Pyramidal directional filter banks and curvelets

A flexible multiscale and directional representation for images is proposed. The scheme combines directional filter banks with the Laplacian pyramid to provides a sparse representation for twodimensional piecewise smooth signals resembling images. The underlying expansion is a frame and can be designed to be a tight frame. Pyramidal directional filter banks provide an effective method to implement the digital curvelet transform. The regularity issue of the iterated filters in the directional filter bank is examined.

• Type: Conference
• Year: 2001
• Where: ICIP
• Authors: Minh N. Do, Martin Vetterli
• Keywords: Directional Filter Banks, Directional Representation, ICIP 2001, Image Processing, Pyramidal Directional Filter