Contrast Enhancement with Iterated Bilateral Filters

Contrast enhancement in images via the product of linear filters

An operator based on Products of Linear Filters is introduced in this Communication to perform image contrast enhancement. Translation invariance and isotropy conditions are derived. The proposed technique avoids noise ampliication and is able to sharpen even small details.

Modified Adaptive Bilateral Filter for Image Contrast Enhancement

This paper proposes a two phase theme for removing noise and improves the resolution improvement victimization Adaptive bilateral filter. Within the initial part, to get rid of total variant regularization is employed to spot pixels that square measure probably to be contaminated by noise. Within the second part, the image is rebuilt employing a specialized technique that applies solely to thos...

Gradual edge enhancement in spiral phase contrast imaging with fractional vortex filters

In the spiral phase contrast imaging, the integer spiral phase plate (SPP) are generally employed to perform the radial Hilbert transform on the object. Here we introduce fractional SPP filters, instead of the integer ones, to investigate the gradual formation of edge enhancement for pure phase objects. Two spatial light modulators are used in our experimental configuration. One is addressed to...

Speech Enhancement with Kalman-filters in Subbands

This paper presents an approach for a Kalman filter in subbands to enhance noise-corrupted speech signals. We focus especially on the estimation of the necessary speech models. The resulting algorithm has less than 39 ms delay and thus fulfills the ETSI requirements for mobile telephony.

[Contrast enhancement].