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Fresnel lens group and pyroelectric infrared human body posture estimation system comprising Fresnel lens group

A technology of Fresnel lens and human body posture, which is applied in the direction of lens, calculation, computer parts, etc., can solve the problem that it is difficult to effectively extract human limbs, etc., and achieve the effect of improving light gathering ability and measurement accuracy

Active Publication Date: 2020-06-09
JINAN UNIVERSITY
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Problems solved by technology

[0004] Another object of the present invention is to provide a pyroelectric infrared human body posture estimation system, which can detect human body posture quickly and at low cost in complex scenes, and is used to solve the problem that existing detection systems are difficult to effectively extract information about human body limbs problem, improve the measurement accuracy of the system

Method used

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  • Fresnel lens group and pyroelectric infrared human body posture estimation system comprising Fresnel lens group
  • Fresnel lens group and pyroelectric infrared human body posture estimation system comprising Fresnel lens group
  • Fresnel lens group and pyroelectric infrared human body posture estimation system comprising Fresnel lens group

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Embodiment

[0049] Such as Figure 4 As shown, the Fresnel lens group obtained for the above process design, the Fresnel lens group includes several Fresnel lens blocks, and the Fresnel lens blocks are distributed in a human shape, including the head area lens block 11, the trunk The head area lens block 12, the hand area lens block, and the leg area lens block correspond to collecting infrared light from the human head, torso, hands, and legs. The Fresnel lens group divides the detection area corresponding to each part of the human body. The blank part is the dark area, and the lens part is the bright area. The purpose is to make the detection bright area fit and cover the limbs and trunk of the human body as much as possible. Each Fresnel lens The block is responsible for collecting infrared light from different parts of the human body, and the lens blocks are named head, hand, leg and torso according to this function.

[0050] Further, the hand area lens block includes a hand area len...

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Abstract

The invention relates to the technical field of infrared detection and tracking, in particular to a Fresnel lens group and a pyroelectric infrared human body posture estimation system comprising the Fresnel lens group. The Fresnel lens group comprises a plurality of Fresnel lens blocks which are distributed in a human shape and comprise a head area lens block, a body area lens block, hand area lens blocks and leg area lens blocks and correspondingly collect infrared light of the head, the body, the hands and the legs of the human body. The pyroelectric infrared human body posture estimation system comprises the Fresnel lens group and a pyroelectric detector. The human body posture estimation system for the human body motion posture detection scene is provided by changing the layout of theFresnel lens blocks in the Fresnel lens group to adapt to the human body shape, and the measurement precision of the system is improved.

Description

technical field [0001] The invention relates to the technical field of infrared detection and tracking, and more specifically, to a Fresnel lens group and a pyroelectric infrared human body posture estimation system including the Fresnel lens group. Background technique [0002] Pyroelectric infrared sensing system for human body posture estimation is a sensing system that can detect infrared rays emitted by the human body and output electrical signals. It is widely used in human body feature recognition, orientation, etc. detection and other fields. The principle is that there is a certain correspondence between the human body movement form and the human body infrared radiation energy change. By analyzing the electrical signal output by the infrared sensor, the relevant characteristic information of the human body movement can be extracted, so as to realize the recognition of different movement states of the human body. Provides a low-cost solution for human pose estimatio...

Claims

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Application Information

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IPC IPC(8): G02B3/08G02B7/02G06K9/00
CPCG02B3/08G02B7/021G06V40/23
Inventor 张军何烨林姚汐棉
Owner JINAN UNIVERSITY
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