CAJ | 학술논문

针对基于颜色传递的双波段（中波红外、可见光）图像融合时，由于参考图像选择不当，造成的彩色融合图像对比度差、图像边缘细节下降等问题，提出了基于拉普拉斯金字塔分解及对比度可调的色彩传递图像融合算法。对待融合的两幅图像进行拉普拉斯金字塔三级分解，每一级按照不同的融合规则进行融合，以重构后的灰度融合图像作为融合结构的亮度分量Y，将可见光与红外图像的差值图像作为U分量，以红外图像为V分量。在颜色传递公式中，加入可调的比例系数，通过适当调节比例系数可调节融合图像的对比度。实验结果表明，获得的融合图像较好地保留了可见光图像的细节，既突出了红外目标同时又具有参考图像的颜色特征。图像评价结果表明，融合图像的均值、方差、熵等评价指标均得到较大提高。
침대기우안색전체적쌍파단（중파홍외、가견광）도상융합시，유우삼고도상선택불당，조성적채색융합도상대비도차、도상변연세절하강등문제，제출료기우랍보랍사금자탑분해급대비도가조적색채전체도상융합산법。대대융합적량폭도상진행랍보랍사금자탑삼급분해，매일급안조불동적융합규칙진행융합，이중구후적회도융합도상작위융합결구적량도분량Y，장가견광여홍외도상적차치도상작위U분량，이홍외도상위V분량。재안색전체공식중，가입가조적비례계수，통과괄당조절비례계수가조절융합도상적대비도。실험결과표명，획득적융합도상교호지보류료가견광도상적세절，기돌출료홍외목표동시우구유삼고도상적안색특정。도상평개결과표명，융합도상적균치、방차、적등평개지표균득도교대제고。
Because of the inappropriate choose of reference image , double band ( midwave infrared and visi-ble ) color fusion image based on the color transfer method has low contrast , decreasing image edge details and the infrared target is not prominent .We present a new algorithm based on the Laplacian Pyramid , and the contrast could be adjusted anywhere .We use the Laplacian reconstructed image as the luminance component of the YUV image fusion constructure , the differential image of visible image and infrared image as the U com-ponent , and the infrared image as the V component .In the color transfer formula , the adjustable scaling factor is brought in to adjust the contrast of fusion image .Experiments show that by using the improved method , the color fusion image retains meaningful details .The infrared target is prominent and the fusion image has similar color distribution with the reference image .We evaluate the quality of fusion image by using objective meth-ods, and the result shows that evaluation indexes such as the mean , variance, entropy, average gradient and spatial frequency are improved .