Emgu cv improve accuracy

See more:

C#

.NET

Emgu-CV

face-detection

I think i have a problem with my project ,
it's about an application for employee attandance using face recognition,


i use emgu cv to develop my project ,but when i have try to test my program by train my face and my friend's face ,it show an incorrect result ,

I try to capture my face using the camera ,
but the result show that it was my friend face ,

i think i need to improve the accuracy ,

ok i think i have found it,

What I have tried:

This is my current code when it was show incorrect

EigenObjectRecognizer recognizer = new EigenObjectRecognizer(
                           trainingimages.ToArray(),
                           labels.ToArray(),
                           3000,//this is the different
                           ref termCrit);

i change code into this

EigenObjectRecognizer recognizer = new EigenObjectRecognizer(
                           trainingimages.ToArray(),
                           labels.ToArray(),
                           100, //this is the different
                           ref termCrit);

and it show and detect face accurate,

can any one explain me about the differences of 3000 and 100 in my code?