1. An image processing apparatus, comprising: a verification data generator configured to receive a set of original images arranged in a sequential order, and to generate a set of verification data corresponding to the set of original images, with each verification data generated based on a corresponding original image and an original image preceding or succeeding the corresponding original image; and a verification data adder configured to generate a set of protected images corrresponding to the set of original images, with each protected image generated by adding corresponding verification data to the corresponding original image.