基于数字正射影像图的美化技术研究

Research on Beautification Technology Based on Digital Orthophotography

为快速、准确地解决数字正射影像图中的影像色差、云影遮挡、道路桥梁错位、房屋扭曲、影像拉花、拼接线等问题,借助Photoshop图像处理软件提出了一种正射影像图的美化处理方法。该方法首先借助色彩互补理论对影像图进行色调、清晰度调整,然后通过修补、替换等方法将正射影像图中的云影、道路桥梁错位、房屋扭曲、影像拉花等各种“瑕疵”区域进行修补替换,进而完成影像图的美化处理。以高分专项黄河流域青海段生态保护和高质量发展应用产业化项目数字正射影像制作试生产中局部存在的纹理问题为例进行验证。结果表明,该方法处理的数字正射影像图快速提高了正射影像图的清晰度、对比度、美观度,为正射影像图上地物信息的美化处理提供了可借鉴、可推广的技术思路。

In order to efficiently address issues such as image color difference,cloud cover,misalignment of roads and bridges,distortion of buildings,image warping,and stitching lines in digital orthophoto images,a method for beautifying orthophoto images is proposed using Adobe Photoshop image processing software.It first adjusts the color tone and clarity of the images based on the color complement theory,and then repairs and replaces various“flawed”areas in the orthophoto images,such as clouds,misaligned roads and bridges,distorted buildings,and image warping,to complete the beautification process of the images.In the production trial of digital orthophoto images for the high-scoring special project of ecological protection and high-quality development industrialization in the Qinghai section of the Yellow River basin,the method is verified.The results show that this method can not only quickly improve the clarity,contrast,and aesthetics of the orthophoto images,but also provide a technical roadmap for reference and promotion in the beautification of geographical information on orthophoto images.