Why result different between cvsmooth('gauss') and GaussianBlur

C++
1 
cvSmooth( src,  dst, CV_GAUSSIAN, 0,4,4)；

cv::GaussianBlur(src, dst, cv::Size(0, 0), 4,4);

two result are different, Why?

2

impossible to tell. cvSmooth sounds like a decade-old API.

can you find documentation on it/

3

looking here,

it seems your cvSmooth() call has wrong parameters, it should be:

cvSmooth( src,  dst, CV_GAUSSIAN, 0, 0, 4, 4)；
-------------------------------------^

to achieve the same result.

also, yes, deprecated / removed api. DONT USE THAT !

4

so

cvSmooth( src,  dst, CV_GAUSSIAN, 0,4,4,0)；

=

cv::GaussianBlur(src, dst, cv::Size(0, 4), 4,0, cv::BORDER_REPLICATE );

right?

5

yea right. and probably not what you wanted ;}