| 摘要 |
The image coding apparatus comprises: a decoding unit 102 which decodes first coded data to generate a decoded picture and decoding information containing motion vectors; a coding unit 104 which codes, in a second coding scheme, the decoded picture generated by the decoding unit 102, to generate second coded data including a coded picture and coding information containing motion vectors; a basic motion information generating unit 105 which generates basic motion information from either the decoding information or the coding information, wherein the coding unit 104 determines a search range for estimating motion vectors of the decoded picture, according to the basic motion information generated by the basic motion information generating unit 105, estimates motion vectors of the decoded picture in the determined is search range, and generates the second coded data including the coded picture and coding information containing the estimated motion vectors.
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