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題 名 | 影像辨識計算金瓜寮溪魚類數目之研究=Using Pattern Recognition in Counting Fish Numbers in Jin-Gua-Liao River |
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作 者 | 張文亮; 蕭友晉; 虞淨卉; | 書刊名 | 農業工程學報 |
卷 期 | 56:1 2010.03[民99.03] |
頁 次 | 頁52-60 |
分類號 | 351.81 |
關鍵詞 | 影像辨識; 生物監測; Image processing; Ecological monitoring; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以台北縣金瓜寮溪爲試驗場址,計算水域中魚類數量,調查其水文水質等物理化學因子,藉由影像辨識技術的觀察評估魚群數目,探討魚隻數量的估算受水質水文之影響。研究結果發現,在五個採樣點中,魚隻的數量變化隨著水溫升高以及溶氧的降低而下降。山於採樣點流速都在亞臨界流範圍,因此魚隻數量與流速並無明顯相關性,然而影像辨識的正確率隨著採樣點的流速增加而漸漸降低,正確率依序爲:50.40%、61.50%、50.80%、50.40%及48.40%。金瓜寮溪的水文水質狀況幾乎沒有明顯變化,而魚類魚通量(單位時間單位體積魚隻數量)變化卻在水域中呈現不規則的數量變化,數據依序爲:0.482隻/秒.立方公尺、0.850隻/秒.立方公尺、1.586隻/秒.立方公尺、4.023隻/秒.立方公尺及2.155隻/秒.立方公尺。 |
英文摘要 | The experiment counts the fish number by using the image process technology and investigates the water quality, physical factors and chemical factors, in the nature river in Jin-Gua-Liao in Taipei County. The experiment discusses the relationship between the fish number and the water quality. The experiment result shows that, in the five sampling spots, the fish numbers decreased with the water temperature increased or the Dissolved Oxygen (DO) decreased. The velocity in the five spots are all below the range of Sub-critical Flow, so the fish number do not have significant relationship with the velocity in this experiment. However, the accuracy of the image recognition system decreased when the velocity increased as follows: 50.40%. 61.50%, 50.80%. 50.40% and 48.40%. There is no significant change of the water quality in different places of the river. However, the fish numbers n different places are irregular. The results are: 0.482 fish/sec.m³, 0.850 fish/sec.m³, 1.586/fish/sec.m³, 4.023 fish/sec.m³ and 2.155 fish/sec.m³. |
本系統中英文摘要資訊取自各篇刊載內容。