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基于Hessian矩陣和區(qū)域生長的脈絡(luò)膜血管自動檢測

2016-07-09 08:30:38邢琳張旭葉雨靜秦磊沙雨純朱偉芳石霏
軟件導(dǎo)刊 2016年6期

邢琳 張旭 葉雨靜 秦磊 沙雨純 朱偉芳 石霏

摘要:脈絡(luò)膜血管自動檢測在臨床上具有重要意義,可通過觀察分析脈絡(luò)膜血管的形態(tài)、厚度等信息對多種眼底疾病進行診斷。為輔助臨床診斷,提出了一種新的基于SD-OCT圖像的脈絡(luò)膜血管自動檢測方法。首先檢測出色素上皮層下邊界,確定感興趣區(qū)域(Volume of Interest,VOI),然后對圖像進行基于灰度線性變換的增強以及三維塊匹配濾波等預(yù)處理,隨后采用Hessian矩陣對血管進行初步提取,提取結(jié)果作為目標(biāo)區(qū)域的種子點,進一步用三維區(qū)域生長方法檢測完整的血管區(qū)域,并通過形狀信息排除誤檢以及形態(tài)學(xué)濾波對檢測結(jié)果進行后處理。測試結(jié)果表明,該方法是一種有效的脈絡(luò)膜血管自動檢測方法。

關(guān)鍵詞:脈絡(luò)膜血管;Hessian矩陣;區(qū)域生長;三維塊匹配濾波

DOIDOI:10.11907/rjdk.161164

中圖分類號:TP319文獻標(biāo)識碼:A文章編號:1672-7800(2016)006-0132-05

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