Patent ID: 11869449
Assignee: SATURN LICENSING LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 14:
15. A method of generating a trained neural network model that estimates a local dimming pattern representing light emitting states of light sources corresponding to a plurality of areas divided from a display area of an image display for a target display image, the method comprising:
inputting the target display image to a neural network model;
determining a first screen intensity distribution based on the target display image;
obtaining a second screen intensity distribution when each light source of the image display has been driven, by summing up the contributions obtained from all light sources;
evaluating a local dimming pattern estimated by the neural network model from the target display image in which a loss function defined on the basis of an error between the first screen intensity distribution and the second screen intensity distribution is determined;
obtaining contribution of each light source unit by weighting a point spread function representing an intensity distribution formed by each light source of the image display with predictive values of the local dimming pattern estimated by the neural network model from a first screen intensity distribution target; and
training the neural network model on the basis of a result of the evaluation and use of the loss function.