1. How many types of image filters in OpenCV ?

Answer: They are as follows.

– Averaging

– Gaussian Filtering

– Median Filtering

– Bilateral Filtering

2. How many types of video filters in OpenCV ?

Answer: They are as follows.

– Color Conversion

– Thresholding

– Smoothing

– Morphology

– Gradients

– Canny Edge Detection

– Contours

– Histograms

3. What Is Dynamic Range?

Answer: The range of values spanned by the gray scale is called dynamic range of an image. The image will have high contrast, if the dynamic range is high then image will have dull washed out gray look if the dynamic range is low.

4. What Do You Meant By Color Model?

Answer: A Color model is a specification of 3D-coordinates system and a subspace within that system where each color is represented by a single point.

5. What Are The Types Of Light Receptors?

Answer: The two types of light receptors are

– Cones

– Rods