It is an aspect of the present disclosure to provide an image processing apparatus, a display apparatus and a method of controlling of the display apparatus capable of preventing a rapid decrease in the image quality of image data.In accordance with an example aspect of the present disclosure, a display apparatus comprises: a plurality of image processing modules, each image processing module configured to perform an image processing process; a controller configured to output image data processed by any one image processing module of the plurality of image processing modules, based on state information of the plurality of image processing modules; and a display configured to display the output image data.