Study on Image Retargeting Methods in View of Importance-Map

This paper analyzes the characteristics of the state-of-the-art technologys with regard to content-aware image retargeting in detail, contrasts the merits and demerits between diverse technologys, and lists the performance and effect about each method. The primary processes of content-aware image retargeting are divided into two steps: first step is the recognition of image importance-map, which is generally generated by the combination of image gradient and visual significance, indicates that human eyes generates diverse sensitivity of watching different area in image; Current papers with respect to content-aware image retargeting primarily centers on the resizing method in the second step. In the light of the traits of different ways, this article subdivided the technologys into three categories: on account of seam-carving, image-deformation and multi-operator. At last, we give the final qualitative analysis about the three algorithms mentioned above.