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題名 | 小波分解輔助影像紋理區之分塊=Textured Image Segmentation Based on Wavelet Decomposition |
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作者姓名(中文) | 江凱偉; 羅慶昌; | 書刊名 | 測量工程 |
卷期 | 39:3 1997.09[民86.09] |
頁次 | 頁35-50 |
分類號 | 440.98 |
關鍵詞 | 影像分塊; 小波分解; 多層解析度分析; 多頻道分塊演算法; Image segmentation; Wavelet decomposition; Multiresolution analysis; Multichannel segmentation algorithm; |
語文 | 中文(Chinese) |
中文摘要 | 影像中之區塊可藉由其所內含紋理資訊差異而達到分辨的目的,將遙測影像經由 影像處理技術作影像分塊,並與地理資訊系統資料庫中多邊形及其屬性資料作套疊分析,則 可以達成辨識地表覆蓋,並協助提高遙測影像分類精度。 本研究採用不對稱之 Daubechies 正交小波函數,以多層解析度分析式對影像進行小波分解 來萃取影像紋理特徵, 最後針對小波分解所得之特徵影像採用屬於多頻道分塊演算法之 ISODATA 群集偵測演算法來完成影像分塊,並藉由檢核影像評估分塊成果之精度。 |
英文摘要 | Regions in an image can be distinguished from the others based on the differences of their textures. If image segmentation techniques are used to process remote sensing images, we can integrate the segmentation result with polygon data and corresponding attribute data from the database of geographical information system, and overlay analysis is applied to help the recognization of land-cover, the classification result of remote sensing images can be improved also. We use a asymmetric Daubechies orthogonal wavelet function for wavelet decomposition to extract texture features from images by means of multiresolution analysis. After using wavelet decomposition to extract texture features from images, ISODATA clustering algorithm is used to accomplish image segmentation, which can be regarded as one of the multichannel segmentation algorithms. Finally, the accuracy of segmentation result is estimated by comparing with reference images. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。