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There are three simple spatial transformations: translation, ______ and scaling.

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The （）can be used to locate the centers of thick edge.

A. sign of the second derivative
B. sign of the first derivative
C. zero-crossing property of the second derivative
D. magnitude of the first derivative

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( ) is the process of reducing the amount of data required to represent a given quantity of information.

A. Digitizing
B. Data compression
C. Quantization
D. Image segmentation

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The ( ) of a color refers to which spectral wavelength it most closely matches.

A. hue
B. saturation
C. intensity
D. red

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The mask [-1,0,1;-2,0,2;-1,0,1] can be used to detect the ( ) edge.

A. horizontal
B. 45º
C. vetical
D. 135º

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There are three simple spatial transformations: translation, ______ and scaling.

The （ ）can be used to locate the centers of thick edge.

( ) is the process of reducing the amount of data required to represent a given quantity of information.

The ( ) of a color refers to which spectral wavelength it most closely matches.

The mask [-1,0,1;-2,0,2;-1,0,1] can be used to detect the ( ) edge.

The （）can be used to locate the centers of thick edge.