CAJ | 학술논문

分析了红外热波检测图像中噪声生成机理，针对图像的噪声去除增强问题，提出了一种改进的非线性偏微分方程的热波检测图像去噪增强方法。对偏微分方程在图像处理应用中的理论基础进行研究，针对现有的偏微分方程模型在图像去噪中存在的问题，并结合热波图像的特点，改进相应的偏微分方程数学模型，在此基础上对获得原始热图进行编程处理，试验结果表明：经过处理后的图像信噪比提高，对比度得到了改善，为后续的缺陷提取及损伤识别奠定了基础。
분석료홍외열파검측도상중조성생성궤리，침대도상적조성거제증강문제，제출료일충개진적비선성편미분방정적열파검측도상거조증강방법。대편미분방정재도상처리응용중적이론기출진행연구，침대현유적편미분방정모형재도상거조중존재적문제，병결합열파도상적특점，개진상응적편미분방정수학모형，재차기출상대획득원시열도진행편정처리，시험결과표명：경과처리후적도상신조비제고，대비도득도료개선，위후속적결함제취급손상식별전정료기출。
The noise mechanism of infrared thermal wave non-destructive testing is analyzed.In order to suppress the noise and enhance the image,a new image denoising algorithm for infrared thermal wave NDT based on the improved nonlinear partial differential equation(PDE)is proposed.Firstly,the theoretical basis of PDE for image processing was studied.To solve the existing problems of the PDE in image processing,and combined the characteristics of the ther-mal wave images,the mathematical model of PDE was improved,and then the original infrared image was processed by programming.The results show that the SNR of image and the contrast are improved,which lays a foundation for the defect extraction and damage identification.