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In-Field Corn Stalk Location Using Rapid Line-Scan Technique
Y. Shi, N. Wang
Ms.
Corn plant spacing and population information is important in assessing planter performance and making decisions on field operations. The objective in this study was to investigate the potential of using laser line-scan sensing technique to locate corn plant stalks on-the-go. A mobile test platform equipped with a commercial laser line scanner, an encoder, a DAQ card, a PC and a RGB camera was constructed. Data was collected for two 10m corn rows at their middle growth stages - V8 and V10 - in Lake Carl Blackwell Agronomy Farm of Oklahoma State University, and was processed later in lab with algorithms developed to recognize and locate stalks. A 4% of mean false negative error and a 29% of mean false positive error at growth stage V8, a 6.7% of mean false positive error and a 12.7% mean false positive error at growth stage V10 were achieved. The system setup and data processing algorithms in this study can be integrated into the variable-rate-spray system to help improving real-time, high spatial resolution variable rate application and increasing the nitrogen use efficiency.
Keyword: Corn, plant population, plant spacing, laser line scanner
Y. Shi    N. Wang    Sensor Application in Managing In-season Crop Variability    Poster    2012
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