Precision viticulture is precision farming applied to optimize vineyard performance, in particular maximizing grape yield and quality while minimizing environmental impacts and risk. This preliminary study seeks to determine the extent to which infra-red data from remote sensing can be used to determine decision relevant parameters for process control in viticulture. Drones which can acquire near infra-red and visible light pictures of the grapes were used to obtain information about the grapes prior to harvest. The data from these pictures was compared with measurements taken using the Juiceliner, a mobile grape juicing and measuring device. The measurements from the Juiceliner can be correlated with grape ripeness.