What condition prevents the intensity artifacts to be created while processing with contrast stretching, if r and s are gray-values of image before and after processing respectively?

A contrast stretching result been obtained by setting (r1, s1) = (rmin, 0) and (r2, s2) = (rmax, L – 1), where, r and s are gray-values of image before and after processing respectively, L is the max gray value allowed and rmax and rmin are maximum and minimum gray-values in image respectively. What should we term the transformation function if r1 = r2 = m, some mean gray-value.

A

Linear function

B

Thresholding function

C

Intermediate function

D

None of the mentioned

When is the contrast stretching transformation a linear function, for r and s as gray-value of image before and after processing respectively?

A

r1 = s1 and r2 = s2

B

r1 = r2, s1 = 0 and s2 = L – 1, L is the max gray value allowed

C

r1 = 1 and r2 = 0

D

None of the mentioned

When is the contrast stretching transformation a thresholding function, for r and s as gray-value of image before and after processing respectively?

A

r1 = s1 and r2 = s2

B

r1 = r2, s1 = 0 and s2 = L – 1, L is the max gray value allowed

C

r1 = 1 and r2 = 0

D

None of the mentioned

The IR stretching frequencies (cm^-1) for the compound X are as follows: 3300-3500 (s, br); 3000 (m); 2225 (s); 1680 (s).
Basics of Organic Reaction Mechanism mcq question image

Basics of Organic Reaction Mechanism mcq question image

The correct assignment of the absorption bands is

A

\ = 3300-3500; \ = 3000; \ = 2225; \ = 1680

B

\ = 3000; \ = 3300-3500; \ = 2225; \ = 1680

C

\ = 3300-3500; \ = 3000; \ = 1680; \ = 2225

D

\ = 3000; \ = 3300-3500; \ = 1680; \ = 2225

Let x(t) and y(t) (with Fourier transforms X(f) and Y(f) respectively) be related as shown in the figure. Then Y(f) is
Signal Processing mcq question image

A

$$ - \frac{1}{2}X\left( {\frac{f}{2}} \right){e^{ - j2\pi f}}$$

B

$$ - \frac{1}{2}X\left( {\frac{f}{2}} \right){e^{j2\pi f}}$$

C

$$ - X\left( {\frac{f}{2}} \right){e^{j2\pi f}}$$

D

$$ - X\left( {\frac{f}{2}} \right){e^{ - j2\pi f}}$$

The impulse response and the excitation function of a linear time invariant causal system are shown in figure (a) and (b) respectively. The output of the system at t = 2 sec is equal to
Signal Processing mcq question image

A

0

B

$$\frac{1}{2}$$

C

$$\frac{3}{2}$$

D

1

One period (0, T) each of two periodic waveforms W₁ and W₂ are shown in the figure. The magnitudes of the nth Fourier series coefficients of W₁ and W₂, for n ≥ 1, n is odd, are respectively proportional to
Signal Processing mcq question image

A

|n|^-3 and |n|^-2

B

|n|^-1 and |n|^-3

C

|n|^-1 and |n|^-2

D

|n|^-4 and |n|^-2

The function x(t) is shown in the figure. Even and odd parts of a unit-step function u(t) are respectively,
Signal Processing mcq question image

A

$$\frac{1}{2},\frac{1}{2}x\left( t \right)$$

B

$$ - \frac{1}{2},\frac{1}{2}x\left( t \right)$$

C

$$\frac{1}{2}, - \frac{1}{2}x\left( t \right)$$

D

$$ - \frac{1}{2}, - \frac{1}{2}x\left( t \right)$$

Directions : In each of the following questions a statement is given, followed by three conclusions. Give answer :

Statement : The economic condition continues to be critical even after a good harvest season.

Assumptions :
I. The economic condition was not critical before the harvest season.
II. The economic condition could not have improved without a good harvest season.
III. The economic condition was expected to improve after a good harvest season.

A

Only I and II are implicit

B

Only II is implicit

C

Only II and III are implicit

D

Only III is implicit

E

Only I and III are implicit

With the display intensity corresponding to a given color index ci calculated as b) Intensity=0.5 c) Intensity=0.5 d) Intensity=0.5

A

Intensity=0.5

B

max(r, g, [+ max(r, g, [

C

max(r, g, b)+ max(r, g, b)

D

max(r, g, b)+ max(r, g, b)

What condition prevents the intensity artifacts to be created while processing with contrast stretching, if r and s are gray-values of image before and after processing respectively?

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