20 search results - page 3 / 4 » Polyomino-Based Digital Halftoning |
SIBGRAPI
2003
IEEE
13 years 10 months ago
2003
IEEE
Abstract. Authentication watermarking is a hidden data inserted into an image, in order to detect any alterations. It seems to be almost impossible to design a really secure authen...
ICC
2008
IEEE
13 years 11 months ago
2008
IEEE
— Two-dimensional (2D) optical intensity channels exist in a variety of applications including holographic storage, page-oriented memories, optical interconnects, 2D barcodes, as...
PICS
2003
13 years 6 months ago
2003
Halftone printing has been developing in a linear manner since the inception of photography. The process of refinement has taken it from one level to another producing increasingl...
ICIP
2003
IEEE
14 years 6 months ago
2003
IEEE
We present an authenticable graphical barcode symbology, and describe a system for its reliable encoding and decoding. The graphical barcode is generated by modulating halftone pa...
JEI
2007
13 years 5 months ago
2007
Multiscale error diffusion (MED) is superior to conventional error diffusion algorithms as it can eliminate directional hysteresis completely. However, due to its frame-oriented p...