The increasing photorealism for computer graphics has made computer graphics a convincing form of image forgery. Therefore, classifying photographic images and photorealistic computer graphics hasâ€¦ (More)

In this paper, we present a new single-image camera response function (CRF) estimation method using geometry invariants (GI). We derive mathematical properties and geometric interpretation for GI,â€¦ (More)

Camera response function (CRF) is a form of camera signatures which can be extracted from a single image and provides a natural basis for image forensics. CRF extraction from a single-image is inâ€¦ (More)

We construct many self-similar and translating solitons for Lagrangian mean curvature flow, including self-expanders and translating solitons with arbitrarily small oscillation on the Lagrangianâ€¦ (More)

The camera response function (CRF) models the important characteristics of cameras and digital images. Recent work in [1] proposed a method for estimating CRF from a single grayscale image, byâ€¦ (More)

We construct noncompact solutions to the affine normal flow of hypersurfaces, and show that all ancient solutions must be either ellipsoids (shrinking solitons) or paraboloids (translating solitons).â€¦ (More)

In [10], we study solutions to the affine normal flow for an initial hypersurface L âŠ‚ R which is a convex, properly embedded, noncompact hypersurface. The method we used was to consider an exhaustingâ€¦ (More)

We presented a set of physics motivated features for classifying photographic and computer graphic images in our previous work [1]. We also deployed an online demo system for distinguishingâ€¦ (More)

The well-known Bernstein theorem states any complete minimal surface that can be written as the graph of a function on R must be a plane. This type of result has been generalized in higher dimensionâ€¦ (More)