Resampling??????

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Resampling??????
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Outline

• Resampling????
• ?????
• Nearest-neighbor Interpolation
• Bilinear Interpolation
• Bicubic Interpolation
• ??????

3
Resampling????

• Resampling??????
• ???????(nearest-neighbor interpolation)
• ??????(bilinear interpolation)
• ??????(bicubic interpolation)

4
?????-???????

• ???????(nearest-neighbor interpolation)
• ??
• ????????????,?????????
• ??????????????
• ??
• ??????????????????

5
?????-???????

• ???????????
• ?????????
• ?????????????????
• ?????????

6
?????-??????

• ??????(bilinear interpolation)
• ?????????????????
• ??????????,?????????????
• ??????a?ß??p????????????????
• ?????????1 , ? 0 lt a?ß lt 1

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?????-??????

• ??
• ???????
• ?a ?b???p???,???e???
• ???????
• ?c ?d???p???,???f???
• ???e ?f?????
• ???p???

8
?????-??????

• ??????(bicubic interpolation)
• ?????????,?????????????????

9
?????-??????

• ??
• ????????????Convolution??
• ????
• ??????????????
• ?????????

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??????

• ????
• ???????(nearest-neighbor interpolation) ?
• ??????(bilinear interpolation) ?
• ??????(bicubic interpolation) ?
• ??
• ???????(nearest-neighbor interpolation) ?
• ??????(bilinear interpolation) ?
• ??????(bicubic interpolation) ?