Adaptive energy selection for content-Aware image resizing

Kazuma Sasaki, Yuya Nagahama, Zheng Ze, Satoshi Iizuka, Edgar Simo-Serra, Yoshihiko Mochizuki, Hiroshi Ishikawa

研究成果: Conference contribution

抄録

Content-Aware image resizing aims to reduce the size of an image without touching important objects and regions. In seam carving, this is done by assessing the importance of each pixel by an energy function and repeatedly removing a string of pixels avoiding pixels with high energy. However, there is no single energy function that is best for all images: The optimal energy function is itself a function of the image. In this paper, we present a method for predicting the quality of the results of resizing an image with different energy functions, so as to select the energy best suited for that particular image. We formulate the selection as a classification problem; i.e., we 'classify' the input into the class of images for which one of the energies works best. The standard approach would be to use a CNN for the classification. However, the existence of a fully connected layer forces us to resize the input to a fixed size, which obliterates useful information, especially lower-level features that more closely relate to the energies used for seam carving. Instead, we extract a feature from internal convolutional layers, which results in a fixed-length vector regardless of the input size, making it amenable to classification with a Support Vector Machine. This formulation of the algorithm selection as a classification problem can be used whenever there are multiple approaches for a specific image processing task. We validate our approach with a user study, where our method outperforms recent seam carving approaches.

本文言語English
ホスト出版物のタイトルProceedings - 4th Asian Conference on Pattern Recognition, ACPR 2017
出版社Institute of Electrical and Electronics Engineers Inc.
ページ858-863
ページ数6
ISBN(電子版)9781538633540
DOI
出版ステータスPublished - 2018 12 13
イベント4th Asian Conference on Pattern Recognition, ACPR 2017 - Nanjing, China
継続期間: 2017 11 262017 11 29

出版物シリーズ

名前Proceedings - 4th Asian Conference on Pattern Recognition, ACPR 2017

Other

Other4th Asian Conference on Pattern Recognition, ACPR 2017
国/地域China
CityNanjing
Period17/11/2617/11/29

ASJC Scopus subject areas

  • 人工知能
  • コンピュータ ビジョンおよびパターン認識
  • 信号処理

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