Q. Which of the following is/are considered as type(s) of lowpass filters?

View solution

Q. Which of the following lowpass filters is/are covers the range of very sharp filter function?

View solution

Q. Which of the following lowpass filters is/are covers the range of very smooth filter function?

View solution

Q. Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is very high, the filter approaches to which of the following filter(s)?

View solution

Q. Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is of lower order, the filter approaches to which of the following filter(s)?

View solution

Q. In a filter, all the frequencies inside a circle of radius D0 are not attenuated while all frequencies outside circle are completely attenuated. The D0 is the specified nonnegative distance from origin of the Fourier transform. Which of the following filter(s) characterizes the same?

View solution

Q. In an ideal lowpass filter case, what is the relation between the filter radius and the blurring effect caused because of the filter?

View solution

Q. The characteristics of the lowpass filter h(x, y) is/are_________

View solution

Q. What is the relation for the components of ideal lowpass filter and the image enhancement?

View solution

Q. Using the feature of reciprocal relationship of filter in spatial domain and corresponding filter in frequency domain along with convolution, which of the following fact is true?

View solution

Q. State the statement true or false: “BLPF has sharp discontinuity and ILPF doesn’t, and so ILPF establishes a clear cutoff b/w passed and filtered frequencies”.

View solution

Q. A Butterworth filter of what order has no ringing?

View solution

Q. In frequency domain terminology, which of the following is defined as “obtaining a highpass filtered image by subtracting from the given image a lowpass filtered version of itself”?

View solution

Q. Which of the following is/ are a generalized form of unsharp masking?

View solution

Q. High boost filtered image is expressed as: fhb = A f(x, y) – flp(x, y), where f(x, y) the input image, A is a constant and flp(x, y) is the lowpass filtered version of f(x, y). Which of the following fact validates if A=1?

View solution

Q. High boost filtered image is expressed as: fhb = A f(x, y) – flp(x, y), where f(x, y) the input image, A is a constant and flp(x, y) is the lowpass filtered version of f(x, y). Which of the following fact(s) validates if A increases past 1?

View solution

Q. Unsharp masking can be implemented directly in frequency domain by using a filter: Hhp(u, v) = 1 – Hlp(u, v), where Hlp(u, v) the transfer function of a lowpass filter. What kind of filter is Hhp(u, v)?

View solution

Q. The frequency domain Laplacian is closer to which of the following mask?

View solution

Q. To accentuate the contribution to enhancement made by high-frequency components, which of the following method(s) should be more appropriate to apply?

View solution

Q. A process that accentuate the contribution to enhancement made by high-frequency components, by multiplying the highpass filter by a constant and adding an offset to the highpass filter to prevent eliminating zero frequency term by filter is known as _______

View solution