1. A display control apparatus, comprising: a viewing condition recognition circuit, wherein the viewing condition recognition circuit generates a viewing condition recognition result by recognizing a viewing condition associated with a display device and based on a confidence value of uncomfortable viewing that is calculated using a mathematical combination of a confidence value of low light and a confidence value of short distance, the viewing condition recognition circuit calculating the confidence value of low light according to output of an ambient light sensor and calculating the confidence value of short distance according to output of a proximity sensor; a content classification circuit, wherein the content classification circuit generates a content classification result of contents included in an input frame by analyzing the input frame; and a display adjustment circuit, wherein the display adjustment circuit generates an output frame by performing image content adjustment according to the viewing condition recognition result and the content classification result, and outputs the output frame to the display device which displays the output frame; and the image content adjustment comprises at least content-adaptive adjustment applied to at least a portion of the contents of the input frame, and said at least a portion of the contents is selected based on the content classification result.