Image and Bounding Box Means for PASCAL Visual Object Classes Challenge 2006: Dataset trainval


Generated by Tomasz Malisiewicz on Sat Feb 25 2006
A summary of The PASCAL Visual Object Classes Challenge 2006


What did I do?

For each image that contains a particular object, I averaged the images by resizing each image to 400 x 400, summing in RGB space (default in MATLAB), dividing by the number of images, then resizing to the mean size of the images containing that object.

I repeated that procedure for the bounding boxes that enclose those objects. I simply resized the bounding box of each object (per pose) to 100 x 100, summed, divided by the number of bounding boxes for that object and that particular pose, then resized to the mean bounding box size.

What are these images of?

The first column is the average of the entire image. Note that on the average, images containing cows are larger than images containing dogs. The second column averages all of the bounding boxes, while the remaining columns are averages of the bounding boxes per pose. The final column averages the 'unspecified' pose bounding boxes. Note how frontal bounding boxes of cars are significantly smaller than Right or Left bounding boxes of cars (there are also less of them). This is probably because it is harder to take an image of a car's front compared to its side.

Also, one can view the summary montage of the above images (each image is 100 x 100).


Next to each image is a number which denotes the number of images averaged.
Image Containing Object[Bounding Box for All Poses][Frontal BB][Rear BB][Left BB][Right BB][Unspecified BB]
bicycle276trainval_mean_bicycle_view_ALL_num_323.png323 trainval_mean_bicycle_view_Frontal_num_11.png11 trainval_mean_bicycle_view_Rear_num_6.png6 trainval_mean_bicycle_view_Left_num_111.png111 trainval_mean_bicycle_view_Right_num_58.png58 trainval_mean_bicycle_view__num_137.png137
bus177trainval_mean_bus_view_ALL_num_235.png235 trainval_mean_bus_view_Frontal_num_16.png16 trainval_mean_bus_view_Rear_num_13.png13 trainval_mean_bus_view_Left_num_15.png15 trainval_mean_bus_view_Right_num_12.png12 trainval_mean_bus_view__num_179.png179
car576trainval_mean_car_view_ALL_num_854.png854 trainval_mean_car_view_Frontal_num_59.png59 trainval_mean_car_view_Rear_num_149.png149 trainval_mean_car_view_Left_num_144.png144 trainval_mean_car_view_Right_num_117.png117 trainval_mean_car_view__num_385.png385
cat387trainval_mean_cat_view_ALL_num_429.png429 trainval_mean_cat_view_Frontal_num_43.png43 trainval_mean_cat_view_Rear_num_1.png1 trainval_mean_cat_view_Left_num_16.png16 trainval_mean_cat_view_Right_num_15.png15 trainval_mean_cat_view__num_354.png354
cow207trainval_mean_cow_view_ALL_num_313.png313 trainval_mean_cow_view_Frontal_num_23.png23 trainval_mean_cow_view_Rear_num_4.png4 trainval_mean_cow_view_Left_num_76.png76 trainval_mean_cow_view_Right_num_62.png62 trainval_mean_cow_view__num_148.png148
dog369trainval_mean_dog_view_ALL_num_422.png422 trainval_mean_dog_view_Frontal_num_44.png44 trainval_mean_dog_view_Rear_num_6.png6 trainval_mean_dog_view_Left_num_36.png36 trainval_mean_dog_view_Right_num_31.png31 trainval_mean_dog_view__num_305.png305
horse248trainval_mean_horse_view_ALL_num_326.png326 trainval_mean_horse_view_Frontal_num_38.png38 trainval_mean_horse_view_Rear_num_8.png8 trainval_mean_horse_view_Left_num_63.png63 trainval_mean_horse_view_Right_num_52.png52 trainval_mean_horse_view__num_165.png165
motorbike239trainval_mean_motorbike_view_ALL_num_275.png275 trainval_mean_motorbike_view_Frontal_num_16.png16 trainval_mean_motorbike_view_Rear_num_5.png5 trainval_mean_motorbike_view_Left_num_32.png32 trainval_mean_motorbike_view_Right_num_54.png54 trainval_mean_motorbike_view__num_168.png168
person733trainval_mean_person_view_ALL_num_1156.png1156 trainval_mean_person_view_Frontal_num_261.png261 trainval_mean_person_view_Rear_num_91.png91 trainval_mean_person_view_Left_num_88.png88 trainval_mean_person_view_Right_num_78.png78 trainval_mean_person_view__num_638.png638
sheep251trainval_mean_sheep_view_ALL_num_421.png421 trainval_mean_sheep_view_Frontal_num_29.png29 trainval_mean_sheep_view_Rear_num_8.png8 trainval_mean_sheep_view_Left_num_98.png98 trainval_mean_sheep_view_Right_num_91.png91 trainval_mean_sheep_view__num_195.png195

Also, one can view the summary montage of the above images (each image is 100 x 100).

Generated by Tomasz Malisiewicz