See also

[6] Image Compression Through Level Lines and Wavelet Packets
[5] Compression des images par ondelettes : intérêt d'une approche géométrique
[4] Un algorithme de compression d'images basé sur une représentation mixte par lignes de niveau et paquets d'ondelettes
[3] Perceptible Level Lines and Isoperimetric Ratio
[2] A Compact and Multiscale Image Model Based on Level Sets
[1] A Functional Analysis Model for Natural Images Permitting Structured Compression

Those papers are all about image representation models based on level lines. In [1] (long paper), it is proved that the selection of the most perceptible level lines can separate the sketch information from the microtextures of a natural image. Application to image compression is introduced but not developed. In [2], the sketch model is presented in a scale-space framework. A criterion to select the most perceptible level lines which is based on the isoperimetric ratio of shapes is introduced in [3] (short paper). In [4], [5] (short papers) and [6] (long paper), the model detailed in [1] is applied to develop structured image compression schemes. The article in [6] is basically the long version of the conference proceeding [4], although the images are of different nature. Papers [4] and [6] are about compression of natural images, where the sketch is compressed using a geometric coder and where the microtextures are compressed within a wavelet packet basis. The conference proceeding [5] illustrates how the model can be adapted to fit to non-natural images, such as medical images (example of an angiography is given).