The problem of Pose estimation based on single camera arises in many areas of computer vision，including object recognition，site inspection and updating，object tracking and autonomous navigationMany methods are used to solve this problem nowadaysThese methods can be categorized into two groups depending on whether correspondence is known：one is to estimate the Pose parameters if the correspondence has been solved; the other is to solve the Pose and correspondence problem simultaneously〖JP〗A new method based on single camera for estimating the Pose parameters of the object is presented in this paperDifferent from the existing methods，the correspondence problem which is coupled with Pose problem is completely avoided in the proposed approachAn energy function including the Pose parameters is defined to the degree of superposition between the model projection and the object area in the imageThe optimal Pose parameters are found by optimizing the energy functionHooke Jeeves Algorithm is used to minimize the energy functionThe performance of the method is evaluated in a variety of simulations on synthetic dataThese tests show that the method is accurate and effective