slow running time

[jiang0131]

It runs very slow on my laptop. I use a 640x480 webcam.

""
640x480 webcam
Ubuntu 10.10
OpenCV 2.3
2.4 GHz Dual Core
4G RAM
""

I use the default parameter in the YAML file.
Here is the output from the console:

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Created 614610 bounding boxes
Found 10 good boxes, 613623 bad boxes
Best Box: 417 225 80 82
Bounding box hull: 409 211 98 108
var: 1080.19
Positive fern examples generated: 200
negative data generation started.
Negative examples generated: 7357
Fern detector made 19 detections in 7749.08ms
Found 5 NN matches
Tracking...
Cluster indexes: 0
Found 5 clusters
No confident cluster was found
Low variance..not training
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

Is there any parameter I should tune to make it faster?

[alantrrs]

Besides the fact that I haven't optimized the code. Right now the algorithm test every single bounding box created in the grid. To make it faster it should just take a sample of it, however I haven't implemented that feature yet.

[zttkkk]

alantrrs is right,the code is not optimized,and the algorithm is not good enough, I found that the length of grid[] is very sensitive to the image size.In 320_240,the length is about 64000,and in your test the length grows up to about 610000 while the image size is 640_480.You see? The image size just grows 4 times,then the length of grid[] grows 10 times.