4. RESULTS 5. DISCUSS
The following illustrations show the grid, the rendered
surface and a left right comparison of some longi-
tudinal sections of the lateral view of a measured
As well as the right-left comparison a prae-post-
Application:
operative comparison is possible, shown in fig.
niques refer
7a,b,c. In this case, only minimal changes are visible, presented.
plaster cast (fig. 6a,b,c). The number of points to functional aspects more than cosmetical aspects This technc
calculate the meshes is 1.5 times as high as the were the general reason for the surgical intervention. documentat
orginal number of measured image points. The The problem area in these cases is the mouth, the short time
interpolation method is a cubic B-spline. The point of representation of the lips is not satisfying, as conditioned
view is the same as in the X-rays and well-known to mentioned above a possible reason may be the By synchro
the physician. It allows judgement of the profile and inaccuracy of the manufacturing process of the possible to
thereby the dimensions of the malformation. plaster casts. instance ba
Comparisons of right-left-symmetry in any section Advantages
quantify conspicious areas and allow more specific measuremel
analyses. the non-inv
little phys
photogramr
NNI extensive ir
EL value image
format scr
material car
E The present
ERES Ds anatomical
= =~ facilitate
E ZZ - the quant
= - the docur
== = 4 - the cons
= ZZ
Nds ZZ BS implantati
= For the pla
useful to lc
view. The a
fig.6a: meshes fig.6b: rendering fig.7a: praeop fig.7b: postop a threedir
momentary
result.
Apart fror
screenings
Loe : ; the shape.
comparison of profiles medion line can be quai
praeoperotlve postoperotlve
lower Face flew "t Eon Se >
F2 = 5086 mm F2 = 4743 mm gatic
M Le assessmen
3682 on [38e m comparisor
As a resul
3546 mn | 3978 mn lopment of
future. In ci
it should be
S93 nm BOSo m after skelet
fessum fum) Another go
ee 2071 m MES C dentoalveo
3716 mm 36.25 mm The resear
3976 mm & 37.44 mm examinatior
be support
Photogram
fig.6c: longitudinal sections fig.7c: prae-post comparison gnoses an
advantage:
for the corr
software a
192
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996