Question

The response for linear spatial filtering is given by the relationship __________

(a) Sum of filter coefficient’s product and corresponding image pixel under filter mask

(b) Difference of filter coefficient’s product and corresponding image pixel under filter mask

(c) Product of filter coefficient’s product and corresponding image pixel under filter mask

(d) None of the mentioned

The question was asked in homework.

Origin of the question is Spatial Filtering topic in portion Intensity Transformations and Spatial Filtering of Digital Image Processing

Answer 1

Right choice is (a) Sum of filter coefficient’s product and corresponding image pixel under filter mask

Easiest explanation: In spatial filtering the mask is moved from point to point and at each point the response is calculated using a predefined relationship. The relationship in linear spatial filtering is given by: the Sum of filter coefficient’s product and corresponding image pixel in area under filter mask.