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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Content Aware Metric for Image Resizing Assessment
verfasst von : Lifang Wu, Lianchao Cao, Jinqiao Wang, Shuqin Liu
Erschienen in: The Era of Interactive Media
Verlag: Springer New York
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Abstract
Development of mobile multimedia techniques requires image resizing. An image quality assessment (IQA) metric is needed for objectively assessing image resizing approaches. Most of existing IQA approaches are designed for images of the same size, and are not suitable for image resizing application. In this paper, we propose a Content Aware Metric (CAM) to evaluate the similarity between resized image and the original one. By introducing the Structure Similarity (SSIM) metric for retargeting assessment, we firstly analyze how image resizing influences the different components of SSIM. Then we divide the important regions into lots of important sub images, which are represented by the coordinates of centers. We track the location of all the sub images and compute the similarity of corresponding sub images. The CAM is obtained by averaging the distance of all sub images. The CAM is effective for assessing the quality of Seam Carving, and the experimental results show that our metrics is consistent with human observation.