Parallel filtering method and corresponding device

Abstract

The invention discloses a parallel filtering method and a corresponding device. The device comprises a multi-granularity storer, a data caching device, a coefficient buffering and broadcasting device, a vector operation device and a command queuing device, wherein the multi-granularity storer is used for storing to-be-filtered data, a filtering coefficient and filtering result data; the data caching device is used for caching, reading and updating the to-be-filtered data taken out; the coefficient buffering and broadcasting device is used for caching and broadcasting the filtering coefficient taken out; the command queuing device is used for storing and outputting a parallel filtering operation command; and the vector operation device is used for conducting vector operation based on the to-be-filtered data and output coefficient data, and for writing an operation result in the multi-granularity storer. The invention further discloses the parallel filtering method. According to the parallel filtering method and the corresponding device, the filtering speed is high; the access storage time is reduced; the service efficiency of the data is improved; the power consumption is reduced; and an application scope is wide.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a parallel filtering method and its circuit realization structure in integrated circuit design. Background technique [0002] In signal processing systems such as image processing, image filtering is an indispensable processing operation for images with a low signal-to-noise ratio. [0003] In the existing solutions, there are mainly two types of methods to achieve filtering: the first type of method is to use programmable devices, such as FPGA, CPLD, etc., to design specific filters for different applications. This method has a certain real-time However, due to the inherent weakness of programmable devices, this method cannot achieve a high main frequency and is relatively single in function. For example, the patent application No. 200310105132 discusses how to use CPLD and single-chip microcomputer to realize a two-dimensional filter. This method is based...

AI Technical Summary

Problems solved by technology

Since the traditional signal processor needs to repeatedly load the data to be filtered, this method will cause a large access overhead, and the filtering efficiency is low

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