题目内容

Which one belongs to point operations?

A. direct gray scale transform
B. sobel operators
C. fourier transform
D. median filters

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For the smoothing filters in spatial domain, which of the following statements is true?

A. The principle is mask convolution.
B. The sign of each coefficient of the mask is positive.
C. The sum of all coefficients of the mask is 0.
D. The function is to denoise image.

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If the gray levels of an image are coded in a way that uses more code symbols than absolutely necessary to represent each gray level, the resulting image is said to contain （）.

A. spatial redundancy
B. code redundancy
C. interpixel redundancy
D. psychovisually redundancy

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The mapping relationship between images and gray-level histograms is （ ).

A. one to one
B. many to one
C. one to many
D. none of them

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为什么数字图像处理的学科发展离不开计算机的发展？

A. 数字图像要求大的存储空间(to store)
B. 数字图像处理要求大量计算(to compute)
C. 数字图像要用计算机来获取(to acquire)
D. 数字图像要用计算机来显示(to display)

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Which one belongs to point operations?

A. direct gray scale transform B. sobel operators C. fourier transform D. median filters

For the smoothing filters in spatial domain, which of the following statements is true?

If the gray levels of an image are coded in a way that uses more code symbols than absolutely necessary to represent each gray level, the resulting image is said to contain （ ）.

The mapping relationship between images and gray-level histograms is （ ).

为什么数字图像处理的学科发展离不开计算机的发展？

A. direct gray scale transform
B. sobel operators
C. fourier transform
D. median filters

If the gray levels of an image are coded in a way that uses more code symbols than absolutely necessary to represent each gray level, the resulting image is said to contain （）.