1 | % * This code was used in the following articles:
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2 | % * [1] Learning 3-D Scene Structure from a Single Still Image,
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3 | % * Ashutosh Saxena, Min Sun, Andrew Y. Ng,
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4 | % * In ICCV workshop on 3D Representation for Recognition (3dRR-07), 2007.
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5 | % * (best paper)
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6 | % * [2] 3-D Reconstruction from Sparse Views using Monocular Vision,
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7 | % * Ashutosh Saxena, Min Sun, Andrew Y. Ng,
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8 | % * In ICCV workshop on Virtual Representations and Modeling
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9 | % * of Large-scale environments (VRML), 2007.
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10 | % * [3] 3-D Depth Reconstruction from a Single Still Image,
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11 | % * Ashutosh Saxena, Sung H. Chung, Andrew Y. Ng.
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12 | % * International Journal of Computer Vision (IJCV), Aug 2007.
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13 | % * [6] Learning Depth from Single Monocular Images,
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14 | % * Ashutosh Saxena, Sung H. Chung, Andrew Y. Ng.
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15 | % * In Neural Information Processing Systems (NIPS) 18, 2005.
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16 | % *
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17 | % * These articles are available at:
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18 | % * http://make3d.stanford.edu/publications
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19 | % *
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20 | % * We request that you cite the papers [1], [3] and [6] in any of
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21 | % * your reports that uses this code.
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22 | % * Further, if you use the code in image3dstiching/ (multiple image version),
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23 | % * then please cite [2].
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24 | % *
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25 | % * If you use the code in third_party/, then PLEASE CITE and follow the
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26 | % * LICENSE OF THE CORRESPONDING THIRD PARTY CODE.
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27 | % *
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28 | % * Finally, this code is for non-commercial use only. For further
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29 | % * information and to obtain a copy of the license, see
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30 | % *
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31 | % * http://make3d.stanford.edu/publications/code
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32 | % *
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33 | % * Also, the software distributed under the License is distributed on an
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34 | % * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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35 | % * express or implied. See the License for the specific language governing
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36 | % * permissions and limitations under the License.
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37 | % *
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38 | % */
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39 | function [seglist ]=edgeSegDetection(Img,k,EdgeReady) |
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40 | |
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41 | displayFlag = false; |
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42 | |
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43 | % define global variable |
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44 | global GeneralDataFolder ScratchDataFolder LocalFolder ClusterExecutionDirectory... |
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45 | ImgFolder VertYNuPatch VertYNuDepth HoriXNuPatch HoriXNuDepth a_default b_default Ox_default Oy_default... |
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46 | Horizon_default filename batchSize NuRow_default SegVertYSize SegHoriXSize WeiBatchSize; |
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47 | |
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48 | %if nargin < 1 |
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49 | %Img = imread('/afs/cs.stanford.edu/group/reconstruction3d/Data/TestImg/img-combined1-p-108t0.jpg'); |
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50 | % Img = imread('/afs/cs/group/reconstruction3d/Data/moreInternetImages/4.jpg'); |
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51 | %end |
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52 | |
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53 | % Img = imresize(Img, 0.5, 'nearest'); |
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54 | |
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55 | % this function detect the edge segment |
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56 | % output the start position and end position of each line segment |
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57 | [x y dummy] = size(Img); |
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58 | |
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59 | if ~ EdgeReady |
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60 | ImgYCbCr = rgb2ycbcr(Img); |
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61 | %method = {'sobel','Prewitt','Roberts','zerocross','Canny','log'}; |
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62 | method = {'log'}; % for plane Parameter MRF |
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63 | % method = {'sobel'}; |
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64 | NuMethod = size(method,2); |
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65 | edgeImgTotal = zeros(x, y); |
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66 | for i = 1: NuMethod |
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67 | [edgeImg, thresh] = edge(ImgYCbCr(:,:,1),method{i},[ ], 4); |
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68 | % [edgeImg, thresh] = edge(ImgYCbCr(:,:,1),method{i},[ ], 'both'); |
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69 | edgeImg = edge(ImgYCbCr(:,:,1),method{i},thresh/4, 4); |
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70 | % edgeImg = edge(ImgYCbCr(:,:,1),method{i},thresh/4, 'both'); |
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71 | edgeImgTotal = edgeImgTotal | edgeImg; |
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72 | end |
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73 | else |
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74 | edgeImgTotal = Img; |
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75 | end |
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76 | % |
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77 | [edgelineList edgeline] = edgelink(edgeImgTotal,10); % hardwork |
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78 | % [edgelineList edgeline] = edgelink(edgeImgTotal,5); % hardwork |
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79 | tol = 3; |
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80 | angtol=0.01; % .01 for plane Parameter MRF |
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81 | linkrad = 3; |
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82 | %minLineLength = 45; |
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83 | minLineLength = 20; |
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84 | [seglist, nedgeIm] = lineseg(edgelineList,tol,angtol,linkrad, minLineLength); % hardwork |
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85 | |
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86 | if displayFlag, |
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87 | figure(100), image(Img); |
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88 | hold on; drawseg(seglist,100,2); |
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89 | %saveas(100,[ScratchDataFolder '/LineSeg/' filename{k} '_lineSeg.jpg']); |
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90 | end |
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