共查询到19条相似文献,搜索用时 125 毫秒
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TWAIN协议是静态图像系统中图像获取设备与应用程序间的通信接口。文中结合佛山汇星阪田电子公司的e-Boat系列数码相机的开发,对数码相机图像采集TWAIN接口进行了分析。介绍了数码相机图像采集TWAIN接口的体系结构和工作机制,提出了TWAIN驱动程序的框架,通过Visual C .Net编写程序在数码相机SDK基础上实现了e-Boat300数码相机TWAIN驱动程序的设计和开发。试验证明,该框架能够很好地满足一般数码相机的TWAIN驱动设计要求。 相似文献
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TWAIN协议是静态图像系统中图像获取设备与应用程序间的通信接口.文中结合佛山汇星阪田电子公司的eBoat系列数码相机的开发,对数码相机图像采集TWAIN接口进行了分析.介绍了数码相机图像采集TWAIN接口的体系结构和工作机制,提出了TWAIN驱动程序的框架,通过VisualC .Net编写程序在数码相机SDK基础上实现了eBoat300数码相机TWAIN驱动程序的设计和开发.试验证明,该框架能够很好地满足一般数码相机的TWAIN驱动设计要求. 相似文献
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对数码相机取景图像进行场景的自动识别与归类是数码相机模式自动调整的核心问题之一。本文提出一种结合图像视觉特征与LDA(Latent Dirichlet Allocation)模型的取景图像自动识别算法:在图像类别训练中,以整个训练图像类的特征码作为训练对象,其中特征码包含图像的低层视觉特征,得到各类图像的LDA模型。在图像识别中,通过计算目标图在各类图像模型中的后验概率来判断该图所属类别。实验结果较好,说明此算法可用于对数码相机取景框图像场景识别。 相似文献
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本文通过对几种常用图像采集开发方法的分析比较,指出SDK开发方法的优越性。通过研究佳能数码相机的SDK技术,给出了使用数码相机SDK进行静态图像采集的开发方法,所给出的编程模型对开发其它种类的数码相机也具有参考价值。 相似文献
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基于矩形角点几何变换的畸变图像校正 总被引:2,自引:0,他引:2
吴柏雄 《计算机与数字工程》2009,37(11):152-154
在以数码相机等数字设备拍摄图像时,所拍摄的图像经常会产生各种各样的变形,这种变形可能会导致识别软件中的后续处理失败,从而使图像无法被识别。为了使普通的识别软件能够对数码相机等拍摄的图像进行识别,有必要对其进行校正。针对大部分畸变图像是倾斜变形和透视变形,采用类似倾斜变形图像的几何校正算法,分两步实现图像的校正。实验表明,该方法对于倾斜变形和透视变形有良好的校正效果,以便于后续的图像处理。 相似文献
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介绍WIA接口的体系结构和工作机制,及如何利用WIA应用程序接口实现图像应用程序与数码相机进行通讯的操作,并通过Visual C .NET编写程序在数码相机SDK基础上实现了图像应用软件WIA功能的设计和开发. 相似文献
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由于现今功能强大的图像编辑软件很容易就可以得到,所以对数字图像进行操作和编辑变得非常的容易,在一幅图像中添加或移掉一个重要的人或物并且不留任何痕迹是很有可能的。如果这些篡改图像用在媒体或法律上,对社会将造成很大的影响。随着数码相机和摄像机的不断普及,验证数字图像变得越来越重要了。文章利用数码相机的两个固有特性对图像进行篡改检测,对多幅图像进行操作,实验证明有不错的检测效果。 相似文献
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数码相机作为一种图像输入设备,在以图像为主要信息载体的互联网时代,具有广阔的应用前景。论文介绍了数码相机关键技术及发展水平,分析了目前数码相机的市场格局及前景,讨论了我国数码相机企业面临的技术差距,探讨了我国数码相机产业化的发展模式,提出了“硬件集成,软件开发”的发展思路。 相似文献
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Rapid advancement and widespread digital camera applications have made it possible to replace charge‐coupled device (CCD) cameras in automatic inspections for industrial applications. However, most digital camera applications using the automatic exposure mode may not be effective in some of the inspection environments. The reflection from a board surface in printed circuit board (PCB) inspections is one such problem area. The objective of this study is to develop a methodology to evaluate the effectiveness of using digital cameras for inspection. The indices used for evaluating digital camera image quality are the perceived image quality, the visual resolution, and the noise. An experiment was designed and conducted to determine the optimal camera parameter combination for attaining the best image quality. The desirability function was used to compare various digital camera parameter settings in considering three image quality indices for selecting the best camera‐operating conditions. Based on the developed model and the subjective image quality index, the overall image quality improved 9.4% and 13.86%, respectively. The developed methodology can be used to: (a) determine the digital camera image quality, (b) provide an improved model for determining the automatic exposure setting for digital camera designers, and (c) adjust the digital camera parameters for automatic inspection. © 2008 Wiley Periodicals, Inc. 相似文献
