Title:
PROJECTION FOCUSING METHOD AND PROJECTION FOCUSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/197357
Kind Code:
A1
Abstract:
The present application provides a projection focusing method and a projection focusing device. The method comprises: acquiring training data (11), the training data comprising the definition of multiple projection images; defining an action space, a state space, and a reward function by using the training data (12), the state space comprising gradient of the definition, moving step length of a motor, and an identifier value of the rotating direction of the motor; training a reinforcement learning model by using the training data, the action space, the state space, and the reward function (13); acquiring the current projection image by using a camera device, recognizing the definition of the current projection image, and inputting the definition of the current projection image into the reinforcement learning model to obtain the current moving step length of the motor (14); controlling the current moving step length of the motor so that the motor drives a projection device to move (15); determining whether focusing is successful (16); and continuing controlling the motor to move if focusing is unsuccessful. By means of the method above, according to the present application, the motor is controlled by using the reinforcement learning model, and the time for the projection device to reach an optimal focusing position is reduced.
Inventors:
DENG YUECI (CN)
WU WENHAO (CN)
LI YI (CN)
WU WENHAO (CN)
LI YI (CN)
Application Number:
PCT/CN2021/084191
Publication Date:
October 07, 2021
Filing Date:
March 30, 2021
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
H04N9/31; H04N5/232; G06N3/04; G06N3/08
Foreign References:
| CN109714519A | 2019-05-03 | |||
| CN108764006A | 2018-11-06 | |||
| CN110365951A | 2019-10-22 | |||
| CN110769215A | 2020-02-07 | |||
| CN108364269A | 2018-08-03 | |||
| US20190303669A1 | 2019-10-03 | |||
| US20190385051A1 | 2019-12-19 |
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