US 12,148,167 B2
Image processing circuit and associated image processing method
Chung-Yan Chih, HsinChu (TW); and Wen-Tsung Huang, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on May 9, 2022, as Appl. No. 17/740,341.
Claims priority of application No. 110131199 (TW), filed on Aug. 24, 2021.
Prior Publication US 2023/0063787 A1, Mar. 2, 2023
Int. Cl. G06T 5/70 (2024.01); G06T 7/13 (2017.01)
CPC G06T 7/13 (2017.01) [G06T 5/70 (2024.01)] 14 Claims
OG exemplary drawing
 
1. An image processing method, comprising:
using a plurality of corner detection filters to perform corner detection on a specific pixel of image data to generate a plurality of detection results, respectively, wherein the plurality of corner detection filters correspond to a plurality of corners with different directions, respectively;
determining which one of the plurality of corners with different directions the specific pixel belongs to according to the plurality of detection results; and
according to a specific corner among the plurality of corners to which the specific pixel belongs, performing an image processing operation corresponding to the specific corner on the specific pixel to generate processed image data;
using a black-white corner detection filter to perform a black-white corner detection on the specific pixel of the image data to generate a black-white corner detection result, wherein the black-white corner detection filter is a filter with symmetrical coefficients; and
the step of determining which one of the plurality of corners with different directions the specific pixel belongs to according to the plurality of detection results comprises:
determining which one of the plurality of corners with different directions the specific pixel belongs to according to the plurality of detection results and the black-white corner detection result.