红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2013年
6期
1635-1641
,共7页
图像杂波度量%结构差异性%视觉显著性度量%目标获取性能
圖像雜波度量%結構差異性%視覺顯著性度量%目標穫取性能
도상잡파도량%결구차이성%시각현저성도량%목표획취성능
image clutter metric%structural difference%vision saliency metric%target acquisition performance
针对光电图像杂波效应对目标获取性能的影响,提出一种基于人眼视觉特性的图像结构差异性杂波度量。依据人眼对图像结构的高度自适应性以及图像质量评估领域广泛认可的图像结构的定义方法,计算目标和杂波的结构相似性;并根据人眼的视觉显著性原理,给出两种适用于结构相似性的显著性加权信息度量。采用外场实验对该杂波度量的合理性进行验证,得出基于该杂波度量的目标预测性能与外场目标获取性能,在均方根误差、相关性方面都优于现有的杂波度量的预测性能。
針對光電圖像雜波效應對目標穫取性能的影響,提齣一種基于人眼視覺特性的圖像結構差異性雜波度量。依據人眼對圖像結構的高度自適應性以及圖像質量評估領域廣汎認可的圖像結構的定義方法,計算目標和雜波的結構相似性;併根據人眼的視覺顯著性原理,給齣兩種適用于結構相似性的顯著性加權信息度量。採用外場實驗對該雜波度量的閤理性進行驗證,得齣基于該雜波度量的目標預測性能與外場目標穫取性能,在均方根誤差、相關性方麵都優于現有的雜波度量的預測性能。
침대광전도상잡파효응대목표획취성능적영향,제출일충기우인안시각특성적도상결구차이성잡파도량。의거인안대도상결구적고도자괄응성이급도상질량평고영역엄범인가적도상결구적정의방법,계산목표화잡파적결구상사성;병근거인안적시각현저성원리,급출량충괄용우결구상사성적현저성가권신식도량。채용외장실험대해잡파도량적합이성진행험증,득출기우해잡파도량적목표예측성능여외장목표획취성능,재균방근오차、상관성방면도우우현유적잡파도량적예측성능。
Optoelectronic image clutter is seriously affecting target acquisition performance, in this paper, an image structural difference clutter metric based on human visual properties was proposed for quantifying background clutter. On the basis of high adaptability of human visual perception in extracting image structural information, a structural similarity measuring map was calculated between the target and clutter images according to the widely accepted definition of the structural-similarity (SSIM) index in the field of image quality assessment(IQA). And then, based on human vision saliency, two kinds of suitable saliency information weighting measures were developed to pool the structural similarity measuring map into a metric. The metric was tested in an outfield experiment provided by TNO Human Factors Research Institute of Netherlands. Comparative experiments demonstrate that this metric makes an improvement in RMS error and correlation than previously proposed image clutter metrics in predicting target acquisition performances including detection probabilities and false alarm probabilities.