Stereoscopic image display device and controlling method thereof

A stereoscopic image display device comprising:

• a display;
• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor, cause the at least one processor to:
• obtain a depth map from a planar image;
• obtain feature information related to a first depth from the depth map;
• obtain context information of the planar image;
• calculate an estimated visual comfort (VC) of a user for viewing a first stereoscopic image, based on the depth map, the feature information, and the context information;
• generate a corrected depth map, based on the estimated VC and a target VC;
• generate a left-eye image by correcting the planar image, based on the corrected depth map;
• generate a right-eye image by warping the left-eye image;
• and
• output, to the display, the left-eye image and the right-eye image to display a second stereoscopic image,
• wherein the feature information comprises a plurality of weighting values contributing to the estimated VC according to a first plurality of depths of a plurality of pixels included in the planar image.