A data processing apparatus which transmits print data to a print apparatus through a specific communication medium is capable of generating intermediate data different in data form from the print data before generating the print data. The structure includes a substrate, a gate dielectric on the substrate, a gate on the gate dielectric, an etch-stop layer on the gate, and an interlayer dielectric on the etch-stop layer. In this invention, different features of a variable can be quantified either locally as individual events, or on an arbitrary spatio-temporal scale as scalar fields in properly chosen threshold space. An estimated pose of a human model is estimated based on the detected features and kinematic constraints of the human model.