need help in sobel edge detection

[alangs]

someone can tell me how sobel algorithm is used in detection edges in an image...how exactly is works??

 

[sureshreddy]

Sobel is one among best filters to find out edges in image.By using this filter do it once in X-axis with main image and do it once inY-axis with main image.

 

[alangs]

hi sureshreddy could you plz explain in detail....how exactly the edges are detected by sobel??

 

[vineetkumar1992]

sir i want to simulate sobel edge detctor on Xilinux and modelsim using only VHDL.
tell me how we can load image on xilinux and detect edges without using matlab or other software and suggest code and refrences.

 

[kalyansrinivas]

It works by taking the intensity difference at every point on the image (df/dx)

U can model in hardware if u can find the intensity difference at each point

Some good book u can refer for more correct info

Regards
M Kalyansrinivas

 

[vineetkumar1992]

please suggest me some related books which are useful.
is it is possible to insert image on Xilinux without use of matlab?
please tell me how.

 

[kalyansrinivas]

Hi

You can refer to this book digital image processing by gonzalez

You have to pre-store the image in a RAM for hardware modeling

regards
M Kalyansrinivas