Programming Manual
PHYTEC Messtechnik GmbH 2008 L-720e_0
115
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field-based digitizing
with zoom
An image of the size 120 x 100
should be produced, for which the original image is magnified
with the factor 2 in X- and Y-direction.
(a) Resolution / Scaling
It is sufficient to digitize a field. Without magnification 360 x 288
pixels are used. In order to allow the expansion we set 180 x 144
pixels :
ppl
=180,
lines
=144. The width/height ratio is maintained.
(b) Size of the Section
Corresponding to the size of the window we set:
hsize
= 120,
vsize
= 100.
(c) Positioning
With the parameter
hpos
and
vpos
the window section can be
shifted 180 - 120 = 60 pixels in X-direction and 144 - 100 = 44
pixels in Y-direction.
•
Full Frame Digitization
A 700 x 500 image should be delivered
with resolution and proportions that correspond to a TV image.
(a) Resolution and Scaling
For digitization, a frame is required. Since a full TV image serves
as the foundation the image resolution results in
ppl
=720 and
lines
=576. The lines value in the vertical direction must be evenly
distributed to both half frames.
nOlines
=
nElines
= ½ lines
nOlines
= ½ 576 = 288
nElines
= ½ 576 = 288
