Remastering lower dynamic range content for higher dynamic range displays

A method comprising:

• receiving, by a processing device, an image corresponding to a first pixel value range;
• processing, by the processing device, an input corresponding to the image using a trained machine learning model to generate a first output and a second output, wherein the second output comprises an expansion map that indicates pixel classifications for pixels in the image, wherein one or more pixels having a first classification are included in a region of the image for which luminance is to be modified;
• expanding the image to generate image data corresponding to a second pixel value range, wherein the second pixel value range is larger than the first pixel value range;
• updating the image data using a first operator, wherein the first operator applies a filter to reduce one or more banding artifacts in the image data based on the first output;
• updating the image data using a second operator, wherein the second operator modifies the luminance of the region of the expanded image based on the second output;
• and
• outputting, by the processing device, the image data.

A non-transitory machine-readable storage medium storing instructions which, when executed, cause a processing device to perform operations comprising:

• receiving an image corresponding to a first pixel value range;
• processing an input corresponding to the image using a trained machine learning model to generate a first output and a second output, wherein the second output comprises an expansion map that indicates pixel classifications for pixels in the image, wherein one or more pixels having a first classification are included in a region of the image for which luminance is to be modified;
• expanding the image to generate image data corresponding to a second pixel value range, wherein the second pixel value range is larger than the first pixel value range;
• updating the image data using a first operator, wherein the first operator applies a filter to reduce one or more banding artifacts in the image data based on the first output;
• updating the image data using a second operator, wherein the second operator modifies the luminance of the region of the expanded image based on the second output;
• and
• outputting the image data to one or more devices.