Basic Study for Estimation of Nitrogen Content of Rice Plants from Vegetation Cover Rate of Rice obtained by a Simple Image Measurement
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概要
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High quality rice production requires periodically collecting rice growth data to control the growth of rice. The height of plant, the number of stem and the color of leaf are well known parameters to indicate rice growth. Rice growth diagnosis method based on these parameters is used operationally, although collecting these parameters by field survey needs a lot of labor and time. A laborsaving method for rice growth diagnosis was proposed which was based on vegetation cover rate of rice. Vegetation cover rate of rice is calculated based on discriminating rice plant areas in a digital camera image that is photographed in nadir direction. In order to estimate nitrogen content of rice plants from vegetation cover rate of rice obtained by a simple image measurement, the relation between both was analyzed in this paper. As results of the analysis, the correlation coefficient of both was 0.93 and RMS was 0.69 g/m<SUP>2</SUP>.
- 社団法人 日本写真測量学会の論文
社団法人 日本写真測量学会 | 論文
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