According to the features of cameras shooting from up to down

a new method of detecting human head is put forward

which uses the pixels of the target and pixels around the target.First

detect all possible targets in the left image.Then chose the pixels of every target and the pixels around the target as an integrated object

and use them to match the right image according to some constraint conditions.Thus the disparity of the integrated object can be gotten.The method integrating the pixels of target and around the target overcomes the shortcoming of weak texture of human head

which would increase the accuracy of matching. So the accuracy of disparity can be increased

too.According to the disparity

some fake target can be excluded.And the accuracy of recognizing human head would be increased.