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Thread Subject:
help

Subject: help

From: intan

Date: 22 Nov, 2010 14:49:05

Message: 1 of 5

i m new to matlab. anybody can tell me how i can determine the true positive ratio for background subtraction?

Subject: help

From: ImageAnalyst

Date: 22 Nov, 2010 17:25:25

Message: 2 of 5

On Nov 22, 9:49 am, "intan " <intan_...@hotmail.com> wrote:
> i m new to matlab. anybody can tell me how i can determine the true positive ratio for background subtraction?

------------------------------------------------------------
Not me. Nor anyone else in this newsgroup, or anyone else who hasn't
seen your algorithm, results, or ground truth. Lacking that, here's
the best guess I can give you:

truePositiveRatio = rand(1,1);

Subject: help

From: Sean de

Date: 22 Nov, 2010 18:34:05

Message: 3 of 5

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <e0a7e14a-5523-430e-
> ------------------------------------------------------------
> Not me. Nor anyone else in this newsgroup, or anyone else who hasn't
> seen your algorithm, results, or ground truth. Lacking that, here's
> the best guess I can give you:
>
> truePositiveRatio = rand(1,1);

really?

I thought it was this:
truePositiveRatio = floor(rand+sqrt(1800-36));

Subject: help

From: intan

Date: 27 Nov, 2010 15:24:03

Message: 4 of 5

then hw to produce the ground truth??? really no idea

Subject: help

From: ImageAnalyst

Date: 27 Nov, 2010 16:20:22

Message: 5 of 5

On Nov 27, 10:24 am, "intan " <intan_...@hotmail.com> wrote:
> then hw to produce the ground truth??? really no idea

---------
Well if *you* don't know what defines the "true" answers for your
data, then no one does. I have no idea whatsoever what "true" means
to you in the context that you used it in your first post. I thought
you knew. Nor do I know what two quantities that you're ratioing.
Are those things that you thought we should know when you yourself
don't even know what they are?

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