Roger D. Hersch

Juxtaposed clustered dispersed dot halftoning

Two-dimensional codes hidden as scattered line segments

Fabrication of moiré on curved surfaces

Synthesis of moving and beating moiré shapes

Synthesis of curved surface moiré

Authentication and tracking by hidden codes

2D-3D sculpture paintings

SYNTHETIC ELECTRONIC VIDEO CONTAINING A HIDDEN IMAGE

Color changing effects with cross-halftone prints

Synthesis of superposition shape images by light interacting with layers of lenslets

Color changing effects with cross-halftone prints on metal

Color reproduction, pattern hiding and image alternations with halftone prints on metal

Synthesis of authenticable halftone images with non-luminescent halftones illuminated by an adjustable luminescent emissive layer

Synthesis of authenticable color multi-halftone images

Synthesis of authenticable halftone images with non-luminescent halftones illuminated by a luminescent emissive layer

Synthesis of authenticable luminescent color halftone images

Authentication with built-in encryption by using moire parallax effects between fixed correlated s-random layers

Method and computing system for creating and displaying images with animated microstructures

Printing color images visible under UV light on security documents and valuable articles

Replicated multi-channel sensors for decucing ink thicknesses in color printing devices

Ink thickness variations for the control of color printers

Synthesis of superposition images for watches, valuable articles and publicity

Authentication of secure items by shape level lines

Model-based synthesis of band moire images for authentication purposes

Method and apparatus for generating digital halftone images by multi color dithering

Model-based synthesis of band moire images for authenticating security documents and valuable products