This study aims at improving the sensing efficiency of field information by reducing the number of required images. Single whole field image by tilted image sensor is the best method. The possibility of image acquisition by changing the tilt angle of sensor was therefore investigated. The acquired images were transformed to ground coordinates with a projective transformation. Then, the wheat logging map was generated as one of crop growth maps.
The results suggested that the adopted projective transformation using four corner points on the field was effective for geometrical transformation. It was concluded that the wheat logging map generated by the discriminate function highly coincided with the actual wheat logging situation.