question about addPairwiseGaussian and addPairwiseBilateral

[qdinfish]

Hi,

I didn't understand what are the means of sxy=3 , sxy=80 and srgb=13?

Could you help it ?

Thanks

d.addPairwiseGaussian(sxy=3, compat=3)
d.addPairwiseBilateral(sxy=80, srgb=13, rgbim=im, compat=10)

[howardgriffin]

I have the same question .Do you understand now?

[Toz3wm]

From the original paper "Efficient Inference in Fully Connected CRFs with Gaussian Edge Potentials", this formula :

I think sxy in addPairWiseGaussian is theta_c, and sxy and srgb are respectively theta_a and theta_b. I might be wrong, however if this is not the case, then I don't see a hyper parameter that could fit to this sxy.

[dingfg]

sxy(PosXStd and PosYStd)
sxy(Bi_X_Std and Bi_Y_Std), srgb(Bi_R_Std , Bi_G_Std and Bi_B_Std)

[lucasb-eyer]

@Toz3wm is correct (again 😄) and @dingfg is correct too. I have added a note to the README.

[IssamLaradji]

what does compat refer to in the formula ? is it w ?

[lucasb-eyer]

@IssamLaradji from the readme:

These are label-compatibilites µ(xi, xj)

which is what they are called in the paper too. They are not visible in the formula screen-shotted by @Toz3wm.