Digital Image Processing I Quiz

Who developed the Fourier transform theory to model heat-flow problems?

• Michael Fourier

• William Fourier

• Joseph Smith

• Joseph Fourier

What is the basis for approximating a square wave as the sum of sine waves?

• Cosine waves

• Tangent waves

• Secant waves

• Sine waves

What is the purpose of shifting the center of the Fourier Transform to (M/2,N/2) by multiplying the input image by (-1)^x+y?

• To center the low frequency components

• To sharpen the image

• To blur the image

• To enhance the image quality

What type of content in the Fourier Transform is responsible for the general gray-level appearance of an image?

• No frequency components

• Mid frequency components

• Low frequency components

• High frequency components

How is blurring (smoothing) achieved in Frequency Domain Filtering?

• By attenuating low frequency components

• By attenuating high frequency components

• By enhancing high frequency components

• By enhancing low frequency components