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- W4306708253 abstract "In the agriculture sector, multispectral camera near-ground observations are currently in demand. Altum multispectral camera is a new type of agricultural multispectral camera, which can be installed on ground observation equipment to obtain near-ground remote sensing images with high resolution and multispectral information. However, the optical system of the Altum camera adopts a multi-lens beam splitting design, and the channel registration problem used near-ground remains to be solved. Therefore, a near-ground image registration method is proposed based on a combination of a channel transformation model and a mapping relationship of the homologous image points. The way first corrects the internal lens parameters using the distortion coefficient of each lens. It then constructs a channel transformation model in the pixel coordinate system based on the transformation relationship between the camera coordinate system and the pixel coordinate system. The following calculates the transformation parameters from the corrected internal parameters and the relative position parameters between the lenses to complete the channel transformation. Finally, the homography model is estimated according to the mapping relationship of the homologous image points to perform inter-channel fine registration. The results show that the error in each band after registration is less than 0.5 pixels when the observation distance is greater than 7 metres. The method can offer a pre-processing service for channel registration for the Altum multispectral camera near-ground applications." @default.
- W4306708253 created "2022-10-19" @default.
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- W4306708253 date "2022-10-18" @default.
- W4306708253 modified "2023-09-27" @default.
- W4306708253 title "Altum agricultural multispectral camera near-ground channel registration method" @default.
- W4306708253 doi "https://doi.org/10.1117/12.2657099" @default.
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