I am developing a 3D graphic application in which the user can draw curves. I record the curve that is drawn by the user and i would like to create a smooth nurb from the recorded set of points. I tried using the openNurbs library but i could not find a way to do the fitting using the library. How can i fit a set of points to a nurb?
Related Questions in MATH
- Delay in loading Html Page(WebView) from assets folder in real android device
- MPAndroidChart method setWordWrapEnabled() not found
- Designing a 'new post' android activity
- Android :EditText inside ListView always update first item in the listview
- Android: Transferring Data via ContentIntent
- Wrong xml being inflated android
- AsyncTask Class
- Unable to receive extras in Android Intent
- Website zoomed out on Android default browser
- Square FloatingActionButton with Android Design Library
Related Questions in GRAPHICS
- Delay in loading Html Page(WebView) from assets folder in real android device
- MPAndroidChart method setWordWrapEnabled() not found
- Designing a 'new post' android activity
- Android :EditText inside ListView always update first item in the listview
- Android: Transferring Data via ContentIntent
- Wrong xml being inflated android
- AsyncTask Class
- Unable to receive extras in Android Intent
- Website zoomed out on Android default browser
- Square FloatingActionButton with Android Design Library
Related Questions in NURBS
- Delay in loading Html Page(WebView) from assets folder in real android device
- MPAndroidChart method setWordWrapEnabled() not found
- Designing a 'new post' android activity
- Android :EditText inside ListView always update first item in the listview
- Android: Transferring Data via ContentIntent
- Wrong xml being inflated android
- AsyncTask Class
- Unable to receive extras in Android Intent
- Website zoomed out on Android default browser
- Square FloatingActionButton with Android Design Library
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
First of all, I don't think you need nurbs. Fitting a B-spline curve to your data points should be good enough.
If you only have a few dozen points, then it is likely you would like the B-spline curve to exactly pass thru these data points. In this case, you are looking for spline interpolation algorithms. If this is the case, you can use Catmull Rom spline or Overhauser spline to interpolate your data points. Both will create C1 cubic splines and both are easy to implement without the need to solve a linear equation set.
If you have several hundreds of points, then it is likely that you only want the B-spline curve to lie close to the data points. Then, the algorithm you are looking for is least square fitting. You can find plenty of articles (e.g.: link1 ) in this area online. A typical algorithm for least square fitting with B-spline curve will involve these steps:
1) Choose a parametrization for your data points. Chord length parametrization is typically a good choice for least square fitting.
2) Choose the degree for the B-spline. Typically, we use degree 3, i.e., cubic B-spline.
3) Decide number of control points for your B-spline.
4) Decide the knot vector based on the information in the first 3 steps.
5) Solve a linear equation set to find the control points of the B-spline.