Stereoscopic image generating method, stereoscopic image generating device, and display device having same

A stereoscopic image generating device to generate an image enabling stereoscopy, based on one or more input images representing a three-dimensional object, and distance to the three-dimensional object corresponding to pixels of the input image, comprises:

• a luminance gradient calculating unit configured to, when having set a starting point and ending point which determine a luminance gradient calculation direction corresponding to a direction from one eye to the other eye of a user who performs stereoscopy, such that the ending point is a pixel of interest included in the input image and the starting point is a pixel adjacent to or near the pixel of interest, calculate a luminance gradient from the pixel serving as the starting point to the pixel of interest;
• a luminance-corrected image generating unit configured to generate an image where the input image has been subjected one or two luminance corrections, by performing at least one of a first correction in which a correction amount of the same sign as that of the positive or negative luminance gradient is applied to the luminance of the pixel of interest, and a second correction in which a correction amount of the opposite sign as that of the positive or negative luminance gradient is applied to the luminance of the pixel of interest;
• and
• a correction amount calculating unit configured to set the correction amount such that the greater an absolute value of the luminance gradient is, and the smaller the distance corresponding to the pixel of interest is, the greater an absolute value of the correction amount is;
• wherein, the luminance-corrected image generating unit outputs either the luminance-corrected image obtained by the first correction, or in a case where this image is not generated, the input image, as an image to be provided to the other eye of the user, and outputs either the luminance-corrected image obtained by the second correction, or in a case where this image is not generated, the input image, as an image to be provided to the one eye of the user.