Re: hough transform
- From: "Ajay" <mishraka@xxxxxxxxx>
- Date: 11 Nov 2005 03:34:32 -0800
George Louloudis wrote:
>What i can not figure out is why
> to all the angles the sum at each angle in the accumulator matrix is equal
> to all others.I expect to see that in some direction there should be a
> bigger value.
U seem to be missing the point. Hough transform can be used to detect
points satisfying an analytical function y=f(x). Now, if that has the
form of a line, y=mx+c. In your accumulation matrix, you will get
larger value at an angle correspoding to slope of a line perpendicular
to it.
>The points i work on come from the gravity centers of connected
> components in an image.i search only in the direction -5 degrees to 5
> degrees because the document has none or very little skew angle.
> Please help me!!
It's not clear what are you detecting in the image. Explain you problem
in a bit more elaborate way, the purpose and motivation for it.
Good Luck!!
-Ajay
.
- References:
- hough transform
- From: George Louloudis
- hough transform
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