1. A method for setting a motion vector of a digital video comprising:
calculating a final motion vector allocated to a resolution-reduced macroblock using two motion vectors having a highest correlation among each other out of motion vectors of four adjacent macroblocks.
2. The method of claim 1, further comprising:
calculating the correlation among two motion vectors using the following equation:
D
\u2061
(
i
,
j
)
=
arg
\u2062
\u2003
\u2062
min
i
\u2260
j
\u2062
(
\uf603
mx
i
–
mx
j
\uf604
+
\uf603
my
i
–
my
j
\uf604
)
where i,j=1, 2, 3, 4 (i\u2260j), and mxi, myi, are values of horizontal and vertical components of the motion vectors.
3. The method of claim 2, wherein the lower a result of the equation, the higher the correlation is between the two motion vectors.
4. The method of claim 1, wherein calculating the final motion vector further comprises:
obtaining an average value of the two motion vectors having the highest correlation among each other.
5. The method of claim 4, wherein the final motion vector is calculated using the following equation:
mv
=
mv
\u2032
2
,
where mv\u2032 is the average value of the two motion vectors.
6. A method for setting a motion vector of a digital video having a plurality of macroblocks, comprising:
selecting two motion vectors that have a highest correlation among each other from motion vectors of four adjacent macroblocks; and
calculating a final motion vector to be allocated to one resolution-reduced macroblock using the selected two motion vectors.
7. The method of claim 6, further comprising:
refining the final motion vector to be allocated to the resolution-reduced macroblock.
8. The method of claim 7, further comprising:
setting, by a user, a region of video to be refined.
9. The method of claim 6, wherein a resolution of the digital video is reduced in half.
10. The method of claim 6, wherein the correlation is calculated using the following equation:
D
\u2061
(
i
,
j
)
=
arg
\u2062
\u2003
\u2062
min
i
\u2260
j
\u2062
(
\uf603
mx
i
–
mx
j
\uf604
+
\uf603
my
i
–
my
j
\uf604
)
where i,j=1, 2, 3, 4 (i\u2260j), and mxi, myi are values of horizontal and vertical components of the motion vectors mvi.
11. The method of claim 10, wherein the lower a result of the equation, the higher the correlation is.
12. The method of claim 6, wherein calculating the final motion vector comprises:
obtaining an average value of the two motion vectors having the highest correlation among each other; and
obtaining a final motion vector to be allocated to the resolution-reduced macroblock using the average value.
13. The method of claim 12, wherein obtaining the final motion vector is calculated by dividing the average value by 2.
14. A method for setting a motion vector of digital video, comprising:
calculating a correlation between two motion vectors of a plurality of motion vectors of four adjacent macroblocks;
selecting two motion vectors having a highest correlation among each other;
calculating an average value of the selected two motion vectors; and
calculating a final motion vector to be allocated to a resolution-reduced macroblock based on the average value.
15. The method of claim 14, further comprising:
refining the final motion vector to be allocated to the resolution-reduced macroblock.
16. The method of claim 14, wherein the correlation is calculated using the following equation:
D
\u2061
(
i
,
j
)
=
arg
\u2062
\u2003
\u2062
min
i
\u2260
j
\u2062
(
\uf603
mx
i
–
mx
j
\uf604
+
\uf603
my
i
–
my
j
\uf604
)
wherein i,j=1, 2, 3, 4 (i\u2260j), and mxi, myi are values of horizontal and vertical components of the motion vectors mvi.
17. The method of claim 16, wherein the lower a result of the equation, the higher the correlation is.
18. The method of claim 14, wherein the final motion vector is calculated using the following equation:
mv
=
mv
2
where mv\u2032 is the average value of the two motion vectors.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A personal care article comprising:
(i) a cleansing composition comprising a lathering surfactant present in a sufficient amount to generate a foam;
(ii) a water absorbent material with capacity to attract at least ten times as much water as weight of the material in a dried state; and
(iii) a water insoluble sachet having at least one water permeable wall and housing therein the cleansing composition and absorbent material.
2. The article according to claim 1 wherein the water absorbent material is selected from the group consisting of crosslinked polyacrylate, crosslinked polyacrylamide and starch-graft-poly(acrylate-co-acrylamide).
3. The article according to claim 1 wherein the lathering surfactant is present in an amount from about 0.5 to about 60% by weight of the cleansing composition.
4. The article according to claim 1 wherein the lathering surfactant is an anionic surfactant.
5. The article according to claim 1 wherein the amount of cleansing composition and absorbent material relative to the substrate ranges from about 20:1 to about 1:20.
6. The article according to claim 1 wherein the cleansing composition further comprises from about 1% to about 80% of a bicarbonate salt and from about 0.5 to about 80% of an acid material.
7. The article according to claim 1 wherein the cleansing composition further comprises from about 0.1 to about 35% of an emollient by weight of the cleansing composition.
8. The article according to claim 7 wherein the emollient is selected from the group consisting of natural or synthetic esters, silicone oils, hydrocarbons, fatty acids and mixtures thereof.
9. The article according to claim 1 wherein the water absorbent material has a capacity to attract at least twenty times as much water as weight of the material in a dried state.
10. The article according to claim 1 which generates at least 5 ml average lather volume in a Lather Volume Test.
11. A personal cleansing article in the form of a sachet filled with an expanded gel formed from a water absorbing material capable of combining with at least ten times its weight of water and exuding foamed lather.