“Modern Approaches to Media Retargeting” by Shamir, Sorkine-Hornung and Sorkine-Hornung
Conference:
Type(s):
Title:
- Modern Approaches to Media Retargeting
Presenter(s)/Author(s):
Abstract:
In recent years, many content aware methods for media manipulations have gained popularity. Images and videos are analyzed; segmented and semantic information is extracted to assist many manipulation algorithms. One of the problems that drew much attention in recent years is media retargeting. Due to the increase in variety of commonly used display devices, and the prevalent use of mobile devices as available means for media intake, media needs to be adapted to different resolutions and aspect ratios. The goal of this course is to present the basic problem of media retargeting and detail the different methods devised recently to solve it. We will start with a short overview of image and video representation and concentrate on the different view points of media as a discrete entity (pixels, graphs) or as a sampling of a continuous entity (signal). We will then present the common pipeline for retargeting, used in both discrete and continuous methods. This includes first extracting some importance or saliency maps from the media, and then using this information while applying the different retargeting operators. We will present several ways to define importance maps and saliency that use spatial information in images and also temporal information in video. Then we will present different discrete approaches (seam carving, shift maps) and continuous approaches (warping). Lastly, we will present newer methods that combine several operators to achieve better results.
Additional Information:
Level
Beginner
Intended Audience
na
Prerequisites
Basic understanding of math and computer graphics or image processing at a graduate level.
