Unlock instant, AI-driven research and patent intelligence for your innovation.

Eyeball center positioning method, device and system

A center positioning and eyeball technology, applied in the field of image processing, can solve problems such as the inability to accurately determine the center position of the eyeball and the misalignment of the eyeball

Active Publication Date: 2019-10-22
北京贝塔科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides an eyeball center positioning method, device and system to overcome the inability to accurately determine the position of the eyeball center in the prior art in portrait cosmetology, resulting in misalignment of the contact lenses and the eyeball in the image The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Eyeball center positioning method, device and system
  • Eyeball center positioning method, device and system
  • Eyeball center positioning method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] see figure 1 , which is a schematic flowchart of a method for eyeball center positioning provided in the embodiment of the present application, the method may include:

[0069] Step S101: Obtain the coordinates of the feature points of the outer contour of the eyes in the image.

[0070] There are many ways to obtain the feature points of the outer contour of the eye, such as the ASM (Active Shape Model) method or the neural network method.

[0071] S...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the present application provides an eyeball center positioning method, device and system to obtain a masked grayscale image of a target image (that is, the approximate area of ​​the eye), and invert the color of each pixel in the target image to obtain an inverse image of the target. Calculate the x-direction gradient map and the y-direction gradient map corresponding to the target image. Then calculate the unit gradient vector of each pixel in the target inverse image, and the dot product sum Sum of the unit position vector of each pixel in the gradient image i,j , to obtain the Sum corresponding to each pixel of the target inversion image i,j As a result map composed of pixel values, obtain a normalized result map, reverse the color of each pixel in the normalized result map, and obtain an inverted result map, based on the pixel value of each pixel in the reversed result map And the coordinates of each pixel point, and calculate the weighted average coordinates of each pixel point in the inversion result image, so as to determine the eyeball center coordinates. Therefore, the purpose of accurately determining the position of the center of the eyeball is achieved.

Description

technical field [0001] The present application relates to the technical field of image processing, and more specifically relates to an eyeball center positioning method, device and system. Background technique [0002] In the portrait beauty based on image processing, color contact lenses are an important step. Adding beautiful contact lenses to the eyes of the characters in the input image can significantly improve the effect of image beauty. This requires a very high-precision eyeball center positioning technology, and a small center position deviation will cause misalignment between the color contact lenses and the eyeball in the image. [0003] Therefore, a high-precision eyeball center positioning method is needed in the prior art. Contents of the invention [0004] In view of this, the present invention provides an eyeball center positioning method, device and system to overcome the inability to accurately determine the position of the eyeball center in the prior ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/66G06T7/90G06K9/00
CPCG06T2207/20084G06T2207/10004G06T2207/30196G06V40/193
Inventor 张勇何茜
Owner 北京贝塔科技有限公司