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Welcome Message CRV 2022 欢迎致辞CRV 2022
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 2022-05-01 DOI: 10.1109/crv55824.2022.00005
Hsiu-Chin Lin, Helge Rhodin
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引用次数: 0
A Bayesian Algorithm for Reading 1D Barcodes. 一维条码读取的贝叶斯算法。
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 2009-05-25 DOI: 10.1109/CRV.2009.31
Ender Tekin, James Coughlan

The 1D barcode is a ubiquitous labeling technology, with symbologies such as UPC used to label approximately 99% of all packaged goods in the US. It would be very convenient for consumers to be able to read these barcodes using portable cameras (e.g. mobile phones), but the limited quality and resolution of images taken by these cameras often make it difficult to read the barcodes accurately. We propose a Bayesian framework for reading 1D barcodes that models the shape and appearance of barcodes, allowing for geometric distortions and image noise, and exploiting the redundant information contained in the parity digit. An important feature of our framework is that it doesn't require that every barcode edge be detected in the image. Experiments on a publicly available dataset of barcode images explore the range of images that are readable, and comparisons with two commercial readers demonstrate the superior performance of our algorithm.

一维条形码是一种无处不在的标签技术，在美国，大约99%的包装商品都使用UPC等符号。如果消费者能够使用便携式相机(例如手机)读取这些条形码，这将是非常方便的，但是这些相机拍摄的图像质量和分辨率有限，通常很难准确读取条形码。我们提出了一个贝叶斯框架，用于读取一维条形码，该框架模拟条形码的形状和外观，允许几何扭曲和图像噪声，并利用奇偶位中包含的冗余信息。我们的框架的一个重要特点是，它不需要检测图像中的每个条形码边缘。在公开可用的条形码图像数据集上进行实验，探索可读图像的范围，并与两个商业阅读器进行比较，证明了我们的算法的优越性能。
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引用次数: 25
Rotation, Scaling, Translation Invariant Image Watermarking Based on Radon Transform 基于Radon变换的旋转、缩放、平移不变图像水印
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 2004-05-17 DOI: 10.1109/CCCRV.2004.1301448
Yan Liu, Jiying Zhao
Many image watermarking schemes against geometric attacks have been proposed. Rotation, scaling, translation (RST) invariant image watermarking based on log-polar mapping (LPM) and Radon transform is one of them. In this paper, we analyze the embedding and detection process of the above-mentioned method. We focus on how to select the watermark data, how to embed the watermark into the original image, and how to implement approximative inverse log-polar mapping (ILPM) during the embedding process. We analyze watermark detection when a watermarked image is scaled or rotated, and propose to use the rotation rectification to battle rotation. Three detection methods are compared.
针对几何攻击，已经提出了许多图像水印方案。基于对数极映射(LPM)和Radon变换的旋转、缩放、平移(RST)不变图像水印就是其中之一。在本文中，我们分析了上述方法的嵌入和检测过程。重点研究了如何选择水印数据，如何将水印嵌入到原始图像中，以及如何在嵌入过程中实现近似逆对数极映射(ILPM)。分析了水印图像缩放和旋转时的水印检测问题，提出了利用旋转校正对抗旋转的方法。对三种检测方法进行了比较。
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引用次数: 7
Extraction of Relief Information on Textured and Coloured Rough Surfaces for the Optimisation of a Propagation Model for Wireless Transmission 纹理和彩色粗糙表面起伏信息的提取及其无线传输传播模型的优化
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 2004-01-01 DOI: 10.1109/CCCRV.2004.1301464
A. Benslimane, M. Khoudeir, J. Brochard
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引用次数: 0
Evaluation of Model Independent Image-Based Visual Servoing 基于模型独立图像的视觉伺服系统评价
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 1900-01-01 DOI: 10.1109/CCCRV.2004.1301437
Zhenyuan Deng, Martin Jägersand
The camera-robot calibration requirements is visual servoing can make it difficult to apply in many real-world situations. One approach to image-based visual servoing without calibration is to dynamically estimate the full visual-motor Jacobian during motion. In this paper we contrast three commonly used estimation approaches, and compare errors in the estimates. Other work has reported endpoint positioning accuracy for uncalibrated visual servoing. We also show how varying estimates errors affect trajectory following. The experiments have been carried out on both real and simulated PUMA 560 and 760 robots.
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引用次数: 10
Invited Talks 邀请谈判
Proceedings. Canadian Conference on Computer and Robot Vision
Pub Date : 1900-01-01 DOI: 10.1109/CRV.2006.45
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引用次数: 0
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