On-line real-time sound film concentricity detection system based on field programmable gate array (FPGA) and detection method thereof

Abstract

The invention discloses an on-line real-time sound film concentricity detection system based on a field programmable gate array (FPGA) and a detection method thereof. The system comprises: a CCD camera, a video digit image acquisition module, a video digit image preprocessing module and the like. A signal output terminal of the CCD camera is connected with a signal input terminal of the video digit image acquisition module through a video decoding chip. The signal output terminal of the video digit image acquisition module is connected with the signal input terminal of the video digit image preprocessing module. The signal output terminal of the video digit image preprocessing module is connected with the signal input terminal of a real-time detection product in place module. The signal output terminal of the real-time detection product in place module is connected with the signal input terminal of a sound film inside and outside round edge detection module through a memory interface module and is connected with a video D / A chip respectively. The video D / A chip is connected with a VGA interface display. The signal output terminal of the sound film inside and outside round edge detection module is connected with the signal input terminal of an image analysis processing module. According to the invention, cost is low; a speed is fast; a volume is small and power consumption is low.

Description

technical field [0001] The invention relates to the field of embedded machine vision, in particular to an FPGA-based on-line real-time detection of concentricity of sound film including optical imaging, video processing, digital image processing and Field Programmable Gate Array (Field Programmable Gate Array, FPGA for short) technology The system and the detection method belong to the transformation technology of the on-line real-time detection system and the detection method of the sound film concentricity. Background technique [0002] In the 21st century, mankind has entered the information age. Information dissemination is inseparable from "seeing" and "listening", and "listening" cannot be separated from electro-acoustic devices. With the advent of the audio-visual era, the audio industry represented by electro-acoustic devices is an information terminal that is as important as the video industry, and its application fields are rapidly expanding. Information highway,...

AI Technical Summary

Problems solved by technology

[0003] At present, there are very few domestic researches on the machine vision detection system for the sound quality of the sound film, although someone has proposed a miniature sound film concentricity online detection system based on machine vision, which can detect the sound quality of the sound film without direct contact and at a higher speed , but this detection method is based on the traditional PC machine vision system, which is relatively expensive in cost, high in power consumption, and bulky, and is not easy to install in specific occasions with volume requirements. In order to reduce cost, volume, and power consumption, the An FPGA-based online real-time detection method for sound film concentricity, which realizes low-cost, low-power, small-volume, high-speed, real-time online sound film concentricity detection

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