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 [ maskg, maskSky]=gen_predicted_GS_efficient(Default, f, FSup) |
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40 | % GroundThreshold, SkyThreshold) |
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41 | %function [maskGvec, maskSkyvec]=gen_predicted_GS_efficient(TrainSet,HistFeaType,HistFeaDate,AbsFeaType,AbsFeaDate) |
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42 | |
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43 | % This function generated the learned Ground and Sky mask (Code by Rajiv, Modified by Min 1/27) |
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44 | % Input -- |
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45 | % f : (55x305=16775)by 104 |
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46 | % FSup: 13 by No. of Sup |
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47 | % |
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48 | %if nargin < 4 |
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49 | % GroundThreshold = 0.5; |
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50 | % SkyThreshold = 0.5; |
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51 | %elseif nargin < 5 |
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52 | % SkyThreshold = 0.5; |
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53 | %end |
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54 | |
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55 | NuRow = Default.NuRow_default; |
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56 | batchRow = [1:Default.WeiBatchSize:NuRow NuRow+1]; |
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57 | |
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58 | %================== |
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59 | maskGvec=[]; |
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60 | maskSkyvec=[]; |
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61 | |
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62 | for WeiBatchNumber = 1:floor(NuRow/Default.WeiBatchSize) |
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63 | |
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64 | count=1; |
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65 | % for i = batchRow(WeiBatchNumber):min(batchRow(WeiBatchNumber)+Default.WeiBatchSize-1,NuRow) |
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66 | for i = batchRow(WeiBatchNumber):batchRow(WeiBatchNumber+1)-1 |
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67 | |
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68 | % constructing features for each batch of rows from batch featuresa |
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69 | RowskyBottom = ceil(NuRow/2); |
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70 | PatchSkyBottom = ceil(Default.VertYNuDepth*(1-Default.Horizon)); |
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71 | if i <= RowskyBottom |
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72 | PatchRowRatio = PatchSkyBottom/RowskyBottom; |
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73 | RowTop = ceil((i-1)*PatchRowRatio+1); |
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74 | RowBottom = ceil(i*PatchRowRatio); |
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75 | else |
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76 | PatchRowRatio = (Default.VertYNuDepth-PatchSkyBottom)/(NuRow-RowskyBottom); |
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77 | RowTop = ceil((i-RowskyBottom-1)*PatchRowRatio+1)+PatchSkyBottom; |
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78 | RowBottom = ceil((i-RowskyBottom)*PatchRowRatio)+PatchSkyBottom; |
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79 | end |
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80 | ColumnLeft = 1; |
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81 | ColumnRight = Default.HoriXNuDepth; |
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82 | |
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83 | FeaVector = genFeaVectorNew( Default, f, FSup,... |
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84 | [RowTop:RowBottom],[ColumnLeft:ColumnRight], 1, 0); %Notice LearnNear is 0; |
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85 | % load the GroundSkyPara for each WeiBatchNumber |
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86 | load([Default.ParaFolder '/GrndSkyTheta_Train400_WeiBatNu' num2str(WeiBatchNumber) '.mat']); |
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87 | |
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88 | ab=thetaG{count}'; |
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89 | cd=thetaS{count}'; |
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90 | maskGvec=[maskGvec; ab*[ones(1,305); FeaVector]]; |
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91 | maskSkyvec=[maskSkyvec; cd*[ones(1,305); FeaVector]]; |
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92 | count=count+1; |
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93 | end |
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94 | end |
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95 | maskgD=maskGvec; |
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96 | maskSkyD=maskSkyvec; |
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97 | maskg=(1./(1+exp(-maskGvec)))>Default.GroundThreshold; |
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98 | maskSky=(1./(1+exp(-maskSkyvec)))>Default.SkyThreshold; |
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99 | return; |
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100 | |
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101 | |
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