Chrominance signal interpolation of YUV4:2:0 format color images

Summary form only given. This paper presents a chrominance signal interpolation method for YUV4:2:0 format color images. The conventional interpolation methods are linear interpolation, such as bilinear interpolation, bicubic interpolation and so on. In the YUV4:2:0 format, the chrominance signal has lost its high-frequency components. The lost high-frequency components cannot be recovered by the linear interpolation technique. The proposed method aims at the recovery of high-frequency components of the chrominance signals using the luminance signal (i.e., Y signal) as the extension of bilinear interpolation. Since, in the case of the YUV4:2:0 format, the luminance signal has high-frequency components. Simulation results show the superior performance of the proposed approach, compared with bilinear interpolation.