The laser dazzling effect has always been a crucial issue for the scientific community. Nevertheless, the experiments to study the laser dazzling effect may cost a lot. Therefore, the technology of simulation is promising for this field. Additionally, the effectiveness of the laser dazzling needs to be evaluated by a no reference cost functions. A general model of CCD is proposed in this paper. Additionally, two cost functions are proposed to evaluate the image. The simulation result based on the model shows feasibility of the cost functions. Afterwards an experiment is carried out to testify these cost functions. Different factors include the intensity of the irradiance, the beam radius and the dazzling location of the laser are taken into consideration. The experimental result shows the cost functions have monotonous relationship with the degree of the laser dazzling. This result indicates that the cost functions can be used in the field to measure the degree of the laser dazzling.