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This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Image Processing knowledge and support exam preparation. Choose a topic below to get started.
1. |
In digital image of M rows and N columns and L discrete gray levels, calculate the bits required to store a digitized image for M=N=32 and L=16. |
A. | 16384 |
B. | 4096 |
C. | 8192 |
D. | 512 |
Answer» C. 8192 | |
2. |
Validate the statement “When in an Image an appreciable number of pixels exhibit high dynamic range, the image will have high contrast.” |
A. | True |
B. | False |
Answer» B. False | |
3. |
An image whose gray-levels span a significant portion of gray scale have __________ dynamic range while an image with dull, washed out gray look have __________ dynamic range. |
A. | Low and High respectively |
B. | High and Low respectively |
C. | Both have High dynamic range, irrespective of gray levels span significance on gray scale |
D. | Both have Low dynamic range, irrespective of gray levels span significance on gray scale |
Answer» C. Both have High dynamic range, irrespective of gray levels span significance on gray scale | |
4. |
After digitization process a digital image with M rows and N columns have to be positive and for the number, L, max gray levels i.e. an integer power of 2 for each pixel. Then, the number b, of bits required to store a digitized image is: |
A. | b=M*N*k |
B. | b=M*N*L |
C. | b=M*L*k |
D. | b=L*N*k |
Answer» B. b=M*N*L | |
5. |
AN_IMAGE_WHOSE_GRAY-LEVELS_SPAN_A_SIGNIFICANT_PORTION_OF_GRAY_SCALE_HAVE____________DYNAMIC_RANGE_WHILE_AN_IMAGE_WITH_DULL,_WASHED_OUT_GRAY_LOOK_HAVE____________DYNAMIC_RANGE.?$ |
A. | Low and High respectively |
B. | High and Low respectively |
C. | Both have High dynamic range, irrespective of gray levels span significance on gray scale |
D. | Both have Low dynamic range, irrespective of gray levels span significance on gray scale |
Answer» C. Both have High dynamic range, irrespective of gray levels span significance on gray scale | |
6. |
In digital image of M rows and N columns and L discrete gray levels, calculate the bits required to store a digitized image for M=N=32 and L=16.$ |
A. | 16384 |
B. | 4096 |
C. | 8192 |
D. | 512 |
Answer» C. 8192 | |
7. |
Validate_the_statement_“When_in_an_Image_an_appreciable_number_of_pixels_exhibit_high_dynamic_range,_the_image_will_have_high_contrast.”$# |
A. | True |
B. | False |
Answer» B. False | |
8. |
After digitization process a digital image with M rows and N columns have to be positive and for the number, L, max gray levels i.e. an integer power of 2 for each pixel. Then, the number b, of bits required to store a digitized image is? |
A. | b=M*N*k |
B. | b=M*N*L |
C. | b=M*L*k |
D. | b=L*N*k |
Answer» B. b=M*N*L | |
9. |
The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of max gray levels is an integer power of 2 i.e. L = 2k, allowed for each pixel. If we assume that the discrete levels are equally spaced and that they are integers then they are in the interval __________ and Sometimes the range of values spanned by the gray scale is called the ________ of an image. |
A. | [0, L – 1] and static range respectively |
B. | [0, L / 2] and dynamic range respectively |
C. | [0, L / 2] and static range respectively |
D. | [0, L – 1] and dynamic range respectively |
Answer» E. | |
10. |
The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of max gray levels. There are no requirements on M and N, other than that M and N have to be positive integer. However, the number of gray levels typically is |
A. | An integer power of 2 i.e. L = 2k |
B. | A Real power of 2 i.e. L = 2k |
C. | Two times the integer value i.e. L = 2k |
D. | None of the mentioned |
Answer» B. A Real power of 2 i.e. L = 2k | |
11. |
The digitization process i.e. the digital image has M rows and N columns, requires decisions about values for M, N, and for the number, L, of gray levels allowed for each pixel. The value M and N have to be: |
A. | M and N have to be positive integer |
B. | M and N have to be negative integer |
C. | M have to be negative and N have to be positive integer |
D. | M have to be positive and N have to be negative integer |
Answer» B. M and N have to be negative integer | |
12. |
Let Z be the set of real integers and R the set of real numbers. The sampling process may be viewed as partitioning the x-y plane into a grid, with the central coordinates of each grid being from the Cartesian product Z2, that is a set of all ordered pairs (zi, zj), with zi and zj being integers from Z. Then, f(x, y) is a digital image if (x, y) are integers from Z2 and f is a function that assigns a gray-level value (that is, a real number from the set R) to each distinct coordinate pair (x, y). What happens to the digital image if the gray levels also are integers? |
A. | The Digital image then becomes a 2-D function whose coordinates and amplitude values are integers |
B. | The Digital image then becomes a 1-D function whose coordinates and amplitude values are integers |
C. | The gray level can never be integer |
D. | None of the mentioned |
Answer» B. The Digital image then becomes a 1-D function whose coordinates and amplitude values are integers | |
13. |
Let Z be the set of real integers and R the set of real numbers. The sampling process may be viewed as partitioning the x-y plane into a grid, with the central coordinates of each grid being from the Cartesian product Z2, that is a set of all ordered pairs (zi, zj), with zi and zj being integers from Z. Then, f(x, y) is said a digital image if: |
A. | (x, y) are integers from Z2 and f is a function that assigns a gray-level value (from Z) to each distinct pair of coordinates (x, y) |
B. | (x, y) are integers from R2 and f is a function that assigns a gray-level value (from R) to each distinct pair of coordinates (x, y) |
C. | (x, y) are integers from R2 and f is a function that assigns a gray-level value (from Z) to each distinct pair of coordinates (x, y) |
D. | (x, y) are integers from Z2 and f is a function that assigns a gray-level value (from R) to each distinct pair of coordinates (x, y) |
Answer» E. | |
14. |
The resulting image of sampling and quantization is considered a matrix of real numbers. By what name(s) the element of this matrix array is called __________ |
A. | Image element or Picture element |
B. | Pixel or Pel |
C. | All of the mentioned |
D. | None of the mentioned |
Answer» D. None of the mentioned | |
15. |
Assume that an image f(x, y) is sampled so that the result has M rows and N columns. If the values of the coordinates at the origin are (x, y) = (0, 0), then the notation (0, 1) is used to signify : |
A. | Second sample along first row |
B. | First sample along second row |
C. | First sample along first row |
D. | Second sample along second row |
Answer» B. First sample along second row | |