Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
按照例程做特征点识别的时候,有一些规则的物体(比如小球)总是找不到特征点,请问这是怎么回事呢?