發明
中華民國
106116348
I 637351
影像處理方法及非暫態電腦可讀取記錄媒體
國立中正大學
2018/10/01
一種基於非等向性擴散之影像增強方法,包含提供一彩色原始影像,並將其分為一R通道、一G通道以及一B通道。接著,分別對R通道、G通道以及B通道進行一影像增強計算步驟,包含計算一影像區域的一八方向梯度變化,並依照八方向梯度變化決定以平滑函數或銳化函數進行擴散運算,其中擴散運算方程是基於邊緣機率密度函數提供,並將擴散運算方程進行迭代運算。結合運算後的R通道、G通道以及B通道產生一彩色結果影像,獲得一增強影像。 An image enhancing method based on an anisotropic diffusion includes the following steps. A color original image is provided, which is divided into a R channel, a G channel and a B channel. An image enhancement calculating step is processed in accordance with the R channel, the G channel and the B channel, wherein the image enhancement calculating step includes that an 8-direction gradient of an image area is calculated. A diffusion calculation which may be calculated based on a smooth function or a sharpened function is decided by the 8-direction gradient, wherein the diffusion calculating equation is based on a marginal probability density function. Then, the diffusion calculating equation is calculated according to an iteration method. The calculated R channel, G channel and B channel are combined into a color result image.
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