煤炭技术
煤炭技術
매탄기술
COAL TECHNOLOGY
2013年
11期
132-132,133
,共2页
煤矿监控图像%图像去噪%四阶PDE%计算机仿真
煤礦鑑控圖像%圖像去譟%四階PDE%計算機倣真
매광감공도상%도상거조%사계PDE%계산궤방진
monitoring image in underground coal mine%image denoising%fourth order PDE%the computer simulation
煤矿井下特殊的应用环境直接影响着图像的质量,导致图像视觉效果较差。文章提出一种改进的基于四阶PDE的去噪方法,该方法将图像区域分为闪点区域和非闪点区域,并针对不同的区域采用不同的传导系数。与传统的各向异性扩散方法相比较,仿真实验结果表明,该方法在抑制噪声的同时能够有效克服二阶偏微分方程引起的块效应、消除闪点并保持图像的边缘、线条纹理等细节,从而达到更好的图像质量和视觉效果。
煤礦井下特殊的應用環境直接影響著圖像的質量,導緻圖像視覺效果較差。文章提齣一種改進的基于四階PDE的去譟方法,該方法將圖像區域分為閃點區域和非閃點區域,併針對不同的區域採用不同的傳導繫數。與傳統的各嚮異性擴散方法相比較,倣真實驗結果錶明,該方法在抑製譟聲的同時能夠有效剋服二階偏微分方程引起的塊效應、消除閃點併保持圖像的邊緣、線條紋理等細節,從而達到更好的圖像質量和視覺效果。
매광정하특수적응용배경직접영향착도상적질량,도치도상시각효과교차。문장제출일충개진적기우사계PDE적거조방법,해방법장도상구역분위섬점구역화비섬점구역,병침대불동적구역채용불동적전도계수。여전통적각향이성확산방법상비교,방진실험결과표명,해방법재억제조성적동시능구유효극복이계편미분방정인기적괴효응、소제섬점병보지도상적변연、선조문리등세절,종이체도경호적도상질량화시각효과。
The final monitoring images in video monitoring system are usually in low contrast and brightness because of special application environment in underground mine. A improved denoising method based fourth-order Partial Differential Equations (PDE) is proposed in this paper. The proposed method segments the image domain into speckle domain and non-speckle domain, then uses different conductance coefficients depending on the domain type. Comparing to traditional anisotropic diffusion method, the simulation results show that this method will suppress the noise so as to achieve a better image quality and visual effect. At the same time, it can effectively remove isolated speckles, eliminates flash point ,keeps edge details and line texture in the image.