Modeling the Importance of Faces in Natural ImagesBin Jin1 Gokhan Yildirim1 Cheryl Lau1 Appu Shaji1 Maria V. Ortiz Segovia2 Sabine Süsstrunk1 1Image and Visual Representation Lab Ecole Polytechnique Fédérale de Lausanne 2 Océ, A Canon Company AbstractIn this work we study the varying importance of faces in images. Face importance is found to be affected by the size and number of faces present. We collected a dataset of 152 face images with faces in different size and number of faces. We conducted a crowdsourcing experiment where we asked people to label the important regions of the images. Analyzing the results from the experiment, we propose a simple face-importance model, which is a 2D Gaussian function, to quantitatively represent the influence of the size and number of faces on the perceived importance of faces. The face-importance model is then tested for the application of salient-object detection. For this application, we create a new salient-objects dataset, consisting of both face images and non-face images, and also through crowdsourcing we collect the ground truth. We demonstrate that our face-importance model helps us to better locate the important, thus salient, objects in the images and outperforms state-of-the-art salient-object detection algorithms. ResultsMaterials[ Paper ]      [ Slides ]      [ More examples ]      [ Code ]      [ Dataset ]     Citation
Bin Jin, Gokhan Yildirim, Cheryl Lau, Appu Shaji, Maria V. Ortiz Segovia, Sabine Süsstrunk
AcknowledgementsThe authors thank the anonymous reviewers for their useful comments and suggestions. |