Structure-preserving manipulation of photographs

International Symposium on Non-Photorealistic Animation and Rendering (NPAR) - aug 2007
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Visual content is often better communicated by simplified or exaggerated images than by the “real world like” images. In this paper, we offer a tool for creating such enhanced representations of photographs in a way consistent with the original image content. To do so, we develop a method to identify the relevant image structures and their importance. Our approach (a) uses edges as the basic structural unit in the image, (b) proposes tools to manipulate this structure in a flexible way, and (c) employs gradient domain image processing techniques to reconstruct the final image from a “cropped” gradient information. This edge-based approach to nonphotorealistic image processing is made feasible by two new techniques we introduce: an addition to the Gaussian scale space theory to compute a perceptually meaningful hierarchy of structures, and a contrast estimation method necessary for faithful gradient-based reconstructions. We finally present various applications that manipulate image structure in different ways.

Images and movies


See also

Matlab source code available here.

BibTex references

  author       = "Orzan, Alexandrina and Bousseau, Adrien and Barla, Pascal and Thollot, Jo{\"e}lle",
  title        = "Structure-preserving manipulation of photographs",
  booktitle    = "International Symposium on Non-Photorealistic Animation and Rendering (NPAR)",
  month        = "aug",
  year         = "2007",
  url          = ""

Other publications in the database

» Alexandrina Orzan
» Adrien Bousseau
» Pascal Barla
» Joëlle Thollot