are subsequently captured in response to any of a variety of different trigger events that may cause or indicate a change in the alignment and geometries of the display pixels to the imager pixels. The captured recalibration image is merged with the previously captured calibration image to generate a merged calibration image, which is afterwards used as the captured calibration image.