Machine Vision

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shape matching

hello 

currently im trying to build a program to detect road markings. im using vision acquisition and vision express in my program. to detect the road marking im using shape matching. in my program i put a "greater" comparison and link it to the boolean thus any match with the template will change the boolean colour to green. however the program didnt find any match with the template although i have reduce the accuracy to 100 only. is there any problem with the shape matching or the program itself? with this i attach the my program and the template image along with the input of images that i used. 

thanks a lot

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before start to write any code in labview for image processing first check your algorithm in vision assistance
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