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随着计算机硬件、计算机软件及摄影测量技术持续发展，使得数字正射影像图的应用越来越广泛。正射影像图在城市的整体规划以及土地利用规划等领域变得十分重要。而且现在随着数字城市的不断发展，城市在进行航空摄影测量时，都要求制作出数字正射影像。4D产品也将随之不断的发展。由于数字正射影像图较矢量图形能更直观形象的表示地物地貌，其包含的信息量更大，更加丰富。详细介绍了如何利用InPho摄影测量系统来获取数字正射影像图，并对正射影像图的应用作了介绍。在制作过程中对成果的质量、精度和存在的问题及解决方案进行了分析。“,”Along with comPuter hardware,comPuter software and PhotograPhic measurement technol-ogy sustainable develoPment,making digital orthoPhoto maP used more widely. OrthoPhotos become very imPortant in the field of overall Planning and land use Planning and the like. And now with the continuous develoPment of digital city,when the city during the aerial PhotograPhy,are required to Produce digital orthoPhotos. 4D Products will continue to follow develoPments. Because digital or-thoPhoto maP vector graPhics can be more intuitive than the rePresentation of the image surface fea-tures landforms,the amount of information it contains larger,more abundant.