(EN) The invention provides an image fusion method and device thereof, and the method comprises: converting a visible light image collected by image collection equipment into a red, green and blue RGB image, and converting a near-infrared image collected by the image collection equipment into a first brightness image; converting the RGB brightness image into a second brightness image, and performing near-infrared image fusion weight calculation according to the first brightness image to obtain a fusion weight graph of the near-infrared image; performing brightness fusion on the first brightness image and the second brightness image according to the fusion weight graph to obtain a brightness fusion image; and performing RGB fusion according to the second brightness image, the brightness fusion image and the RGB image to obtain a fused RGB image. According to the method, the brightness of the image in the low-illumination environment can be improved, the color information of the image is maintained, and the quality of the fused image is improved.
(ZH) 本申请提供一种图像融合方法及其装置，该方法包括：将所述图像采集设备采集的可见光图像转换为红绿蓝RGB图像，以及，将所述图像采集设备采集的近红外图像转换为第一亮度图像；将所述RGB亮度图像转换为第二亮度图像，以及根据所述第一亮度图像进行近红外图像融合权重计算，以得到所述近红外图像的融合权重图；根据所述融合权重图对所述第一亮度图像和所述第二亮度图像进行亮度融合，以得到亮度融合图像；根据所述第二亮度图像、所述亮度融合图像以及所述RGB图像进行RGB融合，以得到融合后的RGB图像。该方法可以提升低照度环境下图像的亮度，保持图像的色彩信息，提升融合后的图像的质量。
