SEGMENTED LAYERED IMAGE SYSTEM
First Claim
1. A document encoding system comprising:
- a mask separator that receives a document image and generates a mask from the document image, the mask being generated at least in part via merging regions by pairs of the document image based at least in part upon minimization of pixel energy; and
an image segmenter that segments the document image into a plurality of layers according to the mask, the plurality of layers represented in non-binary format.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for encoding and decoding document images are disclosed. Document images are segmented into multiple layers according to a mask. The multiple layers are non-binary. The respective layers can then be processed and compressed separately in order to achieve better compression of the document image overall. A mask is generated from a document image. The mask is generated so as to reduce an estimate of compression for the combined size of the mask and multiple layers of the document image. The mask is then employed to segment the document image into the multiple layers. The mask determines or allocates pixels of the document image into respective layers. The mask and the multiple layers are processed and encoded separately so as to improve compression of the document image overall and to improve the speed of so doing. The multiple layers are non-binary images and can, for example, comprise a foreground image and a background image.
-
Citations
20 Claims
-
1. A document encoding system comprising:
-
a mask separator that receives a document image and generates a mask from the document image, the mask being generated at least in part via merging regions by pairs of the document image based at least in part upon minimization of pixel energy; and
an image segmenter that segments the document image into a plurality of layers according to the mask, the plurality of layers represented in non-binary format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of encoding a document comprising:
-
generating a mask for a document image at least in part via merging regions by pairs of the document image based at least in part upon minimization of pixel energy; and
segmenting the document image into a foreground image and a background image, the foreground image and the background image being a non-binary format. - View Dependent Claims (13, 14, 15, 16, 17, 18)
-
-
19. A document encoding system, comprising:
-
means for converting a colorspace of a document image;
means for receiving the document image from the colorspace converting means and generating a mask for the document image; and
means for receiving the document image from the colorspace converting means and segmenting the document image into a foreground image and a background image according to the mask, don'"'"'t care regions of at least one of the foreground and background images are filled with don'"'"'t care pixels. - View Dependent Claims (20)
-
Specification