A Method for Calculating the Area of Zostera marina Leaves from Digital Images with Noise Induced by Humidity Content

Table 1

Different symbols used in the digital image processing method.

Symbol	Description
𝑙	Leaf length
ℎ	Leaf width
𝐶max	Number of colors in a format of a digital image
ST(𝑥)=[0,𝑥]	Interval of Tolerance of Similarity
𝑙max	Maximum observed leaf length
𝑙𝑞=^max𝑛	Norm of the partition for the interval 0,𝑙max
𝐼𝑘	Partition interval of the form [𝑞(𝑘−1),𝑞𝑘) for 0≤𝑘≤𝑛
𝑃^𝑙max0=⋃^𝑛1𝐼𝑘	Collection of 𝑛 intervals 𝐼𝑘 that cover 0,𝑙max
𝐺𝑘(𝑙)	Group of leaves whose lenghts (𝑙) lie in 𝐼𝑘
𝑛𝑘	Number of leaves in the group 𝐺𝑘(𝑙)
𝐶𝐺=⋃^𝑛1𝐺𝑘(𝑙)	Collection of all groups 𝐺𝑘(𝑙) of leaves