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Device and method for recognizing facial expressions, image processing device and system

A face and expression technology, applied in the field of image processing, can solve the problems of unreliable facial expression recognition, reducing the accuracy of facial expression recognition, etc.

Active Publication Date: 2021-09-14
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, sometimes, the extracted features are not reliable for facial expression recognition, which will lead to lower accuracy of facial expression recognition

Method used

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  • Device and method for recognizing facial expressions, image processing device and system
  • Device and method for recognizing facial expressions, image processing device and system
  • Device and method for recognizing facial expressions, image processing device and system

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Embodiment Construction

[0032] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the following description is merely illustrative and exemplary in nature, and in no way intended to limit the invention and its application or uses. The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in the embodiments do not limit the scope of the present invention unless specifically stated otherwise. Additionally, techniques, methods and devices known to those skilled in the art may not be discussed in detail but, where appropriate, should be a part of this description.

[0033] Note that like reference numbers and letters refer to like items in the drawings, so once an item is defined in one drawing, it need not be discussed in the following drawing.

[0034] In the typical method described above, the difference between face shapes will not be considered in the pr...

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Abstract

The present invention provides a device and method for recognizing facial expressions, an image processing device and system. A device for recognizing an expression of a face in a face area of ​​an image, comprising: a unit configured to detect feature points of the face in the face area of ​​the image; and configured to determine based on the detected feature points A unit of the face shape of the face in the face area; a unit configured to determine the group to which the face in the face area belongs based on the determined face shape and a predefined shape group; The determined group corresponds to a pre-generated first model and features extracted from at least one of the face regions to determine facial expressions in the face region, wherein the at least one region is determined in conjunction with The group corresponds to the marked region in the pre-generated first model. According to the present invention, the accuracy of facial expression recognition will be improved.

Description

technical field [0001] The present invention relates to image processing, and in particular to devices and methods, image processing devices and systems such as for recognizing facial expressions. Background technique [0002] In the traditional facial expression recognition technology, the typical method is to extract features from some regions in the image, and then recognize the corresponding facial expressions by using these features and a pre-generated expression model. In one implementation, the region from which features are extracted is the region that typically produces facial expressions. And, such regions are generated from multiple sample images together with pre-generated expression models by using a learning-based approach. For example, Figure 1A The area indicated by the dotted line is the corresponding area generated together with the pre-generated expression model. [0003] A typical facial expression recognition method corresponding to the above-mentione...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/174G06V40/175G06V40/171G06V40/165G06T7/50G06T7/73G06T7/90
Inventor 孙东慧吴波李献胡琦
Owner CANON KK