eric-guerin / terrain-amplification

Terrain amplification as described in [Sparse representation of terrains for procedural modeling, Guérin et al. 2016]

Terrain amplification (or super-resolution)

Terrain amplification implementation in Matlab as described in: Sparse representation of terrains for procedural modeling Eric Guérin, Julie Digne, Eric Galin, Adrien Peytavie Computer Graphics Forum. Volume 35, number 2. Proceedings of Eurographics 2016, Lisbon.

Dependencies

You must install ompbox and ksvdbox in order to execute this code.

Usage

terrain_super_resolution( factor, exemplarhr, inputterrain, output, masksize, offset_analysis, offset_synthesis)

Where:

• factor is the amplification factor
• exemplarhr : the high resolution exemplar filename
• inputterrain : the input terrain filename
• output : the output terrain filename
• masksize : the diameter of the patch on the low resolution input terrain and exemplar
• offset_analysis : offset of the patch extracted from the low resolution exemplar
• offset_synthesis : offset that will be used for the synthesis

Example

terrain_super_resolution(4,'grandcanyonhr.png','sketchlr.png',16,8,8);

Warning

When using too small values for offset or mask size, or too large images as exemplar, you could have memory issues.

Reference

If you use this code, you must reference this article:

@article {guerin2016,
	author = {Guérin, Eric and Digne, Julie and Galin, 
		Eric and Peytavie, Adrien},
	title = {Sparse representation of terrains for 
		procedural modeling},
	journal = {Computer Graphics Forum 
		(proceedings of Eurographics 2016)},
	volume = {35},
	number = {2},
	issn = {1467-8659},
	url = {http://dx.doi.org/10.1111/cgf.12821},
	doi = {10.1111/cgf.12821},
	pages = {177--187},
	year = {2016},
}