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Free data  
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Category Views
Number of image
Free
Total
Airplane (3 views) Airplane_Frontal_Side_View
10
224
Airplane_Rear_Side_View
10
172
Airplane_Side_View
10
112
Bicycle (1 view) Bicycle
9
208
Bus (2 views) Bus_Frontal_Side_View
10
120
Bus_Side_View
10
120
Car (5 views) Car_Frontal_Side_View
10
700
Car_Frontal_View
10
592
Car_Rear_Side_View
10
120
Car_Rear_View
10
180
Car_Side_View
10
208
Motorcycle (1 view) Motorcycle
10
432
Tractor (2 views) Tractor_Frontal_Side_View
10
78
Tractor_Side_View
10
112
Truck (3 views) Truck_Frontal_side_view
10
112
Truck_Rear_side_view
10
168
Truck_Side_view
10
100
Sailboat (2 views) Sailboat_Double_sail
10
182
Sailboat_Single_sail
10
260
Helicopter (2 views) Helicopter_Frontal_side_view
10
176
Helicopter_Side_view
10
182
Matlab codes to load this category (see MatlabToolbox page for more information):
clear; close all;
HOMEIMAGES = 'C:\Yourdatabase\LHI_Transportation_9\Images'; % set your default folder
HOMEANNOTATIONS = 'C:\Yourdatabase\LHI_Transportation_9\Annotations';
HOMELABELMAPS = 'C:\Yourdatabase\LHI_Transportation_9\LabelMaps';
Show multiple views:
Select category "car" for example, display first image of all folders (will display objects of different views)
db_car=LHIquery(D,'folder','car'); %get all cars
db_views=LHIquery(db_car,'filename','0000000001'); % get first image of all views
LHIdbshowscenes(db_views,HOMEIMAGES,HOMELABELMAPS,1,[3 5]); %display images

Display hierarchical decomposition of one image
LHIdbshowimage(db_car, 5, HOMEIMAGES);%display one image with all hierarchies
Show names in this category:
LHIobjectnames(D); % show all names inside database 'D'
Show statistics:
[a,b,c,d,e]=LHIobjectstats(D,HOMEIMAGES,HOMELABELMAPS); %Show statistics
1. position distribution of each category

2. Boundary keypoints count histogram

3. Object area count histogram
Related publications:
Liang Lin, Shaowu Peng, Jake Porway, and Song-Chun Zhu, An Empirical Study of Object Category Recognition: Sequential Testing and Generalized Samples, Proc. Int'l Conference on Computer Vision (ICCV), 2007
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