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Portfolios
卓諭
Interactive US-Image Segmentation
Interactive US-Image Segmentation
Interactive US-Image Segmentation
By
卓諭
AI/Computer Vision Engineer
・
Taipei City, Taiwan
Connect
基於 GrabCut 的交互式超聲波影像分割
為了簡化醫師標注病徵的步驟,為此開發以 Grabcut 為核心演算法的Segmentation標註工具。
如何標注出正確目標
於病徵/組織內側標註兩條線段
線不可跨出病徵/組織
起點終點皆於病徵邊緣
涵蓋盡可能多的顏色變化
線之間需相交
盡可能描述出 病徵/組織 形狀
若邊緣模糊或形狀變化大增加線條輔助
在邊緣模糊區域邊緣增加線段(線之間需相交)
在形狀變化轉折點增加線段(線之間需相交)
針對 Breast Ultrasound Images Dataset 隨機挑選 300 筆 US Images,『基於 GrabCut 的交互式超聲波影像分割』有以下優點,經過實驗可整合至標注工具平台,應用於實際場景。
即時運算
:每次平均運算時間為 0.28 s,達到即時需求。
準確度高
:透過使用者標註的線段,分別構成不同的 Mask (e.g. Foreground Mask, Probability Foreground Mask & Probability Background Mask),使 GrabCut 結果更加準確以及穩定。
穩定度高
:在目標邊緣明顯前提,不同使用者標注的線段誤差,對於分割結果的影響極小。
可微調分割結果
:GrabCut 彈性大,可透過增減標註線段來修飾分割結果。
為了簡化醫師標注病徵的步驟,為此開發以 Grabcut 為核心演算法的分割標註工具。 標注以線段構成,使用者只需遵照以下限制,即可得到快速穩定且準確的影像分割結果。 1. 線段起點及終點必須為『病徵邊緣』 2. 整條線段必須『完全於病徵內』 3. 病徵標注最少『2 條線段』 --- 2 條線段:病徵形狀規則 and 邊緣明顯 --- 多條線段:病徵形狀不規則 or 邊緣不明顯 4. 每條線段之間必須『互相交集』
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卓諭
Connect
Published: Nov 16th 2022
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