Method and apparatus for determining motion compensation mode
First Claim
1. A method for determining moving compensation (MC) mode, comprising:
- (a) receiving as inputs a forward frame sum of absolute difference (SAD), a sum of a forward top field SAD and a forward bottom field SAD, a backward frame SAD, and a sum of a backward top field SAD and a backward bottom field SAD;
(b) identifying a minimum value of the inputs received in step (a);
(c) if the minimum value is smaller than a predetermined threshold value, selecting an MC mode corresponding to the minimum value; and
(d) if the minimum value is not smaller than the predetermined threshold value, selecting one of an interpolative field MC mode and an interpolative frame MC mode.
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Abstract
A method and apparatus for determining motion compensation (MC) which estimates an interpolative MC mode by a forward and backward MC are provided. The method includes: (a) receiving as inputs a forward frame sum of absolute difference (SAD), a sum of a forward top field SAD and a forward bottom field SAD, a backward frame SAD, and a sum of a backward top field SAD and a backward bottom field SAD; (b) identifying a minimum value among the inputs received in step (a); (c) if the minimum value is smaller than a predetermined threshold value, selecting an MC mode corresponding to the minimum value; and (d) if the minimum value is not smaller than the predetermined threshold value, selecting one of an interpolative field MC mode and an interpolative frame MC mode.
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Citations
13 Claims
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1. A method for determining moving compensation (MC) mode, comprising:
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(a) receiving as inputs a forward frame sum of absolute difference (SAD), a sum of a forward top field SAD and a forward bottom field SAD, a backward frame SAD, and a sum of a backward top field SAD and a backward bottom field SAD;
(b) identifying a minimum value of the inputs received in step (a);
(c) if the minimum value is smaller than a predetermined threshold value, selecting an MC mode corresponding to the minimum value; and
(d) if the minimum value is not smaller than the predetermined threshold value, selecting one of an interpolative field MC mode and an interpolative frame MC mode. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for determining an MC mode, comprising:
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a SAD receiving unit which receives as inputs a forward frame SAD, a sum of a forward top field SAD and a forward bottom field SAD, a backward frame SAD, and a sum of a backward top field SAD and a backward bottom field SAD;
a minimum value judgment unit which identifies a minimum value of the inputs received by the SAD receiving unit;
a first selection unit which selects an MC mode corresponding to the minimum value if the minimum value is smaller than a predetermined threshold value; and
a second selection unit which, if the minimum value is not smaller than the predetermined threshold value, selects one of an interpolative field MC mode and an interpolative frame MC mode. - View Dependent Claims (7, 8, 9, 10)
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11. A picture encoding apparatus comprising:
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a forward SAD calculation unit which calculates a forward frame SAD, a forward top field SAD, and a forward bottom field SAD;
a backward SAD calculation unit which calculates a backward frame SAD, a backward top field SAD, and a backward bottom field SAD; and
an MC mode determination unit which receives the SADs as inputs. - View Dependent Claims (12)
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13. A computer readable medium recording a program for executing a method of determining an MC mode in a general-purpose computer, the method comprising:
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(a) receiving as inputs a forward frame sum of absolute difference (SAD), a sum of a forward top field SAD and a forward bottom field SAD, a backward frame SAD, and a sum of a backward top field SAD and a backward bottom field SAD;
(b) identifying a minimum value of the inputs received in step (a);
(c) if the minimum value is smaller than a predetermined threshold value, selecting an MC mode corresponding to the minimum value; and
(d) if the minimum value is not smaller than the predetermined threshold value, selecting one of an interpolative field MC mode and an interpolative frame MC mode.
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Specification