Quantification method of radiation performance indexes of optical mapping camera

Abstract

The present invention discloses a quantification method of radiation performance indexes of an optical mapping camera. The quantification method comprises the following steps of (1) based on least square image matching, deriving and obtaining camera radiation performance indexes influencing mapping precision; (2) based on the step (1), analyzing the influence rule of each index on the mapping matching precision; (3) for the purpose of achieving decorrelation decoupling of the camera radiation indexes and scene information, proposing scene information characterization parameters; (4) based on the step (2) and step (3), constructing an association model between the camera radiation indexes and the mapping precision; and (5) combined with the model constructed in the step (4), proposing a camera radiation index quantification method. According to the method, the association model between the camera radiation indexes and the mapping precision is established, and the model can be used for providing theoretical direction and technical support for quantification and optimal design of mapping camera radiation performance indexes and performance prediction.

Description

technical field [0001] The invention belongs to the field of aerospace optical surveying and mapping, and relates to a method for quantifying the radiation performance index of a surveying and mapping camera, in particular to a method for quantifying the radiation performance index of a surveying and mapping camera based on least squares matching, which is suitable for guiding the reasonable quantification and optimal design of the surveying and mapping camera index . Background technique [0002] Aerospace surveying and mapping provides basic data for the acquisition and update of global geospatial information, and high-precision aerospace surveying and mapping can provide an important guarantee for the improvement of the effectiveness of precision strike weapons and equipment. Aerospace optical surveying and mapping is widely used in the field of aerospace surveying and mapping due to its high-resolution and high-precision characteristics. Its realization method is to shoo...

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Problems solved by technology

[0004] Aiming at the lack of theoretical basis for presenting and quantifying radiation performance indicators of surveying and mapping cameras, the present invention proposes a quantification method for radiation performance indicators of surveying and mapping cameras, and obtains the radiation performance of cameras that affect high-precision surveying and mapping through theoretical derivation of least squares matching In view of the complex nonlinear relationship between these indicators and matching accuracy and the coupling problem with the imaging scene, the matching error modeling problem is converted into the optimization problem of nonlinear approximation function, and the wavelet network based on genetic algorithm parameter optimization is used to construct The relationship model between indicators and matching accuracy, using this model can provide a theoretical basis for the quantification and optimal design of radiation performance indicators of surveying and mapping cameras and performance prediction

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