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題名 | 植基於VQ編碼指標與色彩質心空間特徵之影像檢索系統=Image Retrieval Systems Based on VQ Code Index and Color-Mass-Center Spatial Feature |
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作者 | 孫振東; 陳俊榮; 吳怡憬; Sun, J. D.; Chen, C. J.; Wu, Y. J.; |
期刊 | 華岡工程學報 |
出版日期 | 20040600 |
卷期 | 18 2004.06[民93.06] |
頁次 | 頁117-122 |
分類號 | 312.1 |
語文 | chi |
關鍵詞 | 影像檢索; 向量量化; 植基於色彩的影像檢索; 色彩長方圖; 色彩質心; Image retrieval; VQ; Color-based image retrieval; Color histogram; Color mass center; |
中文摘要 | 影像資訊檢索在許多應用上扮演重要角色,諸如衛星影像資料庫、地理資訊系統、診斷醫學影像資料庫、及商業商標資料庫,因此,發展一可靠有效果的影像檢索系統是非常重要。本論文提出一個基於影像向量量化(VQ)指標與色彩質心空間位置的影像檢索系統,VQ是將原影像色彩長方圖再量化成低解析度,資料庫內影像根VQ編碼指標分成多個群組,本系統利用四個色彩質心的相對位置來描述一個影像的色彩空間分布特徵。一個像素的質量即是它的色彩灰階,我們將一個影像分成四個象限,每個象限有一個色彩質心,利用四個色彩質心彼此之間的歐基里得距離作為搜尋影像的索引,實驗結果顯示此方法的影像辨識能力受影像的平移、翻轉、旋轉、及縮放等變化的影響不明顯。 |
英文摘要 | Image information retrieval plays a significant role in many application areas, such as satellite image databases, geographic information systems, diagnostic medical image databases, and commercial logo databases. Hence, developing an effective and efficient image retrieval system is very important. This paper proposed an image retrieval system based on the VQ (vector quantization) index and spatial locations of color-mass-center in images. VQ is used to construct a lower-resolution version of the original color histograms of images. The images in the database are divided into clusters based on VQ code index. This system describes the color-spatial feature of an image using the relative location of four color-mass-centers. The color-mass of a pixel is defined by the gray level of the pixel. We divided an image into four color-mass-centers. The Euclidean distances between each pair of four color-mass-center are the indexing key to search the image. Experimental results show that the recognition ability is insensitive to the shift, rotation, and scale variants of images. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。