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US 8,150,173 B2Granted
Image coding method and apparatus, and image decoding method and apparatus
AssigneeSanyo Electric Co., Ltd.
InventorsShigeyuki Okada, Kazuhiko Taketa
Life of this patent
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Abstract
In an image coding apparatus, a ROI setting unit sets a ROI region in an image. An entropy coding unit entropy-codes the image. A ROI information coding unit encodes information for specifying the ROI region. A codestream generator generates a codestream in a manner that the coded image and the coded information are explicitly included in the codestream. When a plurality of ROI regions are set in the image, the information may include a degree of priority.
Claims6
An image coding method performed by a processor in accordance with instructions stored in a memory, comprising:
- defining a plurality of regions of interest on a moving image;
- encoding the moving image;
- and
- generating a codestream containing coded data of the moving image, with information for specifying the plurality of regions of interest defined on the moving image being explicitly described in distinction from coded data of the moving image, not as a header for each frame of the moving image, but in the codestream,
- wherein the information for specifying the plurality of regions of interest includes information indicating whether the display of each of the regions of interest is essential,
- wherein if the information indicates a region of interest as not essential, that region of interest is not displayed, and
- wherein the information includes a degree of priority thereof.
4 more elements
An image coding apparatus, comprising:
- a region-of-interest setting unit comprising at least one processor which defines a plurality of regions of interest on a moving image;
- an image coding unit comprising at least one processor which encodes the moving image;
- and
- a codestream generator which generates a codestream containing coded data of the moving image, information for specifying the plurality of regions of interest defined on the moving image being explicitly described in distinction from coded data of the moving image, not as a header for each frame of the moving image, but in the codestream,
- wherein the information for specifying the plurality of regions of interest includes information indicating whether the display of each of the regions of interest is essential,
- wherein if the information indicates a region of interest as not essential, that region of interest is not displayed, and
- wherein when a plurality of regions of interest is defined on the moving image, a degree of priority thereof is included in the information.
4 more elements
Dependencies are inferred from the claim text.