METHOD FOR DETERMINING RANGE TO BE SCANNED AND LIGHT PATHS TO BE SCANNED IN TOUCH AREA RECOGNITION

摘要

A method for determining a range to be scanned and light paths to be scanned in touch area recognition. The method for determining light paths to be scanned comprises the following steps: (1) enabling each light path layer to have a layer mask; enabling each divided area to have an area mask; setting a light path mask for each light path; (2) determining layer masks and area masks that are needed by next frame scanning; and (3) determining the light paths to be scanned. The method can effectively improve the efficiency of scanning and shorten the time of touch area recognition.