8(c) shows the output of the image filter
with Perona and Malik, Charbonnier, and Weickert functions, respectively.
Guided Image Filter
. In the guided image filter
, [[phi].sub.1](i) = [epsilon], the expressions of [a.sub.k] and [b.sub.k] can be obtained according to (4)-(7) shown as follows:
Zhao, "Detail enhancement for high-dynamic-range infrared images based on guided image filter
," Infrared Physics & Technology, vol.
1) A guided image filter
is first performed on PANI with INT served as guidance image.
A 256 x 256 Lena image corrupted by Salt & Pepper noise (5 % pixels with white or black shots) was used for training our evolved image filter
. The employed EA is (1 + [lambda]) evolutionary strategy, where [lambda] = 4.
In this paper, we proposed a new 3D image filter
called sliding volume filter (SVF) to enhance the 3D neuron image data sets and then the most listed voxels were chosen as the final seed points.
Its purpose was to obtain an increasing quality of the final image by applying an image filter
. Best results were obtained with a Gaussian filter:
Mizoguchi, "Image filter
design for fingerprint enhancement", in Proc.
Antispam filters can now be updated over the Internet, just like virus signatures and scanning engines, and users will also have access to additional filters, including Image Filter
, at no extra cost.
The signal moves off chip to the image filter
then back on to the mixer, which is a double-balanced differential mixer with an additional pre-amplifier at its input that boosts gain and improves noise figure.
Cascaded LNA/mixer gain is 26 to 28 dB (including a 3.5 dB loss image filter
), single-side-band noise figure is 2.5 dB (typ) and third-order input intercept point (IIP3) ranges from -11 to -14 dBm (product dependent).
Guided Image Filter
and Modified Guided Image Filter
 proposed a new type of explicit image filter
with the name guided filter.
However, the active filter could find application as an image filter
placed before a mixer if the filter is preceded by a low noise amplifier (LNA).
In four dehazing contrast-enhancement filters, the best edge-preserving characteristic is the guided image filter
, followed by the bilateral filter, median filter, and NLM filter.