粒子群优化Canny算子在高精度接触角测量中的应用研究

目前高精度接触角测量过程中对边界提取的效果越发严格. 针对接触角测量中边界提取对图像边界细微 之处提取不清晰，存在断点的问题，文中提出一种以Canny算子边缘检测为基础，结合粒子群算法的边缘检测 技术. 利用粒子群算法的叠代计算的优化特点，通过计算机叠代搜寻用于Canny算子中的最佳双阈值. 通过融 合后的边缘检测方法用于高精度接触角测量中，准确提取液滴边界从而提高测量精度. 理论研究和实验结果表 明，PSO优化Canny算子能够准确的检测液滴图像的边界轮廓，同时具有一定的抑制噪声作用.
Intheprocessofhighprecisioncontactanglemeasurement,theeffectofboundaryextractionismorestrin? gent.Aimingattheproblemthatboundaryextractiondoesnotcleartheboundaryoftheimageboundaryandthereisa breakpointinthecontactanglemeasurement,anewedgedetectiontechnologybasedonCannyoperatoredgedetection andparticleswarmoptimizationisproposed.ByusingtheoptimizationcharacteristicsofthePSO,thebestdoublethresh? oldusedintheCannyoperatorissearchedthroughthecomputersuperposition.Theedgedetectionmethodafterfusionis usedinhighprecisioncontactanglemeasurement,whichcanaccuratelyextractthedropletboundaryandimprovethe measurementaccuracy.ThetheoreticalandexperimentalresultsshowthatPSOoptimizestheCannyoperatorcanaccu? ratelydetecttheboundarycontourofthedropletimage,andalsohasacertaineffectonnoisesuppression.