Roberts算子:G[i,i]=|f[i,j]-f[i+1,j+1]|+|f[i+1,j]-f[i,j+1]|;
Sobe算子:G[i,i]=|f[i-1,j+1]+2f[i,j+1]+f[i+1,j+1]-f[i-1,j-1]-2f[i,j-1]-f[i+1,j-1]| +|f[i-1,j-1]+2f[i-1,j]+f[i-1,j+1]-f[i+1,j-1]-2f[i+1,j]-f[i+1,j+1]|; 拉普拉斯算子:G[I,j]=|f[i+1,j]+f[i-1,j]+f(i,j+1)+f[i,j-1]-4f[i,j]|; 其中G[i,j]表示处理后(i,j)点的灰度值,f[i,j]表示处理前该点的灰度值。 |
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