To solve the unsynchronized problem between the transmitter end and the receiver end in visible light implicit imaging communication, we analyze the characteristics of display camera link, and summarize the unsynchronized problems as frame loss and frame fusion. Aiming at the frame loss and frame fusion, we establish a reasonable mathematical model for received frames. Based on the model, a frame loss detecting algorithm is proposed by analysis of spatial mean characteristics of difference frame absolute values, and a frame fusion fuzzy region detecting algorithm is proposed by utilization of row mean characteristics of difference frame absolute values and row variance characteristics of difference frames. The simulation and experimental results show that the proposed frame synchronization compensation algorithms can solve the frame loss and frame fusion effectively, achieve good frame synchronization effect, improve system bit error rate performance, and complete reliable transmission of implicit information.