Video wall

A video wall comprising:

• a plurality of displays arranged adjacent to each other;
• an image divider configured to divide an input image into a plurality of images for displaying on the plurality of displays;
• and
• at least one controller configured to control a plurality of image display apparatuses corresponding to the plurality of displays,
• wherein in response to a video including a plurality of frames having varied luminance being repeatedly played back on the plurality of image display apparatuses, the at least one controller is configured to extract a luminance value of each sub-pixel of the repeatedly played video during a first period of a repeated playback period, calculate an accumulated luminance value based on the extracted luminance value during the first period, and calculate a common compensation luminance value based on the calculated accumulated luminance value, and based on the common compensation luminance value, the plurality of displays display the video during a second period following the first period when the video is repeatedly played back,
• wherein a luminance compensation value is inversely proportional to the varied luminance of the plurality of frames.