CAJ | 학술논문

随着卫星遥感技术的日趋发展与成熟，利用卫星影像进行测绘生产也越来越重要。由于卫星影像与传统航空影像不同，当运用现有的测图相关技术手段将数字影像放大到像元级别以寻找控制点位时，受传感器随机分割生成的像元以及周围地物的影响，无法在一系列混合像元中准确进行控制点的定位和量测，增加了航测绘图产品的误差。为此，设计了一种用于数字摄影测量且不同于现有航测规范中所涉及的地面标志，并提出了基于该种标志的点位偏移量解算方法。该算法解决了在数字影像上寻找点位困难问题的同时提高了单点的定位精度。最后，通过GeoEye-1卫星立体像对的定位实验验证了该方法的实用性和准确性。
수착위성요감기술적일추발전여성숙，이용위성영상진행측회생산야월래월중요。유우위성영상여전통항공영상불동，당운용현유적측도상관기술수단장수자영상방대도상원급별이심조공제점위시，수전감기수궤분할생성적상원이급주위지물적영향，무법재일계렬혼합상원중준학진행공제점적정위화량측，증가료항측회도산품적오차。위차，설계료일충용우수자섭영측량차불동우현유항측규범중소섭급적지면표지，병제출료기우해충표지적점위편이량해산방법。해산법해결료재수자영상상심조점위곤난문제적동시제고료단점적정위정도。최후，통과GeoEye-1위성입체상대적정위실험험증료해방법적실용성화준학성。
With the development and matureness of the satellite remote sensing technology, the use of satellite images for mapping production has become more and more important. As satellite images and traditional aerial photographs are different, during the utilization of existing mapping techniques to enlarge the image to the pixel level to seek for control points, the exact pixel points and the point coordinates can’ t be found in a series of mixed pixels because of the division generated randomly by the sensor element and the influence of the surrounding surface features. As a result, the image can’ t be accurately measured at a point, which will cause aerial mapping error. Therefore, a new symbol used in digital photogrammetry is presented in this paper, which is different from the ones in relative standard, and an algorithm is put forward based on the grayness of pixels of this kind of symbol in the digital image, which can find points and simultaneously improve the single point positioning accuracy. Finally, with a GeoEye-1 stereo pair through the actual encryption work, the practicability and the accuracy of the method are verified.