Urgent Guidance Needed In My Project (Image Edge Detection)

[anusha0609]

Hi,
I am M.Tech student and I am doing my project on "Image Edge Detection" using "SOBEL Algorithm". Here I have some basic doubts. It will be very help full if any help me in this queries. Actually according to SOBEl Algorithm we are using matrix's (concolution) matices. I want to know how we got those values.

GX=
-1 0 1
-2 0 2
-1 0 1

GY=
-1 -2 -1
0 0 0
1 2 1
I want to know how we got these values as i tried to google it but i was unable to find solution. Thanks in advance Please help me out as this is creating problem for completion of my project.

Thanks & Regards,

Anusha. G

 

[soloktanjung]

Perhaps this will helps: **broken link removed**

 

[sam536]

This not complex algorithm.

check this.

RC[00] RC[01] RC[02]
RC[10] RC[11] RC[12]
RC[20] RC[21] RC[22] is your GX value.

GY results as follows
RC[00] RC[10] RC[20]
RC[01] RC[11] RC[21]
RC[02] RC[21] RC[22] .

hope you got this by this time. Convert the rows into columns and vice versa.

How do you implement this in HW?. If you are using HDL's, then u can use swap variable techniques.
Let me know if you have still any concerns.

By the way , good project for internship.

Best of luck..

Regards, Sam