Use relative imports in skimage files

skimage/io/_plugins/imread_plugin.py

@@ -1,6 +1,6 @@
 __all__ = ['imread', 'imsave']
 
-from skimage.util.dtype import convert
+from ...util.dtype import convert
 
 try:
     import imread as _imread
@@ -33,7 +33,7 @@ def imsave(fname, arr, format_str=None):
     arr : ndarray of uint8 or uint16
         Array (image) to save.
     format_str: str,optional
-        Format to save as. 
+        Format to save as.
 
     Notes
     -----

skimage/io/_plugins/pil_plugin.py

@@ -4,9 +4,8 @@ import numpy as np
 from six import string_types
 from PIL import Image
 
-from skimage.util import img_as_ubyte, img_as_uint
-from skimage.external.tifffile import (
-    imread as tif_imread, imsave as tif_imsave)
+from ...util import img_as_ubyte, img_as_uint
+from ...external.tifffile import imread as tif_imread, imsave as tif_imsave
 
 
 def imread(fname, dtype=None, img_num=None, **kwargs):

skimage/io/_plugins/skivi.py

@@ -209,7 +209,7 @@ class SkiviImageWindow(QMainWindow):
         self.rgb_hsv_disp.update_vals((x, y, r, g, b, h, s, v))
 
     def save_to_stack(self):
-        from skimage import io
+        from ... import io
         img = self.arr.copy()
         io.push(img)
         msg = dedent('''
@@ -227,7 +227,7 @@ class SkiviImageWindow(QMainWindow):
         dialog.exec_()
 
     def save_to_file(self):
-        from skimage import io
+        from ... import io
         filename = str(QtGui.QFileDialog.getSaveFileName())
         if len(filename) == 0:
             return

skimage/io/_plugins/tifffile_plugin.py

@@ -1 +1 @@
-from skimage.external.tifffile import imread, imsave
+from ...external.tifffile import imread, imsave

skimage/io/_plugins/util.py

@@ -2,7 +2,7 @@ import numpy as np
 from . import _colormixer
 from . import _histograms
 import threading
-from skimage.util import img_as_ubyte
+from ...util import img_as_ubyte
 
 # utilities to make life easier for plugin writers.