This paper reports an alternative approach to the evaluation of infrared camouflage effectiveness via a multi-fractal method. By calculating multi-fractal spectra of the target region and the background regions in an infrared image, the spectrum shape features and the discrete Fréchet distances among these spectra were used to analyze the camouflage effectiveness of the target qualitatively and quantitatively, and the correlation coefficients of the spectra were further used as the index of camouflage effectiveness. It was found that the camouflaged target had better camouflage effectiveness than the target without camouflage in the same one background, and the same one camouflaged target had different camouflage effectiveness in different backgrounds. On the whole, the target matching well with its background had high camouflage effectiveness value. This approach can expand the application of multi-fractal theory in infrared camouflage technology, which should be useful for the research of infrared camouflage materials, the design of camouflage patterns as well as the deployment of military equipment in battlefield.

本文报告了一种通过多重分形方法评估红外伪装效果的替代方法。通过计算红外图像中目标区域和背景区域的多重分形光谱，利用光谱形状特征和光谱之间的离散弗雷谢距离定性和定量分析目标的伪装效果，以及相关系数。光谱进一步用作伪装效果的指标。结果发现，在相同的一个背景下，被伪装的目标比没有伪装的目标具有更好的伪装效果；在相同的背景下，相同的一个被伪装的目标具有不同的伪装效果。总体上，目标与其背景匹配良好，伪装效果值较高。这种方法可以扩展多分形理论在红外伪装技术中的应用，这对红外伪装材料的研究，伪装图案的设计以及战场上军事装备的部署将是有益的。