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Add noise to input image:

Choose class 1-4, then click into the image to set label:

Choose regularization strength $\lambda$:

Try dragging & dropping your own images into the window!

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This page demonstrates how to solve a variational multiclass labeling problem. By finding the minimizer $u$ of the relaxed energy $$\int_\Omega \langle u(x),s(x)\rangle \mathrm{d}x + \lambda \mathrm{TV}(u)$$ over all functions $u:\Omega \to \Delta_L$, where $L$ is the number of labels, one obtains an "almost binary" solution, which can be thresholded if necessary.

**Authors:** Benedikt Loewenhauser, Kevin Schober, Jan Lellmann (lellmann@mic.uni-luebeck.de)

- Open settings panel on the top left.
- Optionally: Add Gaussian noise.
- For every label mark typical pixels by clicking into the image.
- Select a regularization strength $\lambda$.
- Click to show the result.
- You may also try different input images (input in the top right).

- J. Lellmann, C. Schnoerr: Continuous Multiclass Labeling Approaches and Algorithms. SIAM J. Imaging Sci., 4(4), 2011.