To solve focus detection and multi-focus problems

which are challenging issues in image retargeting based on fisheye transformation technology

a new image retargeting method that uses an improved fisheye transformation technique is proposed in this study. The proposed method calculates seams with high energy on the basis of source image energy. All high-energy seams are found from the high-energy part

which is the focus area of the source image. This source image is retargeted to the target image through fisheye transformation on the basis of seams instead of image regions. The transformation mode of the fisheye warping method is changed and applied to image retargeting. Experimental results show that our method addresses the problems of image retargeting based on fisheye transformation technology. The target images obtained through our method exhibit good visual effect. Users' subjective satisfaction score is about 4. The algorithm runs fast when the length of the target image is half of the source image (512×384). The running time is 6 s. In this study

we propose a new method based on fisheye transformation technology for image retargeting. The method preserves the advantage of fisheye warping in retaining the focused areas of the image without discarding unfocused contents. It also uses an optimal high-energy seam finding scheme to address the problems on focus detection and multi-focus conflict. The visual effect of target images and the subjective satisfaction of users indicate that the proposed approach is a viable solution for image retargeting based on fisheye warping.