Digital Image Processing Interview Questions And Answers | IMAGE PROCESSING INTERVIEW QUESTIONS & ANSWERS

1. Image is a 2D representation of a 3D world.


2. Basic elements of the image processing system.

  • Image acquisition
  • Image storage
  • Image processing
  • Display
  • Transmission
3. The process of digitization involves two steps:
  • Sampling: Digitization of co-ordinate values.
  • Quantization: Digitization of amplitude values.
Digitization = Sampling + Quantization

4. Spatial resolution gives us an indication of the sampling while gray-level resolution gives us an indication of the quantization.

5. Low pass filtering: It removes high-frequency content from the image. It removes the noise present in the image. Also called smoothening. 

6. Principal source of noise in a digital image is image acquisition and image transmission.

7. Various types of image noise: Gaussian noise, Salt and pepper noise, Rayleigh noise, Gamma noise, Exponential noise, Uniform noise.

8. Low pass averaging filer: Used to eliminate gaussian noise. It removes noise by blurring it till it is no longer seen. But in this process, it also blurs the edges. The bigger the averaging mask, the more is the blurring.

9. Histogram is the graphical representation of the digital image. It represents the relative frequency of occurnece 

Digital Image Processing Interview Questions And Answers | IMAGE PROCESSING INTERVIEW QUESTIONS & ANSWERS Digital Image Processing Interview Questions And Answers | IMAGE PROCESSING INTERVIEW QUESTIONS & ANSWERS Reviewed by IPR on May 06, 2022 Rating: 5

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