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5.1ๅ›พๅƒ้€€ๅŒ–/ๅคๅŽŸ่ฟ‡็จ‹็š„ๆจกๅž‹ g(x,y)=f(x,y)h(x,y)+n(x,y) G(u,)=F(u,)H(u,)+N(u,) h(x,y) f(x,y) g(x,y) DFT DFT DFT F(u,v) H(u,v) G(u,) g(๐‘ฅ, ๐‘ฆ) = ๐‘“(๐‘ฅ, ๐‘ฆ)๏ƒชโ„Ž(๐‘ฅ, ๐‘ฆ) + ๐œ‚(๐‘ฅ, ๐‘ฆ) ๐บ(๐‘ข, ๐‘ฃ) = ๐น(๐‘ข, ๐‘ฃ)๐ป ๐‘ข, ๐‘ฃ + ๐‘(๐‘ข, ๐‘ฃ) 5.1 ๅ›พๅƒ้€€ๅŒ–/ๅคๅŽŸ่ฟ‡็จ‹็š„ๆจกๅž‹ ๏ƒช = × = DFT DFT DFT ๐’‡(๐’™, ๐’š) ๐‘ญ(๐’–, ๐’—) ๐’‰(๐’™, ๐’š) ๐‘ฏ(๐’–, ๐’—) g(๐’™, ๐’š) ๐‘ฎ(๐’–, ๐’—)
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