[Digikam-devel] Updated GSoC Proposal
kare.sars at iki.fi
Tue Mar 23 10:20:29 GMT 2010
On Tuesday 23 March 2010, Aditya Bhatt wrote:
> @Alex : This is my GSoC proposal for this project. What do you say?
> @Marcel : Many thanks for the feedback. I've updated my proposal and made
> it more specific.
> Mention on what test data this is based?
> We've been testing our own pictures with frontal faces, and the detection
> is good. More cascades used in tandem == better detection accuracy. For
> profile and side faces, it is a trivial matter of applying more cascades.
> This increases the accuracy, but decreases the speed, I'll be working on
> that. It involves a tradeoff between image size and good detection. I can
> decrease image size to dramatically increase detection speed, but accuracy
> goes down. I can think of a lot of solutions for this, they will come in
> the subsequent commits.
Just a comment about the image size tradeoff.
I have just updated the automatic image selection on previews in Skanlite
(actually libksane). What I did was to first do a rough auto selection on a
resized image ~100 * 150 pixels and then refine the selections on the full-
sized preview. It improved the speed dramatically and did not decrease the
accuracy. (actually it removed a lot of false positives)
Just an idea if you needed more :)
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