Patent ID: 8368750

Claim:
A non-uniformity evaluation apparatus for evaluating a display non-uniformity (also called “mura” below) of a display device, comprising: a non-uniformity detection unit that acquires a plurality of images of a display mura present in a display area of the display device by scanning the display area while moving along a spherical surface with a preset radius; and an information processing apparatus that generates a three-dimensional mura figure from the plurality of images acquired by the non-uniformity detection unit, by associating a feature value of the display mura in each of the images with a position where the image is acquired, and displays the three-dimensional mura figure superimposed on a virtual plane representing the display area so that the three-dimensional mura figure can be viewed from a designated observation angle, wherein the information processing apparatus further comprises: a memory device that obtains an elevation angle and an azimuth angle as the position, and stores two kinds of three-dimensional mura figure data, one of which is three-dimensional mura figure data specified by a feature value of the display mura at each of the positions, and the other of which is three-dimensional mura figure data having coordinates converted into a Cartesian coordinate system from those in the former three-dimensional mura figure data, a controlling device that calculates the three-dimensional mura figure viewed when the virtual plane is viewed from the observation angle, and generates a mura superimposed image in which the three-dimensional mura figure is superimposed on the virtual plane, and a control I/O unit section that outputs the three-dimensional mura figure superimposed on the virtual plane.