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

Testing apparatus and method for special object

A detection device and subject technology, applied in three-dimensional object recognition, instrument, character and pattern recognition, etc., can solve problems such as inability to meet, difficult classification problems, and unsatisfactory speed, and achieve high performance and improved speed. Effect

Active Publication Date: 2007-04-25
OMRON CORP +1
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a classification problem is too difficult, and it needs to construct a more complex classifier to solve it. Therefore, although good detection accuracy has been achieved, the speed is not ideal.
On the other hand, the Decision Tree structure emphasizes the differences between faces of different poses. First, a classifier is constructed to classify them, and then they are separated from non-faces. The speed of this method is ideal, but the accuracy And the robustness is not ideal, this is because the multi-classification of face pose itself is a problem that is not easy to solve, and this method hopes to use the decision tree to quickly determine the face pose will inevitably lose a certain degree of accuracy and practical performance
In general, the coexistence of consistency and difference between faces in different poses is a key problem that cannot be overcome by the above two methods.
[0012] In fact, for face images in real life, RIP and ROP are common and exist at the same time, and the existing methods cannot meet the requirements of practical applications, such as the need for rotation invariance of MVFD
Although these problems can be solved by rotating the image and applying MVFD several times, it increases the computational complexity and false positives

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
  • Testing apparatus and method for special object
  • Testing apparatus and method for special object
  • Testing apparatus and method for special object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] As shown in Fig. 2, the present invention provides a kind of multi-view face detection method, and it comprises the following steps, the face space is divided into the sub-face space of multiple view angles; Rotate outward to obtain the sub-face space of five perspectives: frontal face, half-left face, full-left face, half-right face, and full-right face. The space is rotated in the plane by ±45°, so that the sub-face space of each viewing angle can get two sub-face spaces rotated in the plane (such as the in-plane rotation of ±30°), so that the face space is divided into 15 perspectives of sub-face space

[0050] The out-of-plane rotation shown in this embodiment is the rotation about the Z-axis, but the rotation about the X-axis may also be used. When rotating with the X axis as the axis, the face in the image is downward, and the appearance changes as in the upward direction. According to the definition of the axes, a rotation about the X axis corresponds to an in-...

Embodiment 2

[0130] As shown in Figures 8a and 8b, the present invention also provides a multi-view face detection device, which includes a face sample input unit for inputting a face image including a sub-face space;

[0131] A breadth-first search tree structure detector, wherein there is a root branch node in the tree structure, the root branch node covers the divided sub-face space of all perspectives and has multiple branches, each branch corresponds to a sub-branch node, The sub-branch nodes cover at least one perspective sub-face space, wherein:

[0132] The sub-branch node of the sub-face space covering more than one viewing angle has multiple branches, each branch corresponds to a sub-branch node of the adjacent lower layer, and each sub-branch node of the adjacent lower layer covers at least one sub-face space of the viewing angle, The sub-branch nodes of the sub-face space covering only one viewing angle are the leaf nodes of the tree structure;

[0133] Each of the above branc...

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

This invention relates to a method and device to catch object from multiple point, which divides special capture space into multiple sub special capture spaces and divides the sub special capture space into multiple spaces from multiple visional point and comprises the following steps: establishing tree shape tester with one large branch; the branch covers all sub space with multiple branches with each one responding to one branch; adopting vector induction formula to train each branch into determine vector to determine each point to those down layer point; testing the sent point object as special object with relative visional angle.

Description

technical field [0001] The present invention relates to an effective technology applied to a device and method for detecting a specific subject or a part of a subject, such as a person, an animal, or an object, contained in a captured image. Background technique [0002] As a conventional technique, there is a technique of detecting a specific subject or a part of a subject, such as a person, an animal, or an object, contained in a captured image. As an example of such a conventional technique, there is a technique of detecting the face of a person from a captured image, that is, a face detection technique. [0003] Face detection has two difficulties: one is the internal changes of the face, such as the difference in face shape; the other is the external changes of the face, such as rotation in the plane. Therefore, only by finding some related algorithms and achieving real-time application effects can a face detection device with practical application value be constructed...

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): G06K9/00G06V10/764
CPCG06K9/6257G06K9/6282G06K9/00208G06K9/00228G06V20/647G06V40/161G06V10/764G06V10/7747G06F18/24323G06F18/2148
Inventor 艾海舟黄畅李源劳世红
Owner OMRON CORP
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