In this paper, we show a portable surface imaging system based on a dual-line fiber optic sensor array, a customized CIS, for hand-held surface imaging, e.g., skin mirroring, with low-cost and high-performance. In our system, the image is taken by the dual-line image sensor with the fashion of manually shifting; the stretched image caused by the non-uniformly shifting speed is rectified by a novel image processing algorithm. The experimental results demonstrate that the proposed imaging technique is able to take image of the surface of an object, such as solid sample and human skin, which could be a promising technique for low-cost portable surface imaging and has large potentiality in many applications, such as object surface imaging device or skin-mirror, with high portability and performance.