From 79cf2dc7142f00cf01a722640e4c9aa8dab01f15 Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauld.mccarthy@gmail.com>
Date: Tue, 19 Apr 2016 16:40:46 +0100
Subject: [PATCH] New ProxyImage class, to represent derived images. This may
change.
---
fsl/data/image.py | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/fsl/data/image.py b/fsl/data/image.py
index d02af981d..bc05875e8 100644
--- a/fsl/data/image.py
+++ b/fsl/data/image.py
@@ -5,8 +5,9 @@
#
# Author: Paul McCarthy <pauldmccarthy@gmail.com>
#
-"""This module provides the :class:`Image` class, for representing 3D/4D NIFTI1
-images. The ``nibabel`` package is used for file I/O.
+"""This module provides the :class:`Nifti1` and :class:`Image` classes, for
+representing 3D/4D NIFTI1 images. The ``nibabel`` package is used for file
+I/O.
.. note:: Currently, only NIFTI1 images are supported.
@@ -570,6 +571,34 @@ class Image(Nifti1, props.HasProperties):
self.dataSource, newMin, newMax))
return newMin, newMax
+
+
+class ProxyImage(Image):
+ """The ``ProxyImage`` class is a simple wrapper around an :class:`Image`
+ instance. It is intended to be used to represent images or data which
+ are derived from another image.
+ """
+
+ def __init__(self, base, *args, **kwargs):
+ """Create a ``ProxyImage``.
+
+ :arg base: The :class:`Image` instance upon which this ``ProxyImage``
+ is based.
+ """
+
+ if not isinstance(base, Image):
+ raise ValueError('Base image must be an Image instance')
+
+ self.__base = base
+
+ kwargs['header'] = base.nibImage.get_header()
+
+ Image.__init__(self, base.data, *args, **kwargs)
+
+
+ def getBase(self):
+ """Returns the base :class:`Image` of this ``ProxyImage``. """
+ return self.__base
# TODO The wx.FileDialog does not
--
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