Yo-Sung Ho Kwangju Institute of Science and Technology Department of Information and Communications 1 Oryong-dong, Puk-gu Kwangju, 500-712 Korea Abstract. The block-matching motion estimation algorithm using a translational motion model cannot provide acceptable image quality in low bit-rate coding. To improve coding performance, we can use image warping using affine transformation as a more co...

Relighting a portrait in a single image is still a challenging problem, particularly when only a single artistic reference photograph or painting is provided. In this paper, we propose an artistic illumination transfer system for portraits based on a database of portrait images (photographs and paintings) associated with hand-drawn illumination templates (276) by artists. Users can select a ref...

An accurate comparison of inter-individual 3D image datasets of brains requires warping techniques to reduce geometric variations. In this study we use a point-based method of warping with weighted sums of displacement vectors, which is extended by an optimization process. To improve the practicability of 3D warping, we investigate fast automatic procedures for determining landmarks. The combin...

This paper presents a predictive-coding algorithm for the compression of multiple depth-sequences obtained from a multi-camera acquisition setup. The proposed depth-prediction algorithm works by synthesizing a virtual depth-image that matches the depth-image (of the predicted camera). To generate this virtual depth-image, we use an image-rendering algorithm known as 3D image-warping. This newly...

Image retargeting is a critical technique for browsing images in diversified terminals. In this paper, we propose a hybrid image resizing approach by jointly using seam carving and warping. Firstly, based on the importance partition with the saliency map, we apply a weighted seam carving approach to make the seams distributed dispersedly in the important regions. Then we propose Content Aware I...

William R. Mark POST-RENDERING 3D IMAGE WARPING: VISIBILITY, RECONSTRUCTION, AND PERFORMANCE FOR DEPTH-IMAGE WARPING (Under the direction of Dr. Gary Bishop) The images generated by real-time 3D graphics systems exhibit enormous frame-to-frame coherence, which is not exploited by the conventional graphics pipeline. I exploit this coherence by decoupling image rendering from image display. My sy...

We demonstrate that, for a large class of re ectance functions, there is a direct relationship between image warps and the corresponding geometric deformations of the underlying three-dimensional objects. This helps explain the hidden geometrical assumptions in object recognition schemes which involve two-dimensional image warping computed by matching image intensity. In addition, it allows us ...

This paper addresses the problem of stabilizing spherical videos. Whereas various techniques have been proposed to stabilize conventional videos, this work is the first approach proposed for omnidirectional videos. We introduce a method for extracting the camera path and 3D information of the environment. A desired smooth stabilized path is obtained by modifying the original camera path. We pro...

We present in this article a system which improves a DEM. The method reconstructs all the facades of the building and then, corrects the initial DEM by deleting the points of the roofs which pass over the boundaries defined by the facades. We correct the shapes of the buildings with the initial photographs to have sharp contours. The proposed approach does not use any a priori information about...