Computer Knowledge

Digital Image Processing

2,103 Questions

Digital image processing involves manipulating digital images through various algorithms to enhance their visual quality or extract information. Key concepts include noise reduction, high dynamic range imaging, color correction, and sharpening techniques. These concepts are essential for computer science exams and technical certifications.

Color management systemsNoise reduction techniquesHDR image combiningImage sharpening techniquesAlpha matting process

Digital Image Processing Questions

Multiple choice

Which of the following is not a common technique used to accelerate global illumination calculations?

  1. Photon mapping

  2. Irradiance caching

  3. Bidirectional path tracing

  4. Rasterization
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rasterization is not a common technique used to accelerate global illumination calculations because it is a local illumination method.

Multiple choice

Which of the following is a common technique used to reduce the noise in global illumination calculations?

  1. Denoising filters

  2. Adaptive sampling

  3. Importance sampling

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Denoising filters, adaptive sampling, and importance sampling are all common techniques used to reduce the noise in global illumination calculations.

Multiple choice

Which of the following is not a common type of adaptive sampling?

  1. Pixel-based adaptive sampling

  2. Object-based adaptive sampling

  3. Material-based adaptive sampling

  4. Light-based adaptive sampling
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Light-based adaptive sampling is not a common type of adaptive sampling because it is difficult to implement and can be computationally expensive.