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

Claim 16:
17. A method of generating a trained neural network model, the method comprising:
inputting a target display image to a neural network model;
evaluating a local dimming pattern estimated by the neural network model from the target display image in which contribution of each light source is obtained by weighting a point spread function representing an intensity distribution formed by each light source of an image display with predictive values of the local dimming pattern estimated by the neural network model from the target display image and in which a corrected image is determined by dividing the target display image by the screen intensity distribution, the screen intensity distribution is applied to the corrected image obtained by applying transmission characteristics of the image display to the corrected image to calculate an estimation result of a display image in the image display, and a loss function defined on the basis of an error between the estimation result of the display image and the target display image input to the neural network is determined;
determining a screen intensity distribution when each light source of the image display has been driven by summing up the contributions obtained from all light sources;
and
training the neural network model based on the loss function.