# Basic B-spline Curve for a Dummy?

by vee6
Tags: basic, bspline, curve, dummy
 P: 28 What first thing I should do to solve the function of a basic open b-spline curve where the coordinate of its control points are such as written below? x1,y1 = 0,0 x2,y2 = 1,3 x3,y3 = 3,5 x4,y4 = 5,6 x5,y5 = 7,5 x6,y6 = 9,3 x7,y7 = 10,0
 P: 28 What is the next?
P: 6,035
Basic B-spline Curve for a Dummy?

 Quote by vee6 What is the next?
 P: 28 What is the b-spline interpolation? Please show me the example.
Mentor
P: 21,216
 Quote by vee6 What is the b-spline interpolation? Please show me the example.
Are you asking us to do your work for you? That's not how it works here at Physics Forums.

Did you find some references as mathman suggested? If so, do you have any questions about the process?
P: 28
 Quote by Mark44 Are you asking us to do your work for you?
No.

I am a dummy and want to learn about b-spline.

I am not working yet.

 Quote by Mark44 Did you find some references as mathman suggested? If so, do you have any questions about the process?
Yes I did.

However it's not b-spline but spline without "b".

It's from wikipedia.

Spline interpolation.

Please show me an easy simple example of the b-spline interpolation.
 Mentor P: 21,216 Here's a link to a Wiki article on b-splines: http://en.wikipedia.org/wiki/B-spline. There are some examples about halfway down the page.
P: 28
 Quote by Mark44 There are some examples about halfway down the page.
Which one?
Mentor
P: 21,216
Take your pick. As for myself, I would go for the Uniform cubic b-spline.

 Quote by vee6 Please show me an easy simple example of the b-spline interpolation.
Without knowing what your mathematical background is, it's difficult to tell what constitutes "easy" or "simple."
 P: 343 A few questions for you: 1) When you talk about "solving the function" of the B-spline, what do you mean? Are you talking curve evaluation? 2) What degree do you want the resulting B-spline curve? 3) What kind of continuity do you want between points? Do you want C0? C1? C2? 4) What interval do you want to the resulting B-spline curve to have? [0,1] or something else? If you can answer those questions, I'm sure people would be willing to help you.
 P: 4 If you want some more info look at this site: http://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/ if you really want to understand i suggest you buy a book called An Introduction to NURBS: With Historical Perspective. it will start you out with some parametric curves and bezer to then introduce b-splines. I suggest you learn how to program, if you don't already since it can be very monotonous. Other than that I can't really help you since I barely understand it myself.

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