Opencv textdetector false positives

Hello you all, I'm a bit surprised about the Opencv text detector module results. This is what I get using the standard textdetection sample code:    As you can see **there are many false positives**. Furthermore **the algorythm runs very slow** and if you try to scale down pictures the number of false positives increases. All I would to know is if someone else have made a try with the textdetection sample code and gets same results or I'm getting something wrong.. I've run the tests with mac osx build if it matters. Thanks.