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Give different edge detection masks along with values

Mumbai University > Electronics and telecommunication > Sem 7 > image and video processing

Marks: 05

Years: MAY 2016

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The various Edge detection masks are:-

I. Roberts Mask

II. Prewitts Mask

III. Sobel Mask

I. Roberts Mask

i. Following is the Roberts Mask

|F|=|Z5Z9|+|Z6Z8|

enter image description here

The values of the Roberts Mask are:

enter image description here and enter image description here

The values of the two Roberts Mask are:

enter image description here

II. Prewitts Mask

F= x- gradient + y-gradient

i.e.F=|(Z7+Z8+Z9)(Z1+Z2+Z3)|+|(Z3+Z6+Z9)(Z1+Z4+Z7)|

Thus from this equation we get the Prewitts mask as:

enter image description here

III. Sobels Mask

∇ F = x- gradient + y-gradient

i.e. F=|(Z7+2Z8+Z9)(Z1+2Z2+Z3)|+|(Z3+2Z6+Z9)(Z1+2Z4+Z7)|

From this equation, the sobels mask is as follows

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