英语翻译We define a feature vector X as the concatenated RGB col

英语翻译We define a feature vector X as the concatenated RGB color and spatial temporal coordinate(x;y;t) at a pixel i in the recoloring and matting applications.Here,t is the video frame index.In the colorization application,we define the feature vector X as the concatenated texture feature,SIFT descriptor,intensity and spatial coordinate.需要专业翻译,求别直接网上翻译粘过来,如这里的concatenated就非常不理解