METHOD AND DEVICE FOR ENHANCING EDGE OF IMAGE AND DIGITAL CAMERA

摘要

A method and a device for enhancing an edge of an image are provided. The method includes: obtaining a first gradient value of a pixel; determining whether the pixel is at a rough edge according to the first gradient value; if yes, obtaining a first edge enhancement value of the pixel and obtaining a first edge enhancement result of the pixel according to the first edge enhancement value; if no, obtaining a second gradient value of the pixel; determining whether the pixel is at a tiny edge according to the second gradient value; if yes, obtaining a second edge enhancement value of the pixel and obtaining a second edge enhancement result of the pixel according to the second edge enhancement value; if no, obtaining the pixel value of the pixel as the edge enhancement result of the pixel; and repeating above steps until each pixel of the image is processed.

主权项

1. A method for enhancing an edge of an image, comprising:
obtaining a first gradient value of a pixel of the image; determining whether the pixel is at a rough edge according to the first gradient value of the pixel; if the pixel is at the rough edge, obtaining a first edge enhancement value of the pixel, and obtaining a first edge enhancement result of the pixel according to the first edge enhancement value of the pixel; if the pixel is not at the rough edge, obtaining a second gradient value of the pixel; determining whether the pixel is at a tiny edge according to the second gradient value of the pixel; if the pixel is at the tiny edge, obtaining a second edge enhancement value of the pixel, and obtaining a second edge enhancement result of the pixel according to the second edge enhancement value of the pixel; and if the pixel is not at the tiny edge, obtaining the pixel value of the pixel as the edge enhancement result of the pixel.