| 摘要 |
The present invention relates to a method for capturing an image of a work area including a display of a virtual keyboard having a plurality of keys and detecting a key selected among the plurality of the keys. Detecting the selected key includes analyzing a variation of the optical intensity in the captured image and detecting objects within the work area. Detecting the objects includes generating a first line histogram based on the optical intensity of each line of each captured image, generating a first row histogram based on the optical intensity of each row of each captured image and identifying a key selected on the basis of the first line histogram and the first row histogram. The method includes outputting an identifier of the selected key to a host device. |
