Dough-Stage Maize (Zea mays L.) Ear Recognition Based on Multiscale Hierarchical Features and Multifeature Fusion

Table 1

Mean environmental parameters in experimental field.

Shooting period	7:00–8:30	10:00–11:30	12:00–13:30	15:00–16:30	18:00–19:30
Mean solar altitude (°)	27.34	54.68	56.98	32.38	0.04
Mean solar azimuth (°)	99.92	156.45	194.13	250.66	307.19
Light color temperature/K	7634	10255	16309	11076	2096
PM 2.5 (μg m^−3)	32	16	17	12	46

Notes. PM 2.5 designates the fine particulate matter that is less than 2.5 μm.