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Modeling method of spatial filter

A technology of spatial filter and modeling method, applied in the direction of digital adaptive filter, impedance network, adaptive network, etc., can solve problems such as affecting the filtering speed, and achieve the effect of improving speed and speed advantages

Pending Publication Date: 2020-01-03
KUANG CHI CUTTING EDGE TECH LTD
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  • Application Information

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Problems solved by technology

[0008] The present invention aims at defects such as the existing LMS algorithm utilizing the serial sampling mode and the sequential execution of the CPU instruction of the DSP, which greatly affects the filtering speed, and provides a modeling method of the spatial filter that can solve the above-mentioned problems

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts all belong to the protection scope of the present invention.

[0042] This patent uses the digital signal processing special tool software DSP Builder of FPGA, wherein, Altera DSPBuilder integrates algorithm development, simulation and verification functions of MathWorks MATLAB and Simulink system-level design tools with VHDL synthesis, simulation and Altera development tools, and realizes Integration of th...

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Abstract

The invention provides a modeling method of a spatial filter. The modeling method of a spatial filter comprises the following steps: acquiring a formula of an adaptive filtering algorithm; and changing a formula of an adaptive filtering algorithm into a pipelined adaptive filtering algorithm formula, wherein the pipelined adaptive filtering algorithm formula estimates a current desired signal based on an input signal and an error signal before a predetermined moment to achieve parallel operation. According to the modeling method of a spatial filter, a relaxed delay technology and a relaxed technology are adopted, and a serial algorithm is modified into a pipelined adaptive filtering algorithm capable of parallel processing. Therefore, the filtering speed is greatly improved through parallel operation.

Description

technical field [0001] The present invention generally relates to the technical field of digital signal processing, and more specifically, relates to a spatial filter modeling method. Background technique [0002] Spatial filtering is an image enhancement method using filtering processing. Its theoretical basis is spatial convolution and spatial correlation. The purpose is to improve image quality, including removal of high-frequency noise and interference, image edge enhancement, linear enhancement, and deblurring. Divided into low-pass filtering (smoothing), high-pass filtering (sharpening) and band-pass filtering. Processing methods include computer processing (digital filtering) and optical information processing. [0003] In the 1960s, B.Widrow et al. proposed the least mean square (LMS) algorithm. figure 1 Implement the schematic for the LMS algorithm. like figure 1 As shown, the LMS algorithm has a simple structure and is robust to changes in the statistical cha...

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Application Information

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IPC IPC(8): H03H21/00
CPCH03H21/0043H03H2021/0049H03H2021/007H03H21/00
Inventor 刘若鹏赵治亚曹春柳
Owner KUANG CHI CUTTING EDGE TECH LTD