题目内容

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

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

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

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

If an gray level image with size 1024 × 1024 is evenly distributed, and it’s gray scale is between [0，255]. Then the amount of data to store it is ( ) KB.

A. 256
B. 512
C. 1024
D. 8192