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題 名 | Morphology De-ringing Filter Design for Ultrasound Images=去除超音波影像水波效應的形態學濾波器設計 |
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作 者 | 陳彥佑; | 書刊名 | 中州學報 |
卷 期 | 19 2004.06[民93.06] |
頁 次 | 頁329-344 |
分類號 | 448.533 |
關鍵詞 | 四分數分解; 水波效應; 形態學濾波器; Quad-tree decomposition; Ringing artifacts; Morphological filter; |
語 文 | 英文(English) |
中文摘要 | 這篇論文提出一個利用四分數分解和形態學濾波器來去除水波效應的超音波醫學影像壓縮演算法。首先,影像經過四分數分解後,再利用八個預先定義好的形態濾波器來改善重建影像,配合投票法則,每一個影像方塊可以選出最合適的形態濾波器。實驗結果顯示在同樣的位元率下,利用此演算法壓縮超音波醫學影像的訊號雜訊比與視覺效果均比JPEG 2000好。 |
英文摘要 | This study presents quad-tree decomposition and a set of morphological filters for reducing the ringing artifacts of ultrasound images. Specifically, the presented morphological filters use eight predefined morphological operations, including four structuring elements (SE) that include both dilation and erosion. The proposed voting strategy can be used to select the morphological filter for each block to optimize decoded image quality. Image quality can be enhanced by applying the appropriate morphological filter to each block. Experimental results demonstrate that the proposed technique enhances reconstructed ultrasound image quality compared to JPEG2000 at the same bit rate in terms of both PSNR and the perceptual results. |
本系統中英文摘要資訊取自各篇刊載內容。