Through specific study of the characteristic of scanned project graph, a de-noise algorithm based on the pixels density is proposed.
通过仔细研究工程扫描图象的特征，提出一种基于密度划分的去噪算法。
2
To remedy disadvantage of traditional median filtering algorithms in image de-noise, adaptive median filter is introduced and applied to image de-noise.
为了弥补传统中值滤波器在进行图像降噪处理中的不足，在图像降噪技术中应用了自适应中值滤波器。
3
Assisted by other bands high frequency geometric information, reconstruct noise band image with wavelet reconstruction filter to de-noise noise band image.