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Stitching Algorithm for Overlapping Images
重叠图象拼接算法

Zhong Li,HU Xiaofeng,
钟力
,胡晓峰

中国图象图形学报 , 1998,
Abstract: 全景视频是一种利用360度全景图象建立虚拟环境的新方法。全景图象是通过将普通照相机拍照到的边界部分重叠的图象进行拼接而创建的。本文利用图象重叠部分对应像素的相似性,提出了一种行之有效的拼接算法,使得到的图象无缝平滑。
IMAGE STITCHING USING MATLAB
Tejasha Patil, Shweta Mishra ,Poorva Chaudhari , Shalaka Khandale
International Journal of Engineering Trends and Technology , 2013,
Abstract: Images are an integral part of our daily lives. Image stitching is the process performed to generate one panoramic image from a series of smaller, overlapping images. Stitched images are used in applications such as interactive panoramic viewing of images, architectural walk-through, multi-node movies and other applications associated with modeling the 3D environment using images acquired from the real world.Image processing is any form of signal processing for which the input is an image, such as a photograph or video frame; the output of image processing may be either an image or, a set of characteristics or parameters related to the image. Most image processingtechniques involve treating the image as a two-dimensional signal and applying standard signal processing techniques to it. Specifically, image stitching presents different stages torender two or more overlapping images into a seamless stitched image, from the detection of features to blending in a final image. In this process, Scale Invariant Feature Transform (SIFT) algorithm[1] can be applied to perform the detection and matching control points step, due to its good properties. The process of create an automatic and effective whole stitching process leads to analyze different methods of the stitching stages. Several commercial and online software tools are available to perform the stitching process, offering diverse options in different situations.
Minimizing Seam Artifacts in Image Stitching
C.V. Veena
Asian Journal of Information Technology , 2012,
Abstract: A specialized form of image mosaicing known as image stitching has become increasingly common, especially in the making of panoramic images. The stitching quality is measured visually by the similarity of the stitched image to each of the input images and by the visibility of the seam between the stitched images. In order to define and get the best possible stitching, first of all noise is removed from the input images which is done as a preprocessing step and also there are several formal cost functions for the evaluation of the stitching quality. In these cost functions the similarity to the input images and the visibility of the seam are defined in the gradient domain, minimizing the disturbing edges along the seam. A good image stitching will overcome both photometric inconsistencies and geometric misalignments between the stitched images. This approach is demonstrated in various applications including generation of panoramic images, object insertion and stitching of object parts.
Stitching pairs of Levy processes into harnesses  [PDF]
Wlodek Bryc,Jacek Wesolowski
Mathematics , 2011,
Abstract: We consider natural exponential families of Levy processes with randomized parameter. Such processes are Markov, and under suitable assumptions, pairs of such processes with shared randomization can be stitched together into a single harness. The stitching consists of deterministic reparametrization of the time for both processes, so that they run on adjacent time intervals, and of the choice of the appropriate law at the boundary. Processes in the Levy-Meixner class have an additional property that they are quadratic harnesses, and in this case stitching constructions produce quadratic harnesses.
宋代应策时文概论  [PDF]
诸葛忆兵
- , 2016,
Abstract: 宋代应策时文最早出现在制科考试中,熙宁三年进士殿试,首次采用制策问答的方式考试,此后,殿试以策取士,大致沿袭不变。熙宁以后,士人逐渐将更多的学习热情转移到策问的写作上。殿试制策,考核士人两个方面的能力:对现实政治弊病的了解和应对方案,综合分析、归纳等逻辑思考能力和语言表达能力。宋代士人必须时时联系现实政治思考问题,他们进入仕途后,热衷于变革,时而大胆批评朝政,直抒己见,这与应策考试的训练有一定的关系。从格式角度考察,制策需要考核考生对现实社会和政治的多方面综合思考的能力,一道制策中总是提出多个问题。所以,应策时文事实上是由多篇政论文组成,与平常一题一议的政论文不同。应策时文受题目、时间、地点的限定,又有考试录取的现实目的,考生为了进入仕途,必须揣摩帝王或当政者的想法,以此作为应策时文的主要论点,贯穿全文。更有甚者,恶意攻击当时政坛上受排挤压迫的政治派别,应策时文遂堕落为朝廷鹰犬。此外,考生有个人经历的局限,回答问题时又有诸多功名利禄的考虑,面对现实政治和制策提问,绝大多数应策时文不可能提供深刻的见解,空疏肤浅是应策时文的通病。
Abstract:The stratagem and suggestion writing first appeared in the zhike examination (a special imperial examination in the Song Dynasty). In the palace examination in 1070, the text took a form of policy-making questionnaire. Afterwards, this kind of examination was regularized and inherited through dynasties. Thus scholars gradually devoted more efforts into stratagem and suggestion writing. In palace examination, two capacities were considered important: knowledge of political ills and corresponding policies, comprehensive analysis and expression ability. Song scholars, who were requested to consider problems with the context of real politics, were keen to make changes and bold in criticizing the government, which could be partly related to the training before examination. From the perspective of the format, the system needed to assess the candidates of comprehensive thinking on social and political dimensions, and usually had several questions under one subject. Therefore, the answering sheet was actually composed of a few pieces of article, different from the one-question-one-answering sheet. As the policy essays were limited by subject, time and place, with practical purposes in addition, most candidates tried to cater for the rulers in praise of the current politics. They would figure out the real thought of authority and took it as the main argument of the essay. Some of them went so far in malicious attacks against the groups in disadvantage. Limited by personal experiences and consideration on fame and fortune, most policy essays could not provide insightful opinions. Shallow emptiness was the common defect
Panoramic Images Automatically Stitching Algorithm Introduction  [cached]
Shangchen Liu,Dakun Zhang
Computer and Information Science , 2009, DOI: 10.5539/cis.v1n4p179
Abstract: The panorama is more effective image-based rendering one of the methods. Papers on the panorama generation process, and key technologies on one of the most panoramic picture of the stitching algorithm is classified, summarize and compare.
周代策命的礼仪背景及文体特点  [PDF]
董芬芬
- , 2013,
Abstract: 周代策命是周天子策封赏赐诸侯或臣下的仪式上使用的实用文体,一般在太庙举行策命仪式时颁布,见证者为傧者,宣读者多为内史,有时是尹氏或其他史官。周代策命形成稳定的体制,通常包括封赏的原因、具体的赏赐及教导与勉励三部分。周代策命语言诚挚恳切,语气温润亲切,典雅舒缓,成为后世策命文体模仿的典范。
附加约束条件的光束法区域网平差在四拼数码航空相机平台检校中的应用  [PDF]
徐斌,李英成,刘晓龙,朱祥娥,齐艳青
测绘学报 , 2014,
Abstract: 介绍了针对四拼数码航空相机的附加约束条件光束法区域网平差原理,包括计算四拼相机外方位元素,并同时计算四台子相机的相对位置关系,获取四拼相机平台检校参数。实验结果表明采用这种方法计算出来的平台检校参数精度高,生成的虚拟影像拼接效果好,测图精度满足大中比例尺地形图规范要求。
Image Stitching Based on Line Matching
基于线匹配的图像拼接

