【正文】 ...................................................................... 79 圖像拼接程序的實現(xiàn) ........................................................................................ 85 圖像拼接的原理 ........................................................................................... 86 拼接程序 ....................................................................................................... 86 圖像采集系統(tǒng)的采集軟件部分 ........................................................................ 89 多線程技術(shù) ................................................................................................... 89 線程定義 ....................................................................................................... 90 線程特點 ....................................................................................................... 91 多線程應(yīng)用 ................................................................................................... 92 大幅面掃描儀在 Windows 環(huán)境下的多線程 .............................................. 93 CCD 的圖像采集軟件系統(tǒng)的設(shè)計與實現(xiàn) _碩士學(xué)位論文 CCD 的圖像采集軟件系統(tǒng)的設(shè)計與實現(xiàn) _碩士學(xué)位論文 軟件系統(tǒng)的測試 ................................................................................................ 94 測試環(huán)境 ..................................................................................................... 94 測試結(jié)果 ..................................................................................................... 94 本章小結(jié) ........................................................................................................... 95 第 五章 結(jié)束語 ............................................................................................................ 96 致謝 ................................................................................................................................ 98 參考文獻 ........................................................................................................................ 994 第二章 多 CCD 掃描儀概述 掃描儀的原理 掃描儀根據(jù)用途可分為三類，分別是滾筒式式、便攜式和平板式三種。 第四章首先敘述了軟件系統(tǒng)構(gòu)架的定義和重要性，提出大幅面掃描儀軟件系 統(tǒng)的三層結(jié)構(gòu)設(shè)計，即底層硬件、中間嵌入式層和上層驅(qū)動程序，通過功能模塊 化的劃分，實現(xiàn)大幅面掃描儀的整體設(shè)計。 論文的組織結(jié)構(gòu)及章節(jié)安排 本文首先對課題的背景做了一些概述，之后將介紹工作的概要，之后的其他 章節(jié)是對課題的詳盡闡述。圍繞掃描儀驅(qū)動程序軟件及硬件的設(shè)計及開發(fā)了解了很多關(guān)于的國內(nèi)外文獻 和領(lǐng)域的現(xiàn)狀和發(fā)展方向。采用若干種的架構(gòu)模型是研發(fā)人員在進行軟件系統(tǒng)架構(gòu)設(shè)計的一 般策略，由于缺少標(biāo)準(zhǔn)明朗的描述，導(dǎo)致無法實現(xiàn)設(shè)計方式的共享。 最后，通過對系統(tǒng)的硬件及軟件的測試。為了能夠掃描大幅面的圖像，一種有效的辦法 就是通過多個傳感器獲得圖像，然后對圖像進行拼接，來完成大幅面掃描工作。s performance parameters the development content and focuses of the work of largeformat scanner has been determined. The devices have been selected according to the parameters. Then we finished the scanner hardware circuit design and FPGA39。s hardware and software. The test results show that the design achieved the acquistion function and good performance. At the same time, the system achieved the expected acquisition speed and quality of the collected image. Keywords: Scanner, CCD, Manmachine interface, Multithread, Memory managementII ABSTRACT The MultiCCD scanners which are widely used in printing, scientific research, medical and other fields have important applications in opticalelectronicmachinery integration equipment. At present, with the rapid development a lot of industries need to archive large format materials. Therefore, the demand for largeformat scanner is increasing, while promoting the development and production of large format scanners. The main work of the largeformat scanner is to convert the analog signal to the digital signal which the puter can identify after converting the image39。s optical signal to the analog signal. In order to scan large format images, an effective approach is to capture images through multiple sensors, then splice the image to plete the largeformat scanner39。s timing design including the driver and configuration of the digitaltoanalog conversion chip. This is the important factor to the image quality. Converting the optical signal to the analog signal laid a foundation to enhance image quality which is the key to largeformat scanning. The second part is about the upper software system development. About this the paper introduced the demand, the division of the functional modules of the software and the threetier structure of the largeformat scanner software system firstly. Then the paper detailed the scanning interface design and implementation, focused on the design ideas of the multithreaded parallel data acquisition and memory management strategy to deal with the large amount of image data. This content is directly related to the focus of the user application experience of the largeformat scanner, also is the the focal point to theIV 目 錄 第一章 引言 .................................................................................................................. 1 課題的來源及其意義 .......................................................................................... 1 國內(nèi)外發(fā)展現(xiàn)狀及趨勢 ...................................................................................... 1 研究的主要內(nèi)容 .................................................................................................. 2 論文的組織結(jié)構(gòu)及章節(jié)安排 .............................................................................. 2 本章小結(jié) .............................................................................................................. 3 第二章 多 CCD 掃描儀概述 ....................................................................................... 4 掃描儀的原理 ...................................................................................................... 4 圖像采集系統(tǒng) ...................................................................................................... 5 圖像采集卡 ..................................................................................................... 5 CCD 的圖像采集軟件系統(tǒng)的設(shè)計與實現(xiàn) _碩士學(xué)位論文 CCD 的圖像采集軟件系統(tǒng)的設(shè)計與實現(xiàn) _碩士學(xué)位論文 光源 ................................................................................................................. 5 光學(xué)系統(tǒng)對成像質(zhì)量的影響因