US 12,086,906 B2
Method and apparatus for simulating sharpness of image boundary
Sunyoung Park, Yongin-si (KR); Tae Ho Kim, Yongin-si (KR); and Min Tak Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jul. 20, 2022, as Appl. No. 17/869,716.
Claims priority of application No. 10-2021-0139730 (KR), filed on Oct. 19, 2021.
Prior Publication US 2023/0119546 A1, Apr. 20, 2023
Int. Cl. G06T 11/00 (2006.01); G06T 7/90 (2017.01)
CPC G06T 11/001 (2013.01) [G06T 7/90 (2017.01); G06T 2207/10024 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for simulating sharpness of an image boundary,
the method comprising:
setting a boundary pattern including a boundary line between black and white, and a unit pattern including arrangement information of pixels;
calculating simulation grayscale data for implementing the boundary pattern by using the unit pattern; and
obtaining a sharpness index for the boundary line based on a contrast sensitivity function (CSF) and brightness data extracted from the simulation grayscale data,
wherein:
the setting the boundary pattern and the unit pattern includes:
outputting the unit pattern from a storage;
selecting a rendering filter for the boundary pattern based on the unit pattern; and
calculating a grayscale map corresponding to the boundary pattern based on the rendering filter; and
the calculating the simulation grayscale data includes:
implementing a size of the boundary pattern by repeatedly arranging the unit pattern;
determining a weight of each of the pixels based on an area of each of the pixels included in the unit pattern; and
obtaining the simulation grayscale data by respectively applying the weight of each of the pixels to grayscale values of coordinates of the grayscale map.