ZHANG Xian-Quan,TANG Zhen-Jun,LU Jiang-Tao,
张显全
,唐振军,卢江涛

计算机科学 , 2005,
Abstract: An algorithm was proposed for the image stitching. It can establish the prime stitching line without special features given by man and stitch the images quickly and perfectly. The experimental results showed that it was effec- tive.
激光焊接对接拼缝测量的微景深方法  [PDF]
王平江,黄雅婷,齐江飞,彭芳瑜,李斌,唐小琦
中国图象图形学报 , 2012, DOI: 10.11834/jig.20120907
Abstract: 对于复杂微细、错边量小的激光焊接拼缝测量,现有的视觉传感器方法不能稳定、可靠地提取出拼缝的中心位置、拼缝宽度等信息。为此,提出了基于微景深的激光焊接对接拼缝测量方法,该方法采用高倍光学放大镜头、工业CCD(ChargeCoupledDevice)/CMOS(ComplementaryMetal-Oxide-SemiconductorTransistor)相机和LED(Light-EmittingDiode)外部照明装置,以光学成像光轴与被测表面法矢呈45°的方式,组成的对接拼缝的非接触测量系统,既解决了显微放大时景深很小、测量范围小的问题,又解决了狭窄拼缝高光学放大倍数拼缝检测的难题。实验结果表明,该系统可快速准确地提取出拼缝中心坐标、拼缝宽度以及拼缝局部表面法矢。拼缝宽度测量精度优于5μm,拼缝中心测量精度优于6μm,可识别的最小拼缝宽度为0.02mm,完全满足激光焊接对接狭窄拼缝的检测与自动跟踪的要求。
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