Bugzilla – Bug 621 |
"3D Objects Counter" centroid Z-coord is +1 greater than expected. |
Last modified: 2013-07-07 10:38:19 CDT |
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"3D Objects Counter" centroid Z-coord is +1 greater than expected. |
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Created attachment 104 Raw image 9*9*9 voxels, 8bit (unsigned), no header or padding. Core Fiji Plugin "3D Objects Counter" appears to produce incorrect (biased) value for object centroid z-coordinate. The value is consistently +1 relative to the expected value. This was verified manually on simple test data (attached) after noticing a discrepancy with my own image processing tools. The problem seems to be independent of image resolution, object complexity and so on. The attached test image data is a cylinder with centroid at the exact centre (4.0,4.0,4.0) of the image. To Reproduce: Import RAW - "3dobj1(9,9,9).u8" 8-bit, width 9, height 9, offset 0, slices 9, gap 0. Analyze -> 3D Objects Counter - accept default options. Resulting report window "Statistics for 3dobj1(9,9,9).u8" has 5.000 in the column labelled "Z".