INGENIEUR
INGENIEUR
Figure 1 : The process of 3D point cloud reconstruction using photogrammetry : ( a ) Multiple images were captured from different angles , ( b ) images were registered and matched to each other to form a point cloud , whereby each point contains location ( co-ordinates X , Y , Z ) and colour ( R , G , B ) data , and ( c ) the point cloud was then filtered to leave only objects used in analysis . The scaling object is the planting medium ( blue rectangle with dashed line ) with a height of 2cm .
Figure 2 : The virtual height obtained from the 3D point cloud of the crops matched the real-world height of the physical plants ( R 2 > 0.9 , RMSE < 0.5 cm ).
Figure 3 : Using a 3D model of the papaya fruit to assist post-harvest handling . ( a ) The 3D model of papaya was reconstructed using a 3D scanner ( b and c ). The 3D model is exported into a finite element modelling software for mechanics analysis , whereby the effects of two loading orientations on papaya were investigated .
38 VOL 99 JULY - SEPTEMBER 2024