發(fā)布時(shí)間：2018-04-04 08:16

  本文選題：激光碼光學(xué)識(shí)別　切入點(diǎn)：混合編程　出處：《浙江大學(xué)》2017年碩士論文

【摘要】：激光碼是一個(gè)無(wú)法擦除的永久性標(biāo)記,它是通過(guò)激光直接在物體表面瞬間氣化而行成的圖形、文字、數(shù)字等信息,可以通過(guò)肉眼直接識(shí)別,主要用于產(chǎn)品的防偽、信息查詢、流向追蹤等應(yīng)用場(chǎng)景。隨著圖像識(shí)別機(jī)器視覺(jué)、圖像信息采集等相關(guān)技術(shù)的發(fā)展,光學(xué)字符識(shí)別技術(shù)也已經(jīng)廣泛的應(yīng)用在各項(xiàng)信息采集系統(tǒng)中。在這樣的應(yīng)用背景下,通過(guò)光學(xué)識(shí)別技術(shù)來(lái)識(shí)別激光碼信息也成了圖像處理中的研究熱點(diǎn)之一。本文使用常用光學(xué)識(shí)別算法,在基于Android系統(tǒng)的移動(dòng)設(shè)備上實(shí)現(xiàn)了激光碼的光學(xué)識(shí)別軟件,論文的主要工作和取得成果如下:(1)分析了激光碼的圖像的一般光學(xué)特性,基于一般的光學(xué)識(shí)別算法流程以及Android平臺(tái)的特點(diǎn)設(shè)計(jì)了系統(tǒng)架構(gòu)。并通過(guò)對(duì)比的形式設(shè)計(jì)了與之對(duì)應(yīng)的激光碼光學(xué)識(shí)別算法流程。(2)根據(jù)應(yīng)用場(chǎng)景需求,分析了軟件的功能模塊,將軟件應(yīng)用分為登錄與數(shù)據(jù)同步、圖像采集、圖像處理三大模塊。登錄與數(shù)據(jù)同步負(fù)責(zé)同步用戶的圖像處理結(jié)果;圖像采集模塊負(fù)責(zé)采集含有字符信息的圖像;圖像處理模塊負(fù)責(zé)將含有字符信息的圖像進(jìn)行數(shù)字圖像處理,并返回最終的結(jié)果。(3)根據(jù)應(yīng)用的各個(gè)模塊,開發(fā)實(shí)現(xiàn)了整個(gè)應(yīng)用程序。在圖像處理模塊中采用混合編程的方案,提高了程序的處理效率與實(shí)時(shí)性。(4)對(duì)于Android應(yīng)用內(nèi)存少的場(chǎng)景,設(shè)計(jì)了優(yōu)化的解決方案,通過(guò)回收部分資源、開辟緩存等操作優(yōu)化內(nèi)存使用,同時(shí)采用多線程模式增加程序的內(nèi)存容量。(5)對(duì)軟件進(jìn)行測(cè)試與分析。通過(guò)測(cè)試用例分析應(yīng)用軟件的使用效果,并驗(yàn)證了整體方案的可行性。
[Abstract]:The laser code is a permanent mark that cannot be erased. It is a graph, text, number and other information that is directly vaporized on the surface of an object by laser, and can be directly recognized by the naked eye. It is mainly used for anti-counterfeiting and information inquiry of products.Flow tracking and other application scenarios.With the development of image recognition machine vision, image information acquisition and other related technologies, optical character recognition technology has been widely used in various information acquisition systems.In such an application background, the recognition of laser code information by optical recognition technology has become one of the research hotspots in image processing.In this paper, the optical recognition software of laser code is implemented on the mobile device based on Android system with the commonly used optical recognition algorithm. The main work and results of this paper are as follows: 1) the general optical properties of the image of the laser code are analyzed.Based on the general process of optical recognition algorithm and the characteristics of Android platform, the system architecture is designed.According to the requirement of the application scene, the function module of the software is analyzed. The software application is divided into three modules: login and data synchronization, image acquisition and image processing.Login and data synchronization is responsible for synchronizing the user's image processing results; the image acquisition module is responsible for collecting images containing character information; the image processing module is responsible for digital image processing of images containing character information.And return the final result. 3) according to the application of each module, the development and implementation of the whole application program.In the image processing module, the mixed programming scheme is adopted to improve the processing efficiency and real-time performance of the program. (4) for the scene with less memory in Android application, an optimized solution is designed, and some resources are recovered.At the same time, the multithread mode is used to increase the memory capacity of the program. (5) to test and analyze the software.The use effect of the application software is analyzed by test cases, and the feasibility of the whole scheme is verified.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP391.41;TP316

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