Figure 33: Rendering of measured landmarks (hole corners) against pre-restoration photo, matched via mathematical camera model. Computation based on coordinate system sketched in blue and positioned at Z4 corner. Rendered landmarks, marked by red squares, correspond to measurements of air vents and Zyklon holes taken in roof's current condition. Match between photo and rendering proves Zyklon holes were indeed reopened at original locations. Z5 located outside photograph, consistent with its rendering (red square to left of photo).
© Holocaust and Genocide Studies, Oxford University Press, Volume 18, Number 1, Spring 2004, pages 68-103. Used with permission.