共轭梯度平方法 conjugate gradient squared method
A new auto-focusing algorithm was proposed,and it adopted image squared-gradient function based on focus windows by comparing three favorable sharpness functions. Additionally,it presented mathematical model and experimental analysis and results.
通过分析比较3种聚焦效果较好的清晰度评价函数,提出了一种基于聚焦窗口模式的平方梯度函数作为聚焦评价函数,建立了评价函数的数学模型,并给出了实验分析和结果。
参考来源 - 一种新的图像清晰度评价函数·2,447,543篇论文数据，部分数据来源于NoteExpress
利用平方慢度梯度为常数的分布函数进行解析射线追踪其表达式结构简单而又精确，在程序实现上是很方便的。
Programming analytical ray-tracing by making use of square slowness gradient distribution formalism, its expression constitution is simple and accurate, so it is also easy to complete program.
利用梯度平方函数高斯插值实现在峰值附近的精确调焦。
Gauss interpolation realized the fine focusing nearby the peak of focusing curve based on the gradient energy function.
研制的最小平方共轭梯度算法和奇异值分解法也可进行同样的层析反演。
The least square conjugate gradient and odd values decomposition method also can be used to perform tomographic inversion.
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