Image processor, display device having the same and operation method of display device

A display device comprising:

• a display panel including a plurality of pixels connected to a plurality of data lines and a plurality of scan lines, respectively;
• a data driving circuit configured to drive the plurality of data lines;
• a scan driving circuit configured to drive the plurality of scan lines;
• and
• a driving controller configured to receive a control signal and an image signal and to control the data driving circuit and the scan driving circuit such that an image is displayed on the display panel, wherein the driving controller includes:
• a pre-processor configured to perform spatial filtering on an input image signal and output a line image signal corresponding to a single scan line;
• a segmentation processor configured to classify a class of the line image signal and output a segmentation signal representing the class, wherein the segmentation signal comprises a single valued function with a one-dimensional domain corresponding to horizontal positions of the line image signal;
• a correction processor configured to output a corrected segmentation signal corrected for the segmentation signal based on the line image signal;
• and
• a data signal output part configured to receive the line image signal and the corrected segmentation signal and provide a data signal to the data driving circuit, wherein the correction processor detects a class boundary of the segmentation signal, wherein the class boundary indicates a first point among the horizontal positions of the line image signal, detects an edge within an edge region of the line image signal, wherein the edge comprises a second point among the horizontal positions of the line image signal, and corrects the segmentation signal based on the detected edge.

An operation method of a display device, the method comprising:

• performing spatial filtering on an input image signal to output a line image signal corresponding to a single scan line;
• classifying a class of the line image signal to output a segmentation signal representing the class, wherein the segmentation signal comprises a single valued function with a one-dimensional domain corresponding to horizontal positions of the line image signal;
• detecting a class boundary of the segmentation signal, wherein the class boundary indicates a first point among the horizontal positions of the line image signal;
• computing an edge region of the line image signal, wherein the edge region comprises a range of the horizontal positions of the line image signal including the first point;
• detecting an edge within the edge region of the line image signal, wherein the edge comprises a second point among the horizontal positions of the line image signal;
• and
• correcting the segmentation signal based on the detected edge.