本文選題：機(jī)器視覺 + LED顯示屏測(cè)試　； 參考：《哈爾濱工程大學(xué)》2007年碩士論文

【摘要】： 大屏幕顯示在商務(wù)會(huì)議、教學(xué)講座、廣告宣傳、工業(yè)監(jiān)控等方面都有廣泛的應(yīng)用。LED拼接顯示屏作為實(shí)現(xiàn)大屏幕顯示的一種方法也得到了廣泛的使用。近年來，隨著國(guó)內(nèi)外在LED材料和控制技術(shù)方面不斷踴躍出新的成果，LED顯示屏產(chǎn)業(yè)已發(fā)展成為新興的高科技產(chǎn)業(yè)。但是，在我國(guó)對(duì)LED顯示屏的質(zhì)量檢測(cè)在很大程度上仍然依靠人工來完成，使檢測(cè)速度和檢測(cè)質(zhì)量受個(gè)人主觀程度影響很大。 失控點(diǎn)數(shù)目、色度均勻性是評(píng)價(jià)LED顯示屏顯示質(zhì)量的兩個(gè)重要指標(biāo)。因此，本文的研究?jī)?nèi)容主要圍繞著解決這兩個(gè)問題進(jìn)行展開。把機(jī)器視覺技術(shù)融入到對(duì)全彩色LED顯示屏的檢測(cè)過程中，研發(fā)一種價(jià)格相對(duì)低廉的LED顯示屏智能化測(cè)試系統(tǒng)。 文章首先對(duì)LED顯示屏的發(fā)展概況進(jìn)行了介紹，重點(diǎn)分析了LED顯示屏在生產(chǎn)、檢測(cè)和使用過程中存在的問題。然后對(duì)機(jī)器視覺系統(tǒng)的開發(fā)環(huán)境LabWindows/CVI進(jìn)行簡(jiǎn)單介紹，，并針對(duì)實(shí)際問題提出真彩色顯示模塊測(cè)試系統(tǒng)的硬件系統(tǒng)設(shè)計(jì)流程。再?gòu)纳葘W(xué)角度對(duì)顯示屏顏色均勻性進(jìn)行了分析，并提出從三基色色品坐標(biāo)和白平衡兩個(gè)方面對(duì)LED顯示屏的顏色均勻性調(diào)整的方案。最后，運(yùn)用圖像分割、圖像定位與標(biāo)記、圖像配準(zhǔn)等技術(shù)對(duì)顯示屏檢測(cè)軟件流程進(jìn)行設(shè)計(jì)，給出了具體的設(shè)計(jì)流程并對(duì)實(shí)驗(yàn)結(jié)果進(jìn)行分析。實(shí)驗(yàn)表明通過該系統(tǒng)可以實(shí)現(xiàn)對(duì)顯示屏指標(biāo)的快速檢測(cè)，并可以根據(jù)要求，在一定范圍內(nèi)對(duì)顯示屏的色彩保真度進(jìn)行調(diào)整。
[Abstract]:Large screen display has been widely used in business conferences, teaching lectures, advertising, industrial monitoring and other aspects of the application of .LED splicing display screen as a way to achieve a large screen display has been widely used. In recent years, LED display screen industry has developed into a new high-tech industry with new achievements in materials and control technology at home and abroad. However, in our country, the quality testing of LED display screen still depends on manual to a large extent, so the speed and quality of detection are greatly affected by the subjective degree of individuals. The number of points out of control and chromaticity uniformity are two important indexes to evaluate the display quality of LED display screen. Therefore, this paper mainly focuses on solving these two problems. This paper introduces machine vision technology into the detection process of full-color LED display, and develops an intelligent testing system for LED display screen with relatively low price. In this paper, the development of LED display screen is introduced, and the problems existing in the production, detection and use of LED display screen are analyzed. Then the development environment of machine vision system, LabWindows/CVI, is briefly introduced, and the hardware system design flow of the real color display module test system is put forward in view of the practical problems. The color uniformity of the display screen is analyzed from the perspective of chromaticity, and the scheme of adjusting the color uniformity of the LED display screen from the coordinate of three primary colors and the white balance is put forward. Finally, image segmentation, image location and marking, image registration and other technologies are used to design the software flow of screen detection. The specific design flow is given and the experimental results are analyzed. The experimental results show that the system can quickly detect the display screen index and adjust the color fidelity of the display screen in a certain range according to the requirements.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2007
【分類號(hào)】：TN873;TP274

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 馮松;;基于AVR單片機(jī)LED顯示屏系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J];信息安全與技術(shù);2010年10期

相關(guān)碩士學(xué)位論文 前1條

1 董文曉;基于CCD相機(jī)測(cè)量的LED顯示屏亮度和色度均勻性算法研究[D];西安電子科技大學(xué);2012年

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