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grp-bio-it
image-analysis-training-resources
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8f724439
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8f724439
authored
Jun 17, 2019
by
Christian Tischer
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Make image_pixels.md compile with jekyll
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modules/image_pixels.md
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@@ -25,17 +25,17 @@ layout: page
*
Check where the lowest pixel indices are in the displayed image:
*
Most commonly: Upper left corner, which is different to conventional coordinate systems.
##
#
Activity: Explore image calibration
## Activity: Explore image calibration
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Open image: xyz_8bit_calibrated_anisotropic__mri_head.tif
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Open image: xyz_8bit_calibrated_anisotropic__mri_head.tif
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Check the calibration of this image
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Explore how image calibration affects spatial measurements, e.g.,
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Measure the distance between two pixels in the image
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Measure the size of an image region
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Appreciate that image calibration might be neccessary, e.g.
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Appreciate that image calibration might be neccessary, e.g.
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3D distance measurements
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Appreciate that image calibration can be confusing, e.g.
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not consistently used in image filter parameter specification
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not consistently used in image filter parameter specification
## Formative assessment
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@@ -44,12 +44,6 @@ True or false?
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The lowest pixel index of a 2D image always is
`[1,1]`
.
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When looking at a 2D image, the lowest pixel indices are always in the lower left corner.
### Formative assessment
Answer below questions:
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Given a voxel spacing of (100 nm, 100 nm, 300 nm), what is the distance between the voxels at indices [10, 5, 11] and [2, 20, 13]?
## Learn next
-
display.md
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