Face detection and tracking algorithm of infrared thermal image sequence

An image sequence and face detection technology, which is applied in the field of face detection and tracking of infrared thermal image sequences, and can solve problems such as rough fusion display and so on.

Inactive Publication Date: 2010-08-04
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, in most of the current applications of thermal imaging cameras, in addition to simple and rough fusion display, the visible light image information system has almost become a cheap decoration for thermal imaging cameras

Method used

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  • Face detection and tracking algorithm of infrared thermal image sequence
  • Face detection and tracking algorithm of infrared thermal image sequence
  • Face detection and tracking algorithm of infrared thermal image sequence

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Embodiment Construction

[0039] specific implementation plan

[0040] Step 1: Combining face detection algorithm of visible light image to realize face detection of infrared thermal image

[0041] Combining the face detection algorithm of visible light image to realize the face detection of infrared thermal image includes the following steps: detection of face area in visible light image, extraction of face template and face detection of infrared thermal image. Instructions are given below.

[0042] (1) Detection of the face area of ​​the visible light image

[0043] There are many mature face detection algorithms for visible light images at present, and these algorithms can all be applied to the present invention in principle. This specific embodiment adopts the Adaboost algorithm.

[0044] The Adaboost algorithm is a classifier algorithm. Its basic idea is to use the Harr-like features of samples for classifier training, and finally obtain a cascaded boosted classifier. After the classifier is t...

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Abstract

The invention provides face detection and tracking algorithm of the infrared thermal image sequence, which is characterized by carrying out face detection on the infrared thermal images in combination with the face detection algorithm of the visible-light images and carrying out face tracking on the infrared thermal image sequence in combination with the face tracking algorithm of the visible-light image sequence. The algorithm provided by the invention can realize selective target (face) temperature measuring and selective target (face reaching the warning temperature) tracking and temperature measuring. The algorithm provided by the invention avoids the difficulty of whole registration of the infrared thermal images and the visible-light images with different properties. The algorithm is applied to the thermal infrared imagers and can organically combine the infrared thermal image information systems and the visible-light image information systems of the thermal infrared imagers, construct an image information system with certain intelligent information processing capability and expand the application field of the thermal infrared imagers.

Description

technical field [0001] The invention relates to the technical field of pattern recognition, in particular to an algorithm for face detection and tracking of infrared thermal image sequences. Background technique [0002] Since people discovered infrared radiation, people began to use various methods to detect infrared radiation, and applied them according to the characteristics of infrared radiation, and made various infrared detectors one after another. From the application point of view, infrared detectors can be divided into two categories, one is infrared night vision devices, and the other is infrared thermometers. In the civil field, the most widely used infrared thermometer is the uncooled microbolometer (also known as infrared thermal imager), which can convert the temperature distribution image of the target object into The video image, and the temperature of the object is obtained through temperature calibration. With the epidemic of SARS, bird flu and other infe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/10G06K9/62G06T7/00
Inventor 马争鸣张文亮田军杨晓峰谭恒良肖颖童随兵
Owner SUN YAT SEN UNIV
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