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US 6,188,726 B1Granted
Coding/decoding apparatus
AssigneeCanon Kabushiki Kaisha
InventorYasuji Hirabayashi
Life of this patent
Estimating the term…
Abstract
A coding apparatus is arranged to eliminate predetermined image data from input image data and code the input image data from which the predetermined image data is eliminated. A decoding apparatus is arranged to decode the coded image data from which the predetermined image data is eliminated and combine desired image data with the decoded image data.
Claims13
A coding apparatus comprising:
- a) input means for inputting independent background image data corresponding to a predetermined background image and image data obtained by picking up an object with the predetermined background image;
- b) extracting means for extracting object image data corresponding to the object portion from the image data by using independent background image data;
- and
- c) coding means for motion compensation interpicture coding the object image data extracted by said extracting means, wherein the motion compensation interpicture coding performs motion compensation between the object image data of a present picture and the object image data of a picture other than the present picture.
1 more element
A decoding apparatus comprising:
- a) input means for inputting coded image data, which have been obtained by extracting object image data from image data and coding the extracted object image data by motion compensation interpicture coding, which performs motion compensation between the object image data of a present picture, and the object image data of a picture other than the present picture,
- the image data being data obtained by picking up an object with a predetermined background image, and the object image data being extracted from the image data by using an independent background image data corresponding to the predetermined background image obtained prior to the extraction process;
- and
- b) decoding means for decoding the image data inputted by said input means.
1 more element
A method for coding comprising the steps of:
- a) inputting independent background image data corresponding to a predetermined background image and image data obtained by picking up an object with the predetermined background image;
- b) extracting object image data corresponding to the objection portion from the image data by using independent background image data;
- and
- c) motion compensation interpicture coding the object image data extracted by said extracting step, wherein the motion compensation interpicture coding performs motion compensation between the object image data of a present picture and the object image data of a picture other than the present picture.
1 more element
A method for decoding comprising the steps of:
- a) inputting coded image data, which have been obtained by extracting object image data from image data and coding the extracted object image data by motion compensation interpicture coding, which performs motion compensation between the object image data of a present picture, and the object image data of a picture other than the present picture,
- the image data being data obtained by picking up an object with a predetermined background image, and the object image data being extracted from the image data by using an independent background image data corresponding to the predetermined background image obtained prior to the extraction process;
- and
- b) decoding the image data inputted in said input step.
1 more element
Dependencies are inferred from the claim text.