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Kerautret Bertrand
2019 FBSD
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4bd8c25a
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4bd8c25a
authored
6 years ago
by
Kerautret Bertrand
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relecture section 3 pas fini
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...
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@@ -72,7 +72,7 @@ from the scan strip (\RefFig{fig:escape} a).
A second search is then run using another directional scan aligned
on the detected segment (
\RefFig
{
fig:escape
}
b).
However, even in case of a correct detection, the estimated orientation
of the segment is subject to the numerization rounding,
of the segment is subject to the numerization rounding
or outliers
,
and the longer the real segment to detect, the higher the probability to
fail again on a blurred segment escape from the directional scan.
...
...
@@ -116,7 +116,7 @@ thus producing a useless computational cost.
Here the proposed solution is to dynamically align the scan direction on
the blurred segment one all along the expansion stage.
At each iteration
$
i
$
, the scan strip is aligned on the direction of the
At each iteration
$
i
$
of the expansion
, the scan strip is aligned on the direction of the
blurred segment
$
\mathcal
{
B
}_{
i
-
1
}$
computed at previous iteration
$
i
-
1
$
.
More generally, an adaptive directional scan
$
ADS
$
is defined by:
\begin{equation}
...
...
@@ -276,7 +276,7 @@ Another option, called {\it multi-detection} (Algorithm 1), allows the
detection of all the segments crossed by the input stroke
$
AB
$
.
In order to avoid multiple detections of the same edge, an occupancy mask,
initially empty, collects the dilated points of all the blurred segments,
so that these points can not be add to another segment.
so that these points can not be add
ed
to another segment.
First the positions
$
M
_
j
$
of the prominent local maxima of the gradient
magnitude found under the stroke are sorted from the highest to the lowest.
...
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