CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
发明人:
TATSUTA MINORU,立田 穣
申请号：
JP2012129528
公开号：
JP2013252096A
申请日:
2012.06.07
申请国别(地区):
JP
年份:
2013
代理人:
摘要：
PROBLEM TO BE SOLVED: To easily and accurately measure distribution of seaweed bed areas 6 in relation to a method for measuring seaweed bed distribution, an apparatus for measuring seaweed bed distribution, and a program for measuring seaweed bed distribution by combining image processing and echo sounding.SOLUTION: A first candidate area 2 of a seaweed bed is determined based on superiority of the g-component intensity of a pixel in an aerial color image of a measuring objective water aria, as well as a second candidate area 4 of a seaweed bed is determined based on a change in a measured depth z of water by sonic water depth detection carried out in the measuring objective water area, and by comparing the first candidate area 2 with the second candidate area 4, the coincident area of the both is estimated as a seaweed bed area 6. Also, the thick growth amount in the seaweed bed area 6 is estimated by finding an influence amount za by seaweeds based on the change of the measured water depth z, as well as finding correlation between the thick growth amounts of samples measured at a plurality of spots in the measuring objective water area and the influence amount za by the seaweeds.COPYRIGHT: (C)2014,JPO&INPIT【課題】藻場域6の分布を簡便且つ精確に測定する。【解決手段】測定対象水域の空撮カラー画像中の画素のg成分強度の優位性に基づいて第1の藻場候補領域2を決定すると共に、測定対象水域について行った音響水深探査の測定水深zの変化に基づいて第2の藻場候補領域4を決定し、第1の藻場候補領域2と第2の藻場候補領域4とを対比して両者の一致した領域を藻場域6と推定する。また、測定水深zの変化に基づき海藻による影響量zaを求めると共に、測定対象水域内の複数地点で測定されたサンプル繁茂量と海藻による影響量zaとの相関関係を求めて藻場域6の繁茂量を推定する。【選択図】図1
