1. What does HSV stand for in color space conversion?
(A) Hue Saturation Value
(B) High Saturation Vector
(C) Hue Spectrum Variance
(D) Histogram Saturation Vector
2. Which of the following is not a component of the HSI color space?
(A) Intensity
(B) Hue
(C) Saturation
(D) Value
3. In the HSV model, which component represents the color type?
(A) Hue
(B) Saturation
(C) Value
(D) Intensity
4. In YCbCr, what does the ‘Y’ component represent?
(A) Chrominance blue
(B) Luminance
(C) Chrominance red
(D) Brightness difference
5. Which color space separates intensity from color information?
(A) RGB
(B) HSV
(C) HSI
(D) YCbCr
6. Which of the following color models is most commonly used in image processing for compression?
(A) RGB
(B) HSI
(C) HSV
(D) YCbCr
7. What is the main advantage of converting RGB to HSV?
(A) Reduces image resolution
(B) Allows easier color-based segmentation
(C) Improves contrast
(D) Enhances spatial details
8. Which color space uses cylindrical coordinates?
(A) RGB
(B) HSV
(C) YCbCr
(D) CMY
9. In the RGB color space, each color is a combination of:
(A) Luminance and hue
(B) Red, green, and blue
(C) Saturation and brightness
(D) Chrominance and luminance
10. What is the typical range of the ‘Hue’ component in HSV color space?
(A) 0 to 100
(B) 0 to 1
(C) 0 to 360
(D) -180 to 180
11. Which color space is often used in television broadcasting?
(A) HSV
(B) RGB
(C) YCbCr
(D) CMYK
12. In which color model is Intensity calculated as the average of RGB components?
(A) HSV
(B) HSI
(C) CMY
(D) YCbCr
13. Which of the following components in YCbCr contains most of the image details?
(A) Y
(B) Cb
(C) Cr
(D) Both Cb and Cr
14. The ‘Saturation’ in HSI refers to:
(A) Color brightness
(B) Purity of the color
(C) Angle of color
(D) Energy of the pixel
15. Which transformation is nonlinear in RGB to HSV conversion?
(A) Hue
(B) Red
(C) Blue
(D) Green
16. Which color space provides a more human-perceptual color representation?
(A) RGB
(B) HSI
(C) CMYK
(D) XYZ
17. In HSI, the intensity component is influenced by:
(A) Only red channel
(B) Average of RGB channels
(C) Saturation
(D) Difference between R and G
18. In YCbCr, what do Cb and Cr represent?
(A) Brightness and contrast
(B) Red and green intensities
(C) Blue and red color differences
(D) Green and blue intensities
19. Which of the following is device-dependent?
(A) RGB
(B) HSI
(C) YCbCr
(D) HSV
20. Why is YCbCr preferred in compression techniques?
(A) RGB is more efficient
(B) Luminance and chrominance can be processed separately
(C) It’s easier to code colors
(D) Chrominance is not needed
21. What does chrominance describe in color models?
(A) Brightness only
(B) Texture
(C) Color information excluding brightness
(D) Resolution
22. Which component in HSI is angular?
(A) Hue
(B) Intensity
(C) Saturation
(D) Value
23. RGB is considered what type of color model?
(A) Additive
(B) Subtractive
(C) Cylindrical
(D) Spherical
24. What happens to RGB values in a grayscale image?
(A) They are averaged
(B) Only blue is used
(C) Red is doubled
(D) Green is removed
25. Which color model is most intuitive for human color perception?
(A) RGB
(B) HSI
(C) CMY
(D) XYZ
26. Which of the following models is based on human visual sensitivity?
(A) HSI
(B) CMYK
(C) YCbCr
(D) HSV
27. Which component of HSV defines the brightness of color?
(A) Hue
(B) Saturation
(C) Value
(D) Chroma
28. In the RGB to HSV conversion, which component remains constant when brightness changes?
(A) Hue
(B) Saturation
(C) Value
(D) None
29. In image processing, the conversion from RGB to YCbCr is mostly used for:
(A) Image sharpening
(B) Color segmentation
(C) Data compression
(D) Motion estimation
30. Which component of HSV determines how much gray is in the color?
(A) Hue
(B) Saturation
(C) Value
(D) Luminance
31. How is Y calculated in the YCbCr model?
(A) Sum of R and G
(B) Weighted sum of RGB
(C) Max of RGB
(D) Average of B and G
32. In YCbCr, which component is most affected by lighting conditions?
(A) Cb
(B) Cr
(C) Y
(D) Both Cb and Cr
33. Which of the following is a drawback of the RGB model in image processing?
(A) Not device-dependent
(B) Difficult to separate brightness
(C) Easy to extract features
(D) Low resolution
34. Which of the following models is best for edge detection in colored images?
(A) RGB
(B) HSV
(C) YCbCr
(D) CMYK
35. Which component in HSV is related to the vividness of the color?
(A) Hue
(B) Saturation
(C) Value
(D) Luminance
36. What is the main application of HSI in image analysis?
(A) Edge sharpening
(B) Color enhancement and segmentation
(C) Compression
(D) Interpolation
37. Which transformation results in better visual contrast in compression?
(A) RGB to HSV
(B) RGB to HSI
(C) RGB to YCbCr
(D) RGB to CMY
38. Which model has better chrominance separation?
(A) HSV
(B) RGB
(C) CMY
(D) YCbCr
39. What kind of transformation is RGB to HSI considered?
(A) Linear
(B) Logarithmic
(C) Nonlinear
(D) Polynomial
40. Which of these models allows filtering based on brightness only?
(A) RGB
(B) HSI
(C) HSV
(D) YCbCr
41. How does the human eye respond to brightness and color in YCbCr?
(A) Equally
(B) More to brightness
(C) More to chrominance
(D) Only to hue
42. Which of these models is closer to the way humans describe colors?
(A) RGB
(B) CMY
(C) HSI
(D) YCbCr
43. What is the range of Cb and Cr in 8-bit digital images?
(A) 0 to 100
(B) 0 to 255
(C) -128 to 127
(D) 16 to 240
44. Why is RGB not preferred for segmentation?
(A) It uses fewer colors
(B) Components are dependent
(C) It’s subtractive
(D) Hue is missing
45. How is ‘Value’ calculated in HSV?
(A) Average of RGB
(B) Minimum of RGB
(C) Maximum of RGB
(D) Weighted sum of RGB
46. Which model simplifies object detection in color images?
(A) RGB
(B) CMY
(C) HSV
(D) CMYK
47. Which conversion is used in skin detection algorithms?
(A) RGB to HSV
(B) RGB to CMY
(C) RGB to XYZ
(D) HSV to YCbCr
48. The hue component in HSV is undefined when:
(A) R = G = B
G” onclick=”checkAnswer(‘q48’, ‘R = G = B’)” /> (B) R > G
B” onclick=”checkAnswer(‘q48’, ‘R = G = B’)” /> (C) G > B
R” onclick=”checkAnswer(‘q48’, ‘R = G = B’)” /> (D) B > R
49. Which component in HSV or HSI helps in color segmentation tasks?
(A) Hue
(B) Intensity
(C) Value
(D) Luminance
50. What is the typical bit-depth of each component in YCbCr for 8-bit images?
(A) 4
(B) 8
(C) 16
(D) 24
51. Which color model is preferred for histogram equalization of color images?
(A) RGB
(B) HSI
(C) YCbCr
(D) HSV
