1. A method comprising: receiving image data acquired by an image sensor; processing the image data in the image sensor by: correcting one or more defective pixels in the image data based on a one-dimensional defective pixel correction algorithm; horizontally demosaicing the image data based on a one-dimensional horizontal demosaic algorithm; or a combination thereof; horizontally downscaling the processed image data in the image sensor; and vertically downscaling the horizontally downscaled image data in an image signal processor to be displayed for viewing on a display device.