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数字水印数码相机的问世引起了数码相机业的一场轰动,同时也拓宽了数码照片的用途。然而,数字水印相机作用的发挥又依赖于所使用的水印算法。阐述了数字水印数码相机的特点和数字水印技术在此种相机中的应用过程,并提出了一种新的图像水印算法,实验结果证明了这种算法的有效性和可行性。 相似文献
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《Information Fusion》2001,2(2):135-149
In this paper, some image registration algorithms are investigated for the purpose of image fusion in a digital camera application. A hybrid scheme which uses both feature-based and intensity-based methods is proposed. In particular, an edge-based image registration approach is developed to guide the intensity-based registration which uses optical flow estimation. The idea of coarse-to-fine multi-scale iterative refinement is also utilized. The combination of these different methods tends to compensate for any deficiencies in the individual methods. Experiments show that our approach provides accurate registrations for the digital camera application. It is also demonstrated that the approach proves useful for registering some multi-spectral images. 相似文献
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Longin Jan Latecki Christopher Conrad Ari Gross 《Journal of Mathematical Imaging and Vision》1998,8(2):131-159
The main task of digital image processing is to recognize properties of real objects based on their digital images. These images are obtained by some sampling device, like a CCD camera, and represented as finite sets of points that are assigned some value in a gray-level or color scale. Based on technical properties of sampling devices, these points are usually assumed to form a square grid and are modeled as finite subsets of Z2. Therefore, a fundamental question in digital image processing is which features in the digital image correspond, under certain conditions, to properties of the underlying objects. In practical applications this question is mostly answered by visually judging the obtained digital images. In this paper we present a comprehensive answer to this question with respect to topological properties. In particular, we derive conditions relating properties of real objects to the grid size of the sampling device which guarantee that a real object and its digital image are topologically equivalent. These conditions also imply that two digital images of a given object are topologically equivalent. This means, for example, that shifting or rotating an object or the camera cannot lead to topologically different images, i.e., topological properties of obtained digital images are invariant under shifting and rotation. 相似文献
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航空遥感CCD数字图像应用潜力分析 总被引:1,自引:0,他引:1
简要介绍了CCD数字线扫描相机的工作原理,侧重于它与传统光学摄影航空相机的比较,包括:(1)投资,即仅器本身及记录设备与介质;(2)结构差异从而导致体积、重量及使用寿命的不同;(3)图像质量,包括空间分辫率、几何精度、光谱响应;(4)运行操作,包括存储记录、处理手段、推广应用可行性、时效性、运行环境、检索及维护等。通过比较充分显示了CCD数字扫描相机的巨大应用潜力。 相似文献
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Zhou Yang Liu Kai Dou Qingyu Liu Zitao Jeon Gwanggil Yang Xiaomin 《Multimedia Tools and Applications》2022,81(16):22335-22353
Multimedia Tools and Applications - Due to limitations of the optical lenses, using the digital single-lens camera to obtain an all-in-focus image is difficult. In order to overcome this... 相似文献