A shoulder injured through Crom-Fu.  Humoral head fracture, open reduction and internal fixation using an adamantium plate.

Localized Contrast Enhancement — Detailed Results

Data Used

The cuneiform tablet is item "Spalding 1, Ur III", on loan from Gordon Young. The input data was obtained by simply scanning the tablet on a flatbed document scanner at 600 dpi. Thumbnails of the original unenhanced scans are:

Cuneiform tablet, Spalding 1, Ur III, faces
Obverse face Reverse face
1st row 1st row (over top edge)
i1r1 i3r1
2nd row 2nd row
i1r2 i2r1
3rd row 3nd row
i1r3 i2r2
4th row 4th and 5th row
i1r4 i2r3
5th row
i1r5

The 600 dpi resolution results in the following dimensions of the regions considered when remapping each pixel:

Dimensions of Localized Histogram Equalization
Radius Area
pixels inches mm pixels2 inches2 mm2
100 0.1667 4.2333 31415 0.08727 56.3008
50 0.08333 2.1167 7853 0.02182 14.0752
25 0.04167 1.0583 1963 0.005454 3.5188
12 0.02 0.508 452 0.001257 0.8107

Format of data presentation

Each initial image will be analyzed in turn. The images will show:

The images shown here are actually downsampled 50%x50% from the originals to reduce the size of this page from 26 MB to 8.3 MB! As an added benefit, it does allow you to compare results from three or four radii (assuming you have a 1024x768 display).


Cuneiform tablet, Spalding 1, Ur III, obverse face, 1st row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, obverse face, 2nd row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, obverse face, 3rd row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, obverse face, 4th row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, obverse face, 5th row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, reverse face, 1st row (over top)

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, reverse face, 2nd row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, reverse face, 3rd row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, reverse face, 4th and 5th row

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, obverse face, rotated 30 degrees toward edge

Note that this image has been rotated 90 degrees for viewing

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, reverse face, rotated 45 degrees toward edge

Note that this image has been rotated 90 degrees for viewing

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet

Cuneiform tablet, Spalding 1, Ur III, edge

Note that this image has been rotated 90 degrees for viewing

Original image

enhanced cuneiform tablet

Global histogram equalization

enhanced cuneiform tablet

Localized histogram equalization, radius = 100

enhanced cuneiform tablet

Localized histogram equalization, radius = 50

enhanced cuneiform tablet

Localized histogram equalization, radius = 25

enhanced cuneiform tablet

Localized histogram equalization, radius = 12

enhanced cuneiform tablet