Dynamic scaling of content luminance and backlight

A system, comprising:

• an ambient light sensor configured to determine an ambient light level of a local environment proximate a display screen;
• an ambient condition determination module configured to determine, based on the ambient light level, a minimum viewable threshold representing a minimum pixel luminance value perceivable by a user in the ambient light level of the local environment;
• and
• a content adjustment module configured to generate a modified display image by shifting a pixel luminance value of each pixel of an input image by a same fixed shift value such that a darkest pixel value of the modified display image is equal to or greater than the minimum viewable threshold, the fixed shift value being based at least in part on a defined threshold of pixel contrast loss between pixels in the input image.

A method, comprising:

• determining, using one or more processors of a display system, an ambient light level of a local environment proximate the display system;
• determining, using the one or more processors, the ambient light level is dimmer than a first ambient light threshold;
• determining, based on the ambient light level being dimmer than the first ambient light threshold, a step value representing a minimum luminance change perceivable from a first pixel to a second pixel by a user in the ambient light level of the local environment;
• generating, using the one or more processors, a modified display image by shifting a pixel luminance value of each pixel of an input image by a same fixed shift value that is based on the step value and on a defined threshold of pixel contrast loss between pixels in the input image, such that more image details are perceivable in the modified display image than the input image;
• and
• transmitting the modified display image for display at a display screen of the display system.