3D ancient mosaics

Abstract

Digital 3D mosaics generation is a current trend of NPR (Non Photorealistic Rendering) field; in this demo we present an interactive system realized in JAVA where the user can simulate ancient mosaic in a 3D environment starting for any input image. Different simulation engines able to render the so-called "Opus Musivum" and "Opus Vermiculatum" are employed. Different parameters can be dynamically adjusted to obtain very impressive results.

Artificial Mosaic Generation with Gradient Vector Flow and Tile Cutting

“…Moreover, the properties of GVF about edge information propagation permit us to obtain graceful results (no visually artefact). It should be noted that a simple 2D mosaic can be better used as starting point for other image manipulations (e.g., 3D mosaic generation [27]). The execution time related to the considered techniques has been also reported in Table 2.…”

An Efficient Steganography with Mosaic Images for Covert Communication

“…Steganography is the science of hiding secret messages into cover media so that no one can realize the existence of the secret data [1][2]. Existing steganography techniques may be classified into three categories image, video, and text steganographies, and image steganography aims to embed a secret message into a cover image with the yielded stego-image looking like the original cover image.…”

“…Invented in ancient time, they are still used in many applications today. Creation of mosaic images by computer [1] is a new research direction in recent years.. A good survey under a unified framework can be found in Battiato et al [2] in which a taxonomy of mosaic images into four types is proposed, including crystallization mosaic, ancient mosaic, photo-mosaic, and puzzle image mosaic. The first two types are obtained from decomposing a source image into tiles (with different colors, sizes, and rotations) and reconstructing the image by properly painting the tiles, and so they both may be called tile mosaics.…”