tailieunhanh - Machine Vision - David Vernon Part 8

Tham khảo tài liệu 'machine vision - david vernon part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Robot programming and robot vision rotation transformation then the rotation transformation is made with respect to the base reference coordinate frame. At this stage we have developed a system where we can specify the position and orientation of coordinate reference frames anywhere with respect to each other and with respect to a given base frame. This in itself is quite useless since the world you and I know does not have too many coordinate reference frames in it. What we really require is a way of identifying the pose of objects. In fact we are about there. The trick and it is no more than a trick is to attach a coordinate frame to an object . symbolically glue an ATZ-frame into an object simply by defining it to be there. Now as we rotate and translate the coordinate frame so too do we rotate and translate objects. We shall see this at work in the next section on robot programming. Robot programming a wire crimping task specification Perhaps the best way to introduce robot programming is by example and so we will develop our robot programming methodology in the context of a specific application automated wire crimping. The wire crimping task requires that a robot manipulator grasp a wire from a tray of wires see Figure . The wires are short and curved but they are flexible and the curvature varies from wire to wire. We will assume that although the wires a 164 Robot programming a wire crimping task specification b Figure a A tray of flexible electrical wires b an image of which yields a point on a wire which is suitable for grasping c allowing the robot to pick up the wire and manipulate it. .

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