drawopticalflow.cpp
2.37 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright 2012 The MITRE Corporation *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <openbr/plugins/openbr_internal.h>
#include <openbr/core/opencvutils.h>
#include <opencv2/imgproc.hpp>
using namespace cv;
namespace br
{
/*!
* \ingroup transforms
* \brief Draw a line representing the direction and magnitude of optical flow at the specified points.
* \author Austin Blanton \cite imaus10
*/
class DrawOpticalFlow : public UntrainableTransform
{
Q_OBJECT
Q_PROPERTY(QString original READ get_original WRITE set_original RESET reset_original STORED false)
BR_PROPERTY(QString, original, "original")
void project(const Template &src, Template &dst) const
{
const Scalar color(0,255,0);
Mat flow = src.m();
dst = src;
if (!dst.file.contains(original)) qFatal("The original img must be saved in the metadata with SaveMat.");
dst.m() = dst.file.get<Mat>(original);
dst.file.remove(original);
foreach (const Point2f &pt, OpenCVUtils::toPoints(dst.file.points())) {
Point2f dxy = flow.at<Point2f>(pt.y, pt.x);
Point2f newPt(pt.x+dxy.x, pt.y+dxy.y);
line(dst.m(), pt, newPt, color);
}
}
};
BR_REGISTER(Transform, DrawOpticalFlow)
} // namespace br
#include "gui/drawopticalflow.moc"