CAJ | 학술논문

针对沙尘暴环境下，因大气介质中悬浮的沙尘颗粒的散射作用导致的视频图像质量严重下降，清晰度与对比度降低，边缘模糊等问题，本文提出了一种空间域与变换域相结合的沙尘图像增强方法。先将降质图像转换到模糊域进行全局沙尘图像的PAL模糊增强；然后在空间域利用带限局部直方图自适应均衡算法对局部分量进行增强处理，最后利用POSHE算法对局部细节再次进行增强处理。实验结果表明，所提方法能够有效的提高沙尘图像的对比度，突出图像细节与边缘信息，增强了图像的整体视觉效果。
침대사진폭배경하，인대기개질중현부적사진과립적산사작용도치적시빈도상질량엄중하강，청석도여대비도강저，변연모호등문제，본문제출료일충공간역여변환역상결합적사진도상증강방법。선장강질도상전환도모호역진행전국사진도상적PAL모호증강；연후재공간역이용대한국부직방도자괄응균형산법대국부분량진행증강처리，최후이용POSHE산법대국부세절재차진행증강처리。실험결과표명，소제방법능구유효적제고사진도상적대비도，돌출도상세절여변연신식，증강료도상적정체시각효과。
For the problem of serious decline in the quality of the video image, sharpness and contrast reduction, edge blur and etc due to the atmospheric scattering of dust particles in dust environment, the paper proposes a dust image enhancement method, which combine the spatial domain and transform domain. First convert the degraded image into fuzzy domain to conduct PAL fuzzy image enhancement of global dust image;Then in the spatial domain, use the band-limited local histogram adaptive equalization algo-rithm to enhance the local component;Finally apply POSHE algorithm to enhance the local details. The experiment results show that the proposed method can effectively improve the dust image contrast, details and edge information, enhance the overall visual effect of the image.