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The domain that refers to image plane itself and the domain that refers to Fourier transform of an image is/are :

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The domain that refers to image plane itself and the domain that refers to Fourier transform of an image is/are :

(a) Spatial domain in both

(b) Frequency domain in both

(c) Spatial domain and Frequency domain respectively

(d) Frequency domain and Spatial domain respectively

The question was asked in unit test.

The origin of the question is Relationship between Pixels and Image Enhancement Basics in section Image Enhancement of Digital Image Processing

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The correct answer is (c) Spatial domain and Frequency domain respectively

To elaborate: Spatial domain itself refers to the image plane, and approaches in this category are based on direct manipulation of pixels in an image.

Techniques based on Frequency domain processing are based on modifying the Fourier transform of an image.

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