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Apparatus and method for interpolating binary pictures, using context probability table

a probability table and approximation method technology, applied in the field of interpolation of binary pictures, can solve the problems of inaccuracy of correlation in linear interpolation methods, and difficulty in processing floating values between 0 and 1 by using only software and hardwar

Inactive Publication Date: 2008-08-26
PANTECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Benefits of technology

This approach enables more accurate interpolation by considering the correlation between pixels, improving the accuracy of binary picture information up-sampling and decoding, especially in scalable binary picture information coding.

Problems solved by technology

A correlation in such linear interpolating method is not accurate.
The probable values are in general floating values between 0 and 1, but there is much difficulty to process the floating values between 0 and 1 by using only software and hardware.

Method used

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  • Apparatus and method for interpolating binary pictures, using context probability table
  • Apparatus and method for interpolating binary pictures, using context probability table
  • Apparatus and method for interpolating binary pictures, using context probability table

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Embodiment Construction

[0040]Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

[0041]FIG. 3 shows one embodiment with the construction of an inventive interpolating apparatus.

[0042]A block dividing sector 31 divides binary picture information into blocks of a given size, e.g., 16×16, 8×8, etc. A bordering sector 32 executes a bordering on blocks outputted from the block dividing sector 31. A horizontal interpolating sector 33 horizontally interpolates pixels of the blocks outputted from the bordering sector 32. A vertical interpolating sector 34 vertically interpolates pixels of the blocks outputted from the horizontal interpolating sector 33.

[0043]Binary picture information of an object is divided into blocks of a given size in the block dividing sector 31. These blocks are bordered with columns and rows of blocks adjacent to its left, upper and upper-left sides in the bordering sector 32. In an inter...

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Abstract

A context probable table of context template is employed in order to interpolate binary picture information. The context template for respective pixels making up the binary picture information is made, and probabilities for the interior of an object and the exterior of the object on its context indexes are obtained from the context probable table arranged previously. The probabilities for the interior and exterior of the object are compared with each other and the binary picture information is interpolated with a value having more probability.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an interpolation of binary pictures, and more particularly, to an apparatus and method for interpolating binary picture information based on a context probable table, namely, by employing a context probable value of a context based-arithmetic encoding.[0003]2. Discussion of Related Art[0004]There is some difference between an original picture and a picture down-sampled and up-sampled after the down-sampling in case that the binary picture information is down sampled and then up sampled in performing a loss coding for picture information for the sake of a compression of binary picture information. Thus, in a process of the loss coding a picture of down-sampled small size is coded and a decoder decodes the picture of the small size to thereby perform an up-sampling for the picture in an original size. The loss coding is executed like this through the down and up sampling process. In the up...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06K9/32G06K9/36G06T5/00G06F17/17G06T3/40H04N1/393H04N1/411
CPCG06T3/4007H04N21/23412H04N21/2365
Inventor KIM, JONG-DEUKKIM, HAE-KWANGMOON, JOO-HEE
Owner PANTECH CO LTD
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