Database Reference
In-Depth Information
Fig. 6.1
Cartridge base cases and 40
×
microscopes fitted with two color charge-coupled device
(CCD) cameras
Fig. 6.2
Example of images captured by the imaging system, organized as image pairs showing
similar marks from the same firearm
The contrast-enhancement transformation is applied to the image by the L2-norm
energy normalization. This utilizes a
relative gray scale
to enhance the two images
being compared according to their energy. The enhancement method is different
from the traditional enhancement methods, which usually transform image intensity
into some standard scales. Let
{
[
,
]
}
{
[
,
]
}
be, respectively, the reference
image and the corresponding cartridge case images being compared, where
i
f
i
k
and
g
i
k
,
k
Search WWH ::
Custom Search