1. A display control apparatus, comprising: a viewing condition recognition circuit, configured to recognize a viewing condition associated with a display device to generate a viewing condition recognition result; a content classification circuit, configured to analyze an input frame to generate a content classification result of contents included in the input frame; and a display adjustment circuit, configured to generate an output frame by performing image content adjustment according to the viewing condition recognition result and the content classification result, wherein the image content adjustment comprises at least content-adaptive adjustment applied to at least a portion of pixel positions of the input frame based on the content classification result.