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題 名 | 電腦影像處理在樹輪辨識上的應用=Application of Computerized Image System on Tree-ring Measurement |
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作 者 | 鍾智昕; 林世宗; 吳四印; | 書刊名 | 宜蘭大學生物資源學刊 |
卷 期 | 3:1 民95.12 |
頁 次 | 頁33-41 |
分類號 | 436.181 |
關鍵詞 | 樹輪學; 影像分析; 樹輪辨識系統; Dendrochronology; Image analysis; Tree-ring measurement; |
語 文 | 中文(Chinese) |
中文摘要 | 藉由影像處理技術,擷取林木圓盤中樹輪的灰階值資訊,在轉換為各種的樹輪特徵值,用以建構林木生長歷史及分析其變動之效應,可提供森林資源永續經營的重要資訊,本研究嘗試建立簡易可行的樹輪辨識系統,系統架構包括基本參數建立、試材影像處理的輸入功能,樹輪影像數位化分析辨識的轉換功能以及分析結果彙整、顯示的輸出功能。本文係針對數化分析辨識的轉換功能,以電腦影像處理軟體配合Visual Basic程式編輯工具,建立電腦化的樹輪辨識技術,作為發展具實用性且功能完整之樹輪辨識系統的基礎。 本研究採用數種臺灣主要針葉樹造林木的圓盤作為試驗材料,發展出之辨識原型軟體與技術進行電腦影像分析法作為樹輪定年、年輪寬及春秋材識別及其變動等探討。研究結果顯示,樹輪的春秋材,可藉由影像分割的技術,使其邊界明顯化,以提高自動定年技術的正確率。心材的顏色與影像上的各種雜訊是影響自動定年技術的主要原因。樹齡及年輪寬度等資訊,可藉由辨識系統加以判讀。 由本研究中所發展程式化的電腦影像樹輪辨識技術,配合前級輸入及後級輸出功能的發展,作為森林經營及樹輪物候學的工具,在未來應具有進一步的研發空間與價值。 |
英文摘要 | Digitalized identification system that applied in tree-ring measurement can afford foret sustainable management information by rebuilting tree's history. A complete tree-ring measurement system should be include (1) input function that allows the analysis to setup a testing standard and calibrate the image acquisition devices (2) converse function to digitize and analyze the image, and (3) output function to display and backup the measurement information. This study focus on developing a program using Visual basic program for converse system to analyze the tree-ring image. By this pilot program, select Taiwan coniferous planting tree samples in terms of core and disc can be dated easily. In addition, annual ring width, earlywood and latewood information can be obtained as well. The study results show that (1) earlywood and latewood in tree-ring can be identified clearly (2) the boundary of sapwood and heartwood can be distinguished by adjusting the gray value standard, and (3) tree-ring measurement such as dating, annual ring width can be measured by this methods. The computerized tree-ring image identification system with database could be implement as an effective tool for forest resource management and tree-ring dendrochronology. |
本系統中英文摘要資訊取自各篇刊載內容。