iLab Neuromorphic Robotics Toolkit  0.1
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IntegralOpsImpl.H
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1 /*! @file
2  @author John Shen
3  @copyright GNU Public License (GPL v3)
4  @section License
5  @verbatim
6  // ////////////////////////////////////////////////////////////////////////
7  // The iLab Neuromorphic Robotics Toolkit (NRT) //
8  // Copyright 2010-2012 by the University of Southern California (USC) //
9  // and the iLab at USC. //
10  // //
11  // iLab - University of Southern California //
12  // Hedco Neurociences Building, Room HNB-10 //
13  // Los Angeles, Ca 90089-2520 - USA //
14  // //
15  // See http://ilab.usc.edu for information about this project. //
16  // ////////////////////////////////////////////////////////////////////////
17  // This file is part of The iLab Neuromorphic Robotics Toolkit. //
18  // //
19  // The iLab Neuromorphic Robotics Toolkit is free software: you can //
20  // redistribute it and/or modify it under the terms of the GNU General //
21  // Public License as published by the Free Software Foundation, either //
22  // version 3 of the License, or (at your option) any later version. //
23  // //
24  // The iLab Neuromorphic Robotics Toolkit is distributed in the hope //
25  // that it will be useful, but WITHOUT ANY WARRANTY; without even the //
26  // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
27  // PURPOSE. See the GNU General Public License for more details. //
28  // //
29  // You should have received a copy of the GNU General Public License //
30  // along with The iLab Neuromorphic Robotics Toolkit. If not, see //
31  // <http://www.gnu.org/licenses/>. //
32  // ////////////////////////////////////////////////////////////////////////
33  @endverbatim */
34 
35 
36 
37 //#################################################################
38 template <typename promo = int, typename srcType, typename dstType = typename nrt::promote<srcType,promo>::type>
40 {
42  result(im.width() + 1, im.height() + 1, nrt::ImageInitPolicy::Zeros); // zero padding on the left/top edges
43 
44  // NB: rect_iterators give no speed benefit
45  for(int x = 0; x < im.width(); x++)
46  for(int y = 0; y < im.height(); y++)
47  result(x+1,y+1) = result.at(x,y+1) + result.at(x+1,y) - result.at(x,y) + im(x,y);
48 
49  return result;
50 }
51 
52 //#################################################################
53 template <typename promo = int, typename srcType, typename dstType = typename nrt::promote<srcType, promo>::type>
55 (nrt::Image<nrt::PixGray<srcType> > const im, std::function<dstType(srcType const &)> evalFxn)
56 {
58  result(im.width() + 1, im.height() + 1, nrt::ImageInitPolicy::Zeros); // zero padding on the left/top edges
59 
60  // NB: rect_iterators give no speed benefit
61  for(int x = 0; x < im.width(); x++)
62  for(int y = 0; y < im.height(); y++)
63  result(x+1,y+1) = result.at(x,y+1) + result.at(x+1,y) - result.at(x,y) + evalFxn(im(x,y).val());
64 
65  return result;
66 }
67 
68 //#################################################################
69 template <typename promo = int, typename srcType, typename dstType = typename nrt::promote<srcType,promo>::type>
71 {
72  assert(im.rectangleOk(rect));
73  return im(rect.bottomRightI()).val() - im(rect.bottomLeftI()).val() - im(rect.topRightI()).val() + im(rect.topLeft()).val();
74 }
75