Abstract: This study proposes DCT (Discrete Cosine Transform) based NGVF (Gradient Vector Flow in Normal Direction) Active Contours. Extensive research has been done on DCT based GVF Active Contours and the strengths of DCT based GVF Active Contours have been established. NGVF, the recent improvement to the GVF Active Contour has faster convergence speed towards the concavity and bigger time step. It also has the capability to enter into long, thin indention and provide a good contour. Based on the strength of the DCT based GVF Active Contours and the foundational strength of the NGVF, the study propose the DCT based NGVF Active Contours. Experimental testing and validation experiments support the proposed DCT based NGVF Active Contours, which is expected to be a good segmentation technique.