match pattern with camera

[mon3am]

hello everyone,

im trying to use a usb camera with labview to get information about pcb board( for example check for presence of object).in the first time i modify the match pattern example to work with my camera,it work but the result of matching is not overlayed continuously .in the second time i modify the match pattern (all) axample,the pattern i select are continously overlayed but the camera is blocked and display one image with overlayed result  .i want the result to be continously overlayed and the camera not blocked. 
can any one help me to complete my work pleese? 

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[SaranVenkateshS]

USE THIS OVERLAY FUNCTION TO DRAW OVERLAY. .

[mon3am]

thank you, but i have the same result,the averlay rectangle desappear