| 摘要 |
A method of rate control for one or more images transformed is disclosed. The method is to obtain transform coefficients, which are partitioned into coding units that are each coded in a plurality of quality increments having respective significance values. The method comprises: defining a first subset and a second subset as collections of coding units that include different collections of coding units, at least one of the first or second subsets including two or more coding units and at least one image contributing one or more coding units to each of the subsets; setting a list of requirements (LOR) for the subsets, which includes a first size requirement for the first subset and a second size requirement for the second subset, the first and second size requirements being different; using the significance values to select with a rate controller quality increments the first size requirement for the first subset and the second size requirement for the second subset; and constructing an admissible codestream for the one or more of the images from the selected quality increments. |
