Free network solutions with the DLT method

✍ Scribed by Athanasios Dermanis

• Book ID: 103957178
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 535 KB
• Volume: 49
• Category: Article
• ISSN: 0924-2716
• DOI: 10.1016/0924-2716(94)90061-2

✦ Synopsis

Free network solutions with the DLT method

The photogrammetric inner constraints, which are used for the derivation of free network solutions in close-range applications, are derived for the case where the Direct Linear Transformation model is used in the adjustment of the observations. The derivation is based on the fact that the inner constraint matrix is the transpose of the matrix of the derivatives of the unknown parameters with respect to transformation parameters of the reference frame. This matrix of derivatives is derived directly by studying the variation of the DLT parameters caused by an infinitesimal change of the] reference frame. This is achieved from the known corresponding variation of the bundle parameters and the known direct and inverse relations between DLT and bundle parameters.