全变分去噪模型参数的选择研究

Research of TV Denoising Model Parameter Selection

针对全变分模型对参数选取十分敏感的问题,根据模型推导出计算全变分模型最优参数的公式。在传统迭代公式中,添加该公式,利用迭代的方法不断逼近参数最优解,使图像去噪结果达到最优。实验结果表明,当参数初值在大范围内变化时该方法仍能保持全变分模型解的稳定性。

For the problem that total variation model is very sensitive to parameter selection, the formulaused to get optimal parameter of TV model is proposed according to total variation model. The methodadds this formula to traditional iterative formulas, and then approaches to optimal parameter consistentlyby iteration to get best denoised image. The experiments show that the method can make solution of TVmodel steady when the parameters are changed in a large range.