Cruz, Santiago 
  
also been implemented, so a full inner orientation process is possible. Because an image file is saved with four marks in 
the computed corner positions, inner orientation with conventional digital plotters is allowed since these equipments 
need fiducial marks for the inner orientation. 
Some cautions have to be taken in order to obtain appropriate photographs for inner orientation. Good and uniform 
illumination conditions are necessary since frame edges have to be clearly visible and contrasted enough. Also it is 
better to avoid some situations such as making pictures with large linear features very close and near parallel to the 
edges, otherwise the computation of regression lines can be more influenced by the linear features than by the edges. 
ACKNOWLEDGEMENTS 
The research groups Ingenieria Cartogräfica and Recursos Hidricos (TEP-164 and RNM-0126, respectively; Junta de 
Andalucia, Regional Government) and Project HID98-0983 (DGICYT, Spanish Government) have partly supported this 
research. Facilities for using I.D.L. have been supported by Estudios Atlas S.L. 
REFERENCES 
Abdel Aziz, Y., Karara, H.M., 1971. Direct Linear Transformation from Comparator Coordinates into Object Space 
Coordinates in Close-Range Photogrammetry. Proc. ASP/UI Symp. Close-Range Photogrammetry, Illinois: 1-18. 
Baltsavias, E.P. and Waegli, B, 1996. Quality Analysis and Calibration of DTP Scanners. OEEPE Workshop on the 
Application of Digital Photogrammetric Workstations, Laussanne, Switzerland. 
Carvajal, F., 1999. Estudio de la influencia del microrrelieve del suelo sobre el flujo de escorrentía superficial mediante 
fotogrametría digital. Ph.D. Thesis University of Córdoba, Spain. 215 p. 
Donnelly, B.E., 1988. Film flatness in 35 mm cameras. M. Surv. Thesis, The University of Newcastle, New South 
Wales, Australia. 116 p. 
Elfick, M.H., 1986. MPS-2 a new analytical photogrammetric system for small format photogrammetry. IAPRS, 26, 8. 
Faig, W., Wilson, F.R., Shih, T.Y., 1992. Photogrammetry: a practical tool for car collision investigation. CISM Journal 
AGSGC, Vol, No.1, 31-40. 
Fryer, J.G., 1992. Recent developments in camera calibration for close-range applications. IAPRS, Vol. XXIX, part B5, 
pp. 594-599, 
Ghosh, S., 1987. Analytical Photogrammetry. Pergamon Press, NY, USA. 308 p. 
Huber, P.J., 1981. Robust Statistics. John Wiley & Sons, NY, USA. 308 p. 
Karara, H.M. (Ed.), 1989. Non-Topographic Photogrammetry 25. ASPRS, Falls Church, Virginia, USA. 445 p. 
Robson, S., 1992. Film deformation in non metric cameras under weak geometric conditions — An uncorrected disaster? 
IAPRS, Vol. XXIX, part B5, pp. 561-567. 
Warner, W.S., Andersen, O., 1992. Consequences of enlarging small-format imagery with a color copier. PERS, vol. 
58, No. 3, pp. 353-355. 
Warner, W.S., Graham, R.W., Read, R.E., 1996. Small format aerial photography. A.S.P.R.S. Maryland, USA. 348 p. 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 
  
RE 
KEY 
ABS 
The § 
this [ 
most 
const 
Seco 
Char 
inclu 
of M 
mont 
pape 
Curi 
meth 
with 
mon 
diffe 
is as 
diffe 
orier 
betw 
The 
resp 
amo 
con: 
mor 
betv 
regi 
redi 
con: 
Or O 
Sev 
rest 
hist 
app 
Pro 
dev 
be 
use