[python-dtcwt] 307/497: docs: add description of registration flow chart

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to branch debian/sid
in repository python-dtcwt.

commit 6a3f97198fad7b8347160762c4e6b42102bd6bee
Author: Rich Wareham <rjw57 at cam.ac.uk>
Date:   Fri Jan 31 16:11:16 2014 +0000

    docs: add description of registration flow chart
---
 docs/registration.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/registration.rst b/docs/registration.rst
index bbeae72..8d15860 100644
--- a/docs/registration.rst
+++ b/docs/registration.rst
@@ -236,6 +236,15 @@ The following flow diagram, taken from the paper, illustrates the algorithm.
 .. figure:: registration-flow.svg
     :figclass: align-center
 
+The pair of images to be registered are first transformed by the DTCWT and
+levels to be used for motion estimation are selected. The subband coefficients
+of the source image are shifted according to the current motion field estimate.
+These shifted coefficients together with those of the reference image are then
+used to generate motion constraints. From these the
+:math:`\mathbf{\tilde{Q}}_\mathbf{\chi}` matrices are calculated and the local
+affine distortion parameters updated. After a few iterations, the distortion
+parameters are used to warp the source image directly.
+
 Using the implementation
 ------------------------
 

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