Simulated embossing and imprinting

Patent metadata

Field	Value
Publication number	US-9227428-B2
Application number	US-201213600015-A
Country	US
Kind code	B2
Filing date	Aug 30, 2012
Priority date	Jun 19, 2012
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

Image processing is used to simulate the appearance of an embossed print. The application of clear dry ink or spot varnish to the print generates the tactile feel of an embossed print. Embodiments thus provide a technique that simulates the effect of an embossed print without the need for plates or specialized equipment, other than a printer that is adapted to apply clear dry ink or spot varnish.

First claim

The invention claimed is:

1. A method for simulating the appearance of an embossed print, comprising:
selecting an image of a paper substrate;
rasterizing a vector or image art to be embossed, with a processor into an image having a same size as a final print;
said processor generating an embossing mask from said rasterized image and vector art, wherein said embossing mask is an image that lightens and darkens pixels of the paper substrate image;
said processor using said mask to modulate intensity of said paper substrate image, by lightening and darkening pixels of said paper substrate by pixel-by-pixel multiplication of said mask with said rasterized image and vector art of said paper substrate, to yield an embossed paper image, wherein said embossed paper image simulates visual results of an embossed image;
said processor operating a printer to apply to said paper substrate said rasterized image and vector art, used to create the embossed paper image, as a clear layer to add a dimensional or tactile aspect to said paper substrate; and
said processor adding to said paper substrate any of text and image content that is not to be embossed.

2. The method of claim 1 , said selecting comprising:
providing a processor configured for adjusting a non-white image of a specific paper substrate to both lighten and darken regions of the substrate to simulate a surface normal light reflection.

3. The method of claim 2 , said non-white image comprising ivory or other colored paper.

4. The method of claim 1 , further comprising:
selecting said image from a library of suitable images.

5. The method of claim 1 , further comprising:
providing a processor configured for adjusting said image hue and lightness to recreate a wide variety of artisan paper stocks.

6. The method of claim 1 , said rasterizing performed on any of a separate document for an embossed layer or a full document with a non-embossed text and images out of which an embossing content is selected.

7. The method of claim 1 , further comprising:
said processor generating said embossing mask using convolution with a at least a 3×3 kernel for a desired lighting direction and pixel width.

8. The method of claim 1 , further comprising:
said processor applying an additional filter to smooth larger embossed regions to simulate natural softness of paper deformation.

9. The method of claim 8 , said additional filter comprising a Gaussian low pass filter that is applied to script letters, but not to fine artwork.

10. The method of claim 1 , further comprising:
said processor applying an additional filter to simulate an outline of the vector graphics.

11. The method of claim 1 , further comprising:
said processor applying an additional filter for addition of pixel-by-pixel noise of appropriate special characteristics to create an illusion of increased paper roughness.

12. The method of claim 1 , further comprising:
said processor applying a color filter to simulate any of illumination and reflection of colored light or ink.

13. The method of claim 1 , wherein said clear layer is applied one or more times to build up a desired thickness.

14. The method of claim 1 , wherein said clear layer is applied using a red mask to represent a clear layer.

15. An apparatus for simulating the appearance of an embossed print, comprising:
a processor configured for selecting an image of a paper substrate;
said processor configured for rasterizing a vector or image art to be embossed into an image having a same size as a final print;
said processor configured for generating an embossing mask from said rasterized image and vector art, wherein said embossing mask is an image that lightens and darkens pixels of the paper substrate image;
said processor using said mask to modulate intensity of said paper substrate image, by lightening and darkening pixels of said paper substrate by pixel-by-pixel multiplication of said mask with said rasterized image and vector art of said paper substrate, to yield an embossed paper image, wherein said embossed paper image simulates visual results of an embossed image;
said processor operating a printer to apply to said paper substrate said rasterized image and vector art, used to create the embossed paper image, as a clear layer to add a dimensional or tactile aspect to said paper substrate; and
said processor adding to said paper substrate any of text and image content that is not to be embossed.

16. The apparatus of claim 15 , comprising:
said processor configured for adjusting a non-white image of a specific paper substrate to both lighten and darken regions of the substrate to simulate a surface normal light reflection.

17. The apparatus of claim 16 , said non-white image comprising ivory or other colored paper.

18. The apparatus of claim 15 , comprising:
said processor configured for selecting said image from a library of suitable images.

19. The apparatus of claim 15 , comprising:
said processor configured for adjusting said image hue and lightness to recreate a wide variety of artisan paper stocks.

20. The apparatus of claim 15 , said processor configured for performing said rasterizing on any of a separate document for an embossed layer or a full document with a non-embossed text and images out of which an embossing content is selected.

21. The apparatus of claim 15 , comprising:
said processor configured for generating said embossing mask using convolution with a at least a 3×3 kernel for a desired lighting direction and pixel width.

22. The apparatus of claim 15 , comprising:
said processor configured for applying an additional filter to smooth larger embossed regions to simulate natural softness of paper deformation.

23. The apparatus of claim 15 , comprising:
said processor configured for applying an additional filter to simulate an outline of the vector graphics.

24. The apparatus of claim 15 , comprising:
said processor configured for applying an additional filter for addition of pixel-by-pixel noise of appropriate special characteristics to create an illusion of increased paper roughness.

25. The apparatus of claim 15 , comprising:
said processor configured for applying a color filter to simulate any of illumination and reflection of colored light or ink.

26. The apparatus of claim 22 , said additional filter comprising a Gaussian low pass filter that is applied to script letters, but not to fine artwork.

27. The apparatus of claim 15 , said processor configured for applying said clear layer one or more times to build up a desired thickness.

28. The apparatus of claim 15 , said processor configured for applying said clear layer using a red mask to represent a clear layer.

29. A method for simulating the appearance of an imprinted print, comprising:
selecting an image of a paper substrate;
rasterizing a vector or image art to be imprinted with a processor into an image having a same size as a final print;
said processor generating an imprinting mask from said rasterized image and vector art, wherein said imprinting mask is an image that lightens and darkens pixels of the paper substrate image;
said processor using said mask to modulate intensity of said paper substrate image, by lightening and darkening pixels of said paper substrate by pixel-by-pixel multiplication of said mask with said rasterized image and vector

Assignees

• Williams Leon
• Electronics For Imaging Inc

Inventors

• Williams Leon

Classifications

• G06T11/23

  using straight lines or curves · CPC title

• G06T11/10

  Texturing; Colouring; Generation of textures or colours (retouching, inpainting or scratch removal G06T5/77) · CPC title

• B44C3/025

  Superimposing layers to produce ornamental relief structures · CPC title

• B41J3/38 Primary

  for embossing, e.g. for making matrices for stereotypes · CPC title

• B41M3/06

  Veined printings; Fluorescent printings; Stereoscopic images; Imitated patterns, e.g. tissues, textiles · CPC title