1. A camera system, comprising: an image sensor chip configured to produce image data representative of light incident upon the image sensor chip; an image signal processor chip (“ISP”) configured to process the image data, the ISP comprising: an input configured to receive the image data from the image sensor chip; a decimator configured to decimate the received image data into a plurality of image sub-band components; a motion detection engine configured to generate a motion map based on a first subset of the plurality of image sub-band components; a motion estimation engine configured to generate a set of motion vectors based on the generated motion map and a second subset of the plurality of image sub-band components; and an output configured to output one or more of the received image data and the set of motion vectors.