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A smoothing filter in the Frequency domain has size MxN, but its equivalent Spatial domain representation has a much smaller size of wxh. Why is it so?

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Fahmida Tasnim Lisa
关闭： MATLAB Answer Bot 2021-8-20
A smoothing filter in the Frequency domain has size MxN, but its equivalent Spatial domain representation has a much smaller size of wxh. Why is it so?

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