Trace perimeter of binary image with line segments (bwperimtrace)

Traces the outer boundaries of non-zero pixels in a monochrome image
293 Downloads
Updated 24 Aug 2015

View License

Lines surrounding contiguous regions in an image can be extracted using MATLAB's built-in contour/contourc functions, but these functions perform linear interpolation between pixels leading to 'cut corners'. bwperim from the imaging toolbox will trace boundaries without interpolation, but only provides its result as a pixel map. This function, bwperimtrace, instead outputs line segments that entirely contain all non-zero pixels in the input image. The package also includes contourc4, a replacement for contourc, which doesn't perform any interpolation between pixels.

Cite As

Daniel Warren (2024). Trace perimeter of binary image with line segments (bwperimtrace) (https://www.mathworks.com/matlabcentral/fileexchange/49551-trace-perimeter-of-binary-image-with-line-segments-bwperimtrace), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2014a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired: Im2mesh (2D image to triangular meshes)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Version Published Release Notes
1.0.0.0

Update submission title to better reflect its purpose.