Talk:Harris affine region detector

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Chaosdruid (talk) 10:27, 24 March 2012 (UTC)

Is this formula wrong?

I think I found a mistake in a formula. I am writing on my diploma thesis for which I have studied the use of an extended Harris-filter for a certain application.

Shouldn't this

$A(\mathbf {x} )=\sum _{p,q}w(p,q){\begin{bmatrix}I_{x}^{2}(\mathbf {x} )&I_{x}I_{y}(\mathbf {x} )\\I_{x}I_{y}(\mathbf {x} )&I_{y}^{2}(\mathbf {x} )\\\end{bmatrix}}$

be this?

$A(\mathbf {x} )=\sum _{p,q}w(p,q){\begin{bmatrix}I_{x}^{2}(\mathbf {p,q} )&I_{x}I_{y}(\mathbf {p,q} )\\I_{x}I_{y}(\mathbf {p,q} )&I_{y}^{2}(\mathbf {p,q} )\\\end{bmatrix}}$

or alternatively something like this?

$A(\mathbf {x} )=\sum _{p,q}w(p,q){\begin{bmatrix}I_{x}^{2}(\mathbf {x+p,q} )&I_{x}I_{y}(\mathbf {x+p,q} )\\I_{x}I_{y}(\mathbf {x+p,q} )&I_{y}^{2}(\mathbf {x+p,q} )\\\end{bmatrix}}$

Otherwise you would integrate over only one position. My Prof agreed, so there should be something on it. — Preceding unsigned comment added by 134.2.100.132 (talk) 13:56, 16 December 2013 (UTC)

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