# Image Processing MCQ

Question 1 : When the human eye does not respond with equal sensitivity to all visual information

1. Spatial redundancy
2. Psychovisual redundancy
3. Coding redundancy
4. Temporal redundancy

Question 2 : Structuring element runs over image's

1. rows
2. columns
3. edges
4. every element

Question 3 : All the pixels at Euclidean distance of r from given pixel P form

1. A circle centered at P
2. A square centered at P
3. A triangle centered at P
4. A rectangle centered at P

Question 4 : DIT-FFT stands for

1. Discrete In Time Fast Fourier Transform
2. Decompose In Time Fast Fourier Transform
3. Divide In Time Fast Fourier Transform
4. Decimation In Time Fast Fourier Transform

Question 5 : Given image ‘I’ and structuring element ‘s’ , boundary (I) given as

1. I – (I ө s)
2. I + (I ө s)
3. (I ө s) - I
4. (I ө s) + I

Question 6 : Which of the following techniques is based on the Fourier transform?

1. spectral
2. topological
3. statistical
4. structural

Question 7 : Given A={(1,0), (1,1), (1,2), (0,3), (1,3), (2,3), (3,3), (1,4)} and B={(0,0), (1,0)} Result of A eroded B will be

1. {(0,3), (1,3), (2,3)}
2. {(1,3), (2,3), (3,3)}
3. {(0,0), (1,3), (2,3)}
4. {(0,3), (2,3), (3,3)}

Question 8 : What is the effect of equalizing an already equalized histogram?

1. Number grey levels reduced
2. No Change on histogram
3. Number grey levels increased
4. New grey levels gets added

Question 9 : The basic idea behind Huffman coding is to

1. compress data by using fewer bits to encode more frequently occuring pixels
2. expand data by using fewer bits to encode more frequently occuring pixels
3. compress data by using fewer bits to encode fewer frequently occuring pixels
4. compress data by using more bits to encode more frequently occuring pixels

Question 10 : Example of an isotropic filter is

1. Robert
2. Sobel
3. Laplacian
4. Prewitt

Question 11 : On decompression of file, which technique retrieved exact image without any loss of information

1. Huffman coding
2. Improved grey scale quantization
3. JPEG
4. Vector quantization

Question 12 : If pixels are reconstructed without error_it is called _____________compression

1. coordinates wise
2. non-reversible
3. reversible
4. pixel wise

Question 13 : Thresholding function in contrast stretching creates

1. binary image
2. high quality image
3. enhanced image
4. low quality image

Question 14 : Fully containment of the Structuring element in an image is required in

1. opening
2. closing
3. erosion
4. dilation

Question 15 : Wavelet series equation is the sum of _________________

1. scaling and detail
2. row and col inverse
3. spatial and frequency mean
4. row andsummation detail along column

Question 16 : Structuring element is also called

1. pixels
2. lines
3. subimage
4. noise

Question 17 : If component of histogram are concentrated on the lower (towards zero) side of the gray scale then it is a histogram of

1. Dark Image
2. Bright Image
3. Low constrast image
4. High constrast image

Question 18 : In neighborhood operation for spatial filtering if a square mask of size n*n is used it is restricted that the center of mask must be at a distance ≥ (n – 1)/2 pixels from border of image, what happens to the resultant image?

1. The resultant image will be of same size as original image
2. The resultant image will be a little larger size than original image
3. The resultant image will be a little smaller size than original image
4. The resultant image will be smooth near the border

Question 19 : Given two pixels P(5,2) and Q(4,7), the D4 distance between them is

1. 5
2. 6
3. 5.099
4. 1

Question 20 : The transform which possess the multi-resolution property in an image is:

1. Fast Fourier Transform (FFT)
2. Discrete Cosine Transform (DCT)
3. Short Term Fourier Transform (STFT)
4. Wavelet Transform

Question 21 : The D8 distance is also called

1. Manhattan distance
2. City block distance
3. Chessboard distance
4. Euclidean distance

Question 22 : The error in the image due to low tonal resolution is called

1. Checker board effect
2. False contouring
3. Quantization error
4. Blurring effect

Question 23 : Which one of the following is not a limitation of the basic high pass filter

1. It may produce negative response
2. It may produce response greater than L-1
3. It destroys all the constant gray level regions
4. It generates blurring effect

Question 24 : Method generating a processed image having specified histogram is called

1. histogram enhancement
2. histogram normalization
3. histogram equalization
4. histogram matching

Question 25 : Choose lossless statistical method example

1. Run length encoding
2. Huffman Encoding
3. Jpeg
4. Improved Gray Scale Quantization

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