CPC H04N 9/317 (2013.01) [G02B 7/08 (2013.01); G06T 7/521 (2017.01); G01B 11/25 (2013.01); G01S 17/894 (2020.01); G06T 2207/10028 (2013.01); G06T 2207/20068 (2013.01)] | 17 Claims |
1. An automatic focusing projection method, the method being applicable to an automatic focusing projection system, the automatic focusing projection system comprising a ranging unit, a projection unit, and a reflection unit, wherein the ranging unit is configured to acquire a depth image, the projection unit is configured to project an image, and the reflection unit is configured to change a direction of outgoing light of the projection unit; and the automatic focusing projection method comprises:
acquiring a depth image from the ranging unit, and acquiring a vertical projection distance from the ranging unit to a projection plane based on the depth image;
acquiring position information of a center point of a projection picture in the depth image based on an elevation angle of the reflection unit and the vertical projection distance;
acquiring a projection distance between the projection unit and the projection picture based on the position information; and
performing focus adjustment on the projection unit based on the projection distance.
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