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Combination of distance data with high resolution images
Vision Fusion Camera Scanner DEM/DTM Orthorectification
2015/8/25
Typical devices for acquiring distance data are laser scanners. Combining these with higher resolution image data is state of the art.Recently, camera systems are available providing distance and imag...
AUTOMATED UPDATE OF ROAD DATABASES USING AERIAL IMAGERY AND ROAD CONSTRUCTION DATA
Change Detection Database GIS Imagery
2015/5/18
The update of geodata is an important task in order to ensure a high level of data quality in Geographic Information Systems (GIS).
Today, this work is carried out mostly manually by an operator, who...
Data Matrix二维条形码解码器图像预处理研究
Data Matrix 图像预处理 定位
2009/12/10
DM码是一种常见的二维条形码，图像预处理是DM码解码器自动识别过程中的重要步骤。提出一种实用的DM码识别图像预处理方法。它没有使用传统的边缘检测和直线检测手段，因此受背景噪声、几何失真的影响较小。此外，使用了校正铁路线坐标，并按区域取样生成码流，显著提高了DM码的识别速度和识别率。实验结果表明，该算法可以克服DM码识别过程中易受噪声干扰、光照不均和几何失真等影响的问题。
