how to store bag of words vocabulary efficiently?

asked 2014-12-01 03:09:34 -0600

noobproof
36 ●2

Hello All,

I am training my system against Partially Annotated Databases The Caltech Database given here http://pascallin.ecs.soton.ac.uk/challenges/VOC/databases.html.

I am using "bag of words" algorithm for vocabulary building and detection. My YML file is huge. So everytime I pass an image for detection the ~65MB yml file is loaded and then the object is detected. How can I do it more efficiently ?? Or is there some other way to store the vocabulary ??

I am badly stuck at it please help!!

Thanks in advance. Aditi K

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your link does not work for me...

thdrksdfthmn ( 2014-12-01 05:59:29 -0600 )edit

Please check this link http://pascallin.ecs.soton.ac.uk/challenges/VOC/

noobproof ( 2014-12-01 23:37:18 -0600 )edit

this one works. Anyway, I knew what was it about, I have also used it

thdrksdfthmn ( 2014-12-02 02:08:03 -0600 )edit

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answered 2014-12-01 06:20:06 -0600

thdrksdfthmn
2170 ●5 ●18 ●46

I would proceed like this:

When starting the application, do an initialization where you are loading the needed files (like the vocabulary and classifier files). This should be done only once at the beginning. Then, for every image you want to process, you'll have the data you'll need. For example, this can be done in the constructor of the class (or in a global variable, if you are not using OOP, which is not so good).
I think using .xml will be smaller than the .yaml/.yml. I have done some tests (in the same idea: saving vocabulary of BOW) and in my cases it was always smaller.

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