Coded image recording medium
AssigneeHitachi, Ltd.
InventorYuichiro Nakaya
Life of this patent
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Abstract
A recording medium has recorded thereon information related to coded data of an image sequence, which is a set of coded frame information of a plurality of frames of an image sequence. The coded frame information includes information related to a difference image between an image of a current frame and a prediction image of the current frame, the prediction image being synthesized by performing motion compensation, information related to motion vectors estimated in performing the motion compensation, and rounding method information specifying a rounding method used in performing the motion compensation. The rounding method specified by the rounding method information is used for pixel value interpolation in performing the motion compensation, and specifies one of a positive rounding method and a negative rounding method.
Claims6
A recording medium having recorded thereon information related to coded data of an image sequence;
- wherein the information related to coded data of an image sequence is a set of coded frame information of a plurality of frames of an image sequence;
- and
- wherein the coded frame information includes:
- information related to a difference image between an image of a current frame and a prediction image of the current frame, the prediction image being synthesized by performing motion compensation,
- information related to motion vectors estimated in performing the motion compensation, and
- rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation.
A recording medium having recorded thereon information of images which have been coded by performing motion compensation;
- wherein the information includes rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation;
- wherein the rounding method information consists of one bit;
- and
- wherein the rounding method information specifies a positive rounding method when the one bit has a first logical value, and specifies a negative rounding method when the one bit has a second logical value.
A recording medium having recorded thereon information of images which have been coded by performing motion compensation;
- wherein the information includes rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation;
- wherein the rounding method information specifies one of two values;
- and
- wherein one of the two values specifies a positive rounding method, and another one of the two values specifies a negative rounding method.
Dependencies are inferred from the claim text.