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orthrectification without rpc


kdomain

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Hi all, please assist with orthorectification. Is it possible to orthorectify images without the rational polynomial coefficients (RPC). I have satellite  images and they only have .aux , .rrd & .tiff files. Been trying to rectify with erdas but they are not getting rectified properly onto the reference image. Is there any technique i can use . Thank you.

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you must built your own RPC from GCP using ENVI, ERDAS, PCI Geomatica and few others image processing software, . Keep in mind that the accuracy of derived RPC heavily relied on your GCP number, accuracy and distribution. If you are using GeoEYE imagery at <0.5 meter resolution, basically you need GCPs derived from Geodetic GNSS survey (static/kinematic)  which has accuracy <10 cm. 

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