Image processing apparatus for performing edge preserving smoothing and image processing method thereof

An image processing apparatus for performing edge preserving smoothing and an image processing method thereof are disclosed. The image processing apparatus includes a low-resolution image generating circuit configured to generate a low-resolution image including a second pixel corresponding to first pixels based on an input image including the first pixels, and an edge preserving smoothing circuitconfigured to generate a reliability of the second pixel based on characteristics of values of the first pixels and perform edge preserving smoothing on the input image using a value of the second pixel of which a reflection ratio is adjusted, based on the reliability of the second pixel. 提供了一种配置为执行保边平滑的图像处理设备及其图像处理方法。一种图像处理设备包括：低分辨率图像产生电路，被配置为基于包括第一像素的输入图像产生包括与第一像素相应的第二像素的低分辨率图像；以及保边平滑电路，被配置为：基于第一像素的值的特性产生第二像素的可靠性，并且基于第二像素的可靠性使用被调整了反映率的第二像素的值对所述输入图像执行保边平滑。