visual odometry
... that on the Mars Exploration Rover , a technique known as visual odometry allowed the rover to estimate its position and orientation using only camera images?
... that on the <a href="./Mars_Exploration_Rover" id="mwD_8" rel="mw:WikiLink" title="Mars Exploration Rover">Mars Exploration Rover</a> <i id="mwEAA">(artist's impression pictured)</i>, a technique known as <b id="mwEAE"><a href="./Visual_odometry" id="mwEAI" rel="mw:WikiLink" title="Visual odometry">visual odometry</a></b> allowed the rover to estimate its position and orientation using only camera images?