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In order to attenuate the added noise by electric network used by myoelectric signals acquisition equipment, in this research work, it is developed an IIR digital filter implemented on FPGA. This filter removes a specific spectra frequencies without adding noise to the signal, which allows a better performance in the usage that is given to the signals. The filter coefficients are taken and proved...
Trilateral filtering presents an edge preserving smoothing filter. The predecessor of Trilateral filtering, the bilateral filter is a non-linear filtering technique that can reduce noise from an image while preserving the strong and sharp edges, but it cannot provide desired result when the edges have valley or ridge like features. The Trilateral filter is extended to be a gradient-preserving filter,...
To remove the (salt and pepper)impulse noise from images by using the Median Filter. This algorithmic rule is employed for low, medium and high noise densities. Additionally, to preserve edges and sharp image features. The proposed technique is implemented by developing in MATLAB and additionally implemented by using the Xilinx Spartan3 FPGA device. With this planned algorithmic rule less area is...
Nuclear spectrum is the important information in domain of nuclear physics research. Radiation detection and applications of nuclear technology, nuclear spectrum measurement technique have been a hot issue. And one of the key technologies of digital nuclear spectrum measurement technology is how to achieve digital filter-shaping algorithm on the digital processing device. Base on Sallen-Key filter...
Adaptive signal processing plays an important role in small signal detection. This article discussed about the basic principle of the adaptive filter. According to practical output of detection circuit in MEMS acceleration sensor, reference and input signal can be easily acquired. LMS and RLS algorithm were simulated by Matlab and the digital filter was achieved in FPGA. SNR of the output signal of...
Image filtering plays an important role in image preprocessing. The median filters, including the standard median filter and the multi-level median filter, which can preserve image features and thin lines are introduced and discussed in detail. After that, the FPGA based solution for the algorithms of these two filters are presented. This paper also gives account to the FPGA implementation of the...
The objective of this paper is to construct a real time hardware image processing system on field programmable gate array (FPGA). The chosen image processing algorithm is a single color filtering algorithm. This work utilizes Altera DE2 development board empowered by the Cyclone II FPGA paired with a 1.3 mega pixel CMOS camera from Terasik Technologies. Verilog HDL is chosen as the hardware programming...
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