What are these result output windows 'pool, weak, strong, tracked, result, all ' means respectively?

[byliut]

I'm new to the image processing filed, would you please help me to answer this problem?

[Theologis]

Dear byliut,
I think:
pool is the Character candidates extraction with non-maximum suppression step.
weak is weak possibility of the bonding box to be a letter.
strong is strong possibility of the bonding box to be a letter.
tracked are the tracked letters that contains strong and maybe some weak letters.
result is the result after the OCR step.

[byliut]

Dear byliut,
I think:
pool is the Character candidates extraction with non-maximum suppression step.
weak is weak possibility of the bonding box to be a letter.
strong is strong possibility of the bonding box to be a letter.
tracked are the tracked letters that contains strong and maybe same weak letters.
result is the result after the OCR step.
that sounds right, thank you!