Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Micro expression recognition method based on optical flow and Fisher Vector coding

A recognition method and micro-expression technology, applied in character and pattern recognition, acquisition/recognition of facial features, instruments, etc., can solve the problems of poor robustness, low recognition rate, and easy to be interfered by noise, so as to improve robustness, The effect of reducing the effect of local noise

Active Publication Date: 2017-06-27
济南中磁电子科技有限公司
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing micro-expression recognition methods have problems such as poor robustness, easy to be disturbed by noise, and low recognition rate.

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
  • Micro expression recognition method based on optical flow and Fisher Vector coding
  • Micro expression recognition method based on optical flow and Fisher Vector coding
  • Micro expression recognition method based on optical flow and Fisher Vector coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050]Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage.

[0051] In order to overcome the problems of poor robustness, susceptibility to noise interference, and low recognition rate existing in existing micro-expression recognition methods, the inventors of the present invention propose a new micro-expression recognition method.

[0052] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. figure 1 A flow chart of a micro-expression recognition method in an embodiment of the present invention is shown. from figure 1 It can be seen that the method mainly includes the following steps:

[0053] Step S1, perform optical flow direction weighted histogram (H...

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 invention discloses a micro expression recognition method based on optical flow and Fisher Vector coding. The method comprises the following steps that: HOF (Histogram of Oriented Optical Flow) feature extraction is performed on a micro expression image sequence in a test sample, and first feature data X which are expressed by an equation described in the descriptions of the invention are obtained; Fisher Vector coding is performed on the first feature data X, so that second feature data F are obtained; and the second feature data F are identified based on a pre-trained classifier. According to the micro expression recognition method of the invention, the optical flow features are adopted to describe the micro movement of a micro expression; the optical flow features are coded through using Fisher Vector, so that desired information and variance information can be obtained; and therefore, the features of the micro expression can be expressed more fully, the influence of local noises can be reduced, and the robustness of the features of the micro expression can be improved, and the recognition rate of the micro expression can be improved.

Description

technical field [0001] The invention relates to the technical field of machine learning and pattern recognition, in particular to a micro-expression recognition method based on optical flow and FisherVector coding. Background technique [0002] The study of human facial expressions originated in the 19th century. Recently, foreign scholars Ekman and Erika conducted a study on facial mapping behavior, and verified that micro expressions can provide more comprehensive covert emotional information. Different from macro-expression, micro-expression is a kind of rapid expression with a short duration and low intensity. Although the duration is short, micro-expressions can better reveal the true emotions in people's hearts and provide a reliable basis for judging people's inner mental state. Therefore, they have important applications in the judicial system and clinical diagnosis. [0003] In foreign countries, the study of micro-expressions started earlier, not only proposing a...

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 Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06K9/46
CPCG06V40/168G06V40/174G06V40/172G06V10/507G06F18/21322G06F18/21324G06F18/2414G06F18/214
Inventor 贾伟光贲晛烨李传烨牟骏任亿庞建华刘嘉懿
Owner 济南中磁电子科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products