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Let us follow the following steps to understand how a convolution operator works. The steps to be followed are:


                                      Open the          Repeat the               Form a theory of why
                                      earlier link    previous activity            it is happening


                                       If YES,          Change the
                                       BRAVO              picture          If NO
                                                                                      Change the position
                                                                          Were you      of numbers and
                                                                          correct?     check your theory

                 Now, try changing the values in the convolution operator and observe the modifications in the output image with
                 the following criteria:

                    • Change all values in the convolution matrix to positive values:














                 What did you observe?
                 The output image will likely become brighter. Since all values are positive, it enhances the features in the image
                 by increasing their intensity. No edges or details are emphasised.

                    • Change all values in the convolution matrix to negative numbers.















                 What did you observe?

                 The result will be the opposite of the positive values. The image may darken or show an inverse effect. Negative
                 values tend to blur or edge-detect the image, creating darker or more shadowed areas.

                    • Create a convolution matrix that includes both positive and negative values, for example:


















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