J. Eur. Opt. Society-Rapid Publ. 22, 32( 2026) 327
Figure
2. The temperature distribution of the four seasons in the port.( a) Spring.( b) Summer.( c) Autumn.( d) Winter.
Figure 3. The supervised classification process.
Coefficient is 0.9211, which is greater than 0.8, indicating that the land cover classification is accurate.
2.3 Modeling of port background BRDF
Based on the above classification results, bidirectional reflection models can be established for land and sea surfaces respectively. Sea water surface reflection is calculated using the Cox-Munk model, taking into account the effects of wind speed, wind direction, and obstruction. The bidirectional reflection function of the sea surface [ 18 ] is expressed as: BRDF sea ð h i; u i; h r; u r
Þ ¼ pPz ð u; z v Þqx ð Þ 4 cos h r cos 4 b ð7Þ
where P( z u, z v) is the probability distribution of sea surface slope; ρ( ω) is the sea surface reflectivity, calculated