Device for and method of coding/decoding image information
First Claim
1. A device for coding image information, which is a shape encoder for splitting an image transferred from an image input unit into an object image and a background image that have predetermined shape information, said predetermined shape information depending upon whether said object image and said background image contains an interior block, an exterior block, or a boundary block:
- the device for coding image information, comprising;
a boundary block merge section for merging boundary blocks including both the object and the background images out of shape information received, by using a boundary block merge technique, said boundary block merge section outputting merged boundary blocks;
a variable length coding section for variable-length-coding the merged boundary blocks received from the boundary block merge section; and
a variable length coding table memory for storing variable length coding tables which are used when the merged boundary blocks are variable-length-coded by the variable length coding section.
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Accused Products
Abstract
A device for coding image information, which is a shape encoder for splitting an image transferred from an image input into an object image and a background image that have predetermined shape information, includes: a boundary block merge block for merging boundary blocks including both the object and background images out of shape information received, by using a boundary block merge technique; a variable length coding block for variable-length-coding the merged boundary blocks received from the boundary block merge block; and a variable length coding table memory for storing variable length coding tables which are used when the merged boundary blocks are variable-length-coded by the variable length coding block.
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Citations
18 Claims
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1. A device for coding image information, which is a shape encoder for splitting an image transferred from an image input unit into an object image and a background image that have predetermined shape information, said predetermined shape information depending upon whether said object image and said background image contains an interior block, an exterior block, or a boundary block:
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the device for coding image information, comprising;
a boundary block merge section for merging boundary blocks including both the object and the background images out of shape information received, by using a boundary block merge technique, said boundary block merge section outputting merged boundary blocks;
a variable length coding section for variable-length-coding the merged boundary blocks received from the boundary block merge section; and
a variable length coding table memory for storing variable length coding tables which are used when the merged boundary blocks are variable-length-coded by the variable length coding section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of coding information, which is a shape encoding accomplished by splitting an image transferred from an image input into an object image and a background image that have predetermined shape information, said predetermined shape information depending upon whether said object image and said background image contains an interior block, an exterior block, or a boundary block, the method of coding image information, comprising the steps of:
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receiving a plurality of boundary blocks, wherein said boundary blocks comprise object and background images;
merging said boundary blocks, including both the object and background images, out of shape information received, by using a boundary block merge technique; and
performing a variable length coding according to the result of said merging step. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
the variable length coding tables have bits that are gradually increased in number with less frequency of occurrence for each arrangement characteristic according to the arrangement characteristics of the object blocks.
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Specification