CAJ | 학술논문

红外图像边缘模糊,对比度较低,不适合人眼观察,应该对其进行增强.但是,以往的增强方法对噪声增强过度,使细节失真,且未考虑人眼的视觉特性,视觉效果不够好.提出用多重分形理论对红外图像进行分析,提取了红外图像的多重分形奇异指数和多重分形谱特征.分析得到了图像每个像素的分形特征数据,利用人眼的视觉敏感特征把图像的像素分为平滑区、纹理区和边缘区.人眼视觉空间频率特征对图像细节的边缘区域比较敏感,利用这一特性对图像加权增强.最后,进行了计算机仿真实验,实验结果表明:该方法能够突显人眼敏感的图像区域,解决红外图像边缘模糊的问题,使增强图像更适合人眼观察.
홍외도상변연모호,대비도교저,불괄합인안관찰,응해대기진행증강.단시,이왕적증강방법대조성증강과도,사세절실진,차미고필인안적시각특성,시각효과불구호.제출용다중분형이론대홍외도상진행분석,제취료홍외도상적다중분형기이지수화다중분형보특정.분석득도료도상매개상소적분형특정수거,이용인안적시각민감특정파도상적상소분위평활구、문리구화변연구.인안시각공간빈솔특정대도상세절적변연구역비교민감,이용저일특성대도상가권증강.최후,진행료계산궤방진실험,실험결과표명:해방법능구돌현인안민감적도상구역,해결홍외도상변연모호적문제,사증강도상경괄합인안관찰.
The infrared image was mostly unsuitable to human eyes due to its blurred edge and low contrast,so it is necessary to further enhance the infrared image.Most of the existing infrared imagee nhancement algorithms excessively enhance the noise,distort the details,and do not take account of the visual characteristic of human eyes that lead to the unsatisfactory visual effect of the enhanced image.A multifractal theory was proposed to analyze the infrared image in this paper.The multifractal singular index and spectrum feature were extracted.The fractal dimensions of each pixel were obtained,and the image was divided into smooth area,texture area,and edge detail area based on human visual system (HVS).HVS was sensitive to the edge structure of image.Pixel gray was weighed and enhanced based on the fractal dimension.Simulation experiment was completed.The result show that the proposed imagee nhancement method is applicable,and it highlights the sensitive image area for human eyes,solves the problem of low contrast and blurred edge,and makes the enhanced image more suitable for human observation.