The HISAR Dispatch

Field notes from the imagery frontier.

Methodology, engineering and case notes on locating images, reading change from orbit, and turning pixels into intelligence you can defend.

Coordinates are rarely in the file. Here is how a location is rebuilt from what the frame itself contains: terrain, sky, shadows and the street.

A shadow is a clock and a calendar. Once you know where a photo was taken, its shadows narrow down the hour, and often the day.

Snow, shadows and crops all read as change to a naive model. The real work is separating a new building from a new season.