基于梯度自适应函数的彩色图像变分去噪方法

分析了彩色图像的全变分降噪模型,该模型在降噪的同时可以保持好图像的特征信息,但对于噪声较大的图像具有明显的"阶梯效应".Blomgren的基于梯度自适应函数的去噪模型只能处理灰度图像,因此提出改进的基于彩色图像的梯度自适应函数去噪模型.实验证明,改进的模型有效地解决了"阶梯效应"的发生,提高了模型的去噪能力和边缘保持能力.

Color image denoising variational method based on adaptive gradient function

This artide analyses color images variational denoising model,which can maintain image characteristics information at the same time denoising,but has"staircasing effect"for the image with larger noise.Blomgren adaptive gradient function is also introduced,which can only deal with gray-scale images.According to this,an improved color image denoising variational method based on adaptive gradient function is presented.Experimental results illustrate the effectiveness of the model in removing noise and retaining sharp edges while avoiding the staircasing effect.