BUG: RenderCompressed region != crop

[wmoore]

Python test in OmeroPy/test/integration/bigImages.py

Logic of the test:

• Create a 3 x 2 image (rendered greyscale)
• RenderCompressed? the whole image plane (String)
• Use PIL to create image from string (and array from Image)
• Crop the 2D numpy array to a 2x2 array
• Add a regionDef and render the same plane again
• Convert to PIL and numpy array (2x2) to inspect values
• The two numpy arrays are not equal (test print-out below)

However, the images look the same.

wjm:OmeroPy will$ PYTHONPATH=$PYTHONPATH:/opt/Ice-3.3.1/python:.:test:build/lib ICE_CONFIG=/Users/will/Desktop/OMERO/etc/ice.config python test/integration/bigImages.py
testRenderRegion
sizeX 3 sizeY 2
[[0 1 2]           # pixel values of 3x2 array
 [0 1 2]]
Image ID 5351
(2, 3, 3)         # shape of rendered array (2 x 3 x rgb)

[[[  1   1   1]   # pixel values of rendered array - top row
  [127 127 127]
  [255 255 255]]

 [[  1   1   1]   # bottom row 
  [127 127 127]
  [255 255 255]]]

(2, 2, 3)           # shape of array cropped 2 x 2 x rgb
[[[  1   1   1]     # top row - 2 pixels
  [127 127 127]]

 [[  1   1   1]      # bottom row - 2 pixels
  [127 127 127]]]
5aad4715b0fd98c724dcdbe2c6e90d3942bb4c21  # hash of cropped image

(2, 2, 3)            # size of array from rendered region
[[[  0   0   0]      # rendered region - top row
  [128 128 128]]

 [[  0   0   0]
  [128 128 128]]]
4f1e376ce1196c2697ff04decbb55342f1a9adbb   # hash of rendered region
.
----------------------------------------------------------------------
Ran 1 test in 2.728s

OK

[jburel <j.burel@…>]

(In [db18ab4540c3f5dc0e169adb53c20b074eb49472/ome.git] on branch develop) Add test for render region and stride, fix bugs (close #4280)