Image processing device for correcting an image to be displayed on a display by detecting dark sub-pixels between two bright sub-pixels

An image processing device configured to process a video signal displayed on a display having pixels each including sub-pixels having different colors, the subpixels being arranged in a shape of stripes, the image processing device comprising:

• a processor;
• and
• a memory storing a program,
• wherein the program, when executed by the processor, configures the processor to:
• analyze the video signal by two pixels adjacent in a direction orthogonal to the stripes and detect, in the two pixels in each of which at least one sub-pixel is lit, dark sub-pixels continuing by a number equivalent to one pixel or more between two bright sub-pixels each of which has a largest value in each of the two pixels;
• determine at least one sub-pixel in the dark sub-pixels to be a correction target;
• compute a correction value of the correction-target sub-pixel based on values of the sub-pixels included in the two pixels;
• and
• increase a value of the correction-target sub-pixel by the correction value.

An image processing method for processing a video signal displayed on a display having pixels each including sub-pixels having different colors, the subpixels being arranged in a shape of stripes, the method comprising steps of:

• analyzing, scanning the video signal by two pixels adjacent in a direction orthogonal to the stripes and detecting, in the two pixels in each of which at least one sub-pixel is lit, dark subpixels continuing by a number equivalent to one pixel or more between two bright sub-pixels each of which has a largest value in each of the two pixels, performed by a pixel scan section in a processor;
• determining at least one sub-pixel in the dark sub-pixels to be a correction target, performed by a correction target determination section in the processor;
• computing a correction value of the correction-target sub-pixel based on values of the sub-pixels included in the two pixels, performed by a correction value computation section in the processor;
• and
• increasing a value of the correction-target sub-pixel by the correction value, performed by a sub-pixel correction section in the processor.