how to use vlib to detect motioning object

dongmei ma

hello everyone，

Now,we want to use vlib to detect and track moving object,but I'm not sure which function could I use and how to use,I try to use the function " VLIB_trackFeaturesLucasKanade_7x7" to get the moving object's coordinate,but I failed to get the return values.

who can tell me which function could I use to get moving object's coordinate?

THANKS!

over 10 years ago

0 Pavel Botev over 10 years ago

TI__Guru**** 170625 points

Hello,

What TI device exactly you are using?

Are you using EZSDK or else?

BR
Pavel

0 dongmei ma over 10 years ago in reply to Pavel Botev

Intellectual 585 points

we use DVRRDK on DM8168,now I try to use function VLIB_trackFeaturesLucasKanade_7x7 in vlib ,but I don't known how to set its parameters，I can't get valid return X&Y coordinate,

lik the flowing function
VLIB_trackFeaturesLucasKanade_7x7 (
char *im1 // Input Luma image 1
char *im2 //Input Luma image 2
short *gradX //X gradient of im1
short *gradY //Y gradient of im1
int width // Image width
int height //Image height
int nfeatures //Number of features
short *x //X feature coordinates in im1
short *y //Y feature coordinates in im1
short *outx //X feature coordinates in im2
short *outy //Y feature coordinates in im2
int iters //Number of iterations
char *scratch //Scratch memory
);
like this ,I get gradX &gradY use VLIB_xyGradients,but I don't known how to set x&y,and I can't get outx&outy .can you tell me how to set input parameters?
thanks!

0 Pavel Botev over 10 years ago in reply to dongmei ma

TI__Guru**** 170625 points

I can provide you these links for VLIB_trackFeaturesLucasKanade_7x7() function:

e2e.ti.com/.../71259.aspx

e2e.ti.com/.../6448.aspx

e2e.ti.com/.../75718.aspx

e2e.ti.com/.../41891.aspx

e2e.ti.com/.../571147.aspx

e2e.ti.com/.../521005.aspx

BR
Pavel

Processors

Processors forum

how to use vlib to detect motioning object