CI: need to simplify CI scripts

See merge request orfeotoolbox/otb!423

Fix doxygen test

See merge request orfeotoolbox/otb!422

Warning on GetJacobian with GitlabCI

See merge request orfeotoolbox/otb!420

This reverts commit 51cf7669.

This reverts commit 61e3b5ca.

CI: enable ccache on ubuntu-llvm

See merge request orfeotoolbox/otb!418

COMP: fix build error (missing include)

See merge request orfeotoolbox/otb!417

CI setup all pipelines

See merge request orfeotoolbox/otb!416

Logging in python wrapper

See merge request orfeotoolbox/otb!405

Reorder cookbook sections and update style

See merge request orfeotoolbox/otb!415

Test using numpy

See merge request orfeotoolbox/otb!409

PERF: Optimize compare image

See merge request orfeotoolbox/otb!410

Luc Hermitte authored 6 years ago and Victor Poughon committed 6 years ago

The `DifferenceImageFilter` is often used on `VectorImage`s, in particular when
doing `compare-image`.

Creating new `VariableLengthVector` pixels at each iteration, or casting them
will automatically end up in construction and destruction of VLV pixels, and
thus allocation and liberation of heap memory. This is not efficient.

This commit aims at minimizing the number of allocation by factorizing out
everything that can be (pixel size, typical max value, typical zero value).
Resetting value is done by assignment, which has the good property of not
inducing any allocation on VLV variables.

PERF: Improve FunctorImageFilter performances

See merge request orfeotoolbox/otb!413

Luc Hermitte authored 6 years ago and Victor Poughon committed 6 years ago

`itk::UnaryFunctorImageFilter` only updates the progress reporter once per
line.
This commit mimics that behaviour.

The performance improvment is small, less than 10% on simple filters like a
scaling filter that multiplies pixel values.