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The enhanced image of the carving of a hilted dagger and axehead on 53 were created digitally using Picture Window Pro 3.1 as described below. |
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The original picture was taken with a Canon Powershot G5 5-megapixel camera at a distance of 35m (114ft), which is as close as possible given the restrictions on the public at Stonehenge. | |
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The image was cropped and heavily sharpened to enhance the edges. | |
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The sharpened image was equalized to balance the brightness across the range (color space HSV V, amount 71%) | |
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Two further images were obtained from the equalized
image. Left: High contrast (amount 100%, threshold 81%) Right: Embossed (radius 0.4, light angle 225°, height 3.8) |
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The two images were composed (30/100). Compare this with the laser scans by Wessex Archaeology / Archaeoptics Ltd. | |