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Actual pupil distance measuring method, device and equipment based on monocular camera

A measurement method and actual distance technology, which is applied in the field of actual interpupillary distance measurement based on a monocular camera, and can solve problems such as difficulty in obtaining object depth information and inability to measure accurately

Active Publication Date: 2020-10-30
IFLYTEK CO LTD
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Problems solved by technology

[0004] However, due to the 2D imaging characteristics of the monocular camera, it is difficult to obtain the depth information of the object. For example, the gaze origin information (that is, the spatial position of the human eye) cannot be accurately measured, and the human eye positioning information is related to the driver's eye features. Strong correlation, especially the interpupillary distance parameter in eye features, so how to accurately obtain the driver's actual interpupillary distance through a monocular camera is directly related to the accuracy of subsequent human eye positioning

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[0120] Based on the above embodiments and their preferred solutions, those skilled in the art can understand that, in actual operation, the present invention is applicable to various implementation modes, and the present invention uses the following carrier as a schematic illustration:

[0121] (1) an actual interpupillary distance measurement device based on a monocular camera, which may include:

[0122]one or more processors, memory, and one or more computer programs, wherein the one or more computer programs are stored in the memory, the one or more computer programs include instructions, when the instructions are When the device (processor) described above is executed, the device is made to perform the steps / functions of the foregoing embodiments or equivalent implementation manners.

[0123] (2) A readable storage medium, on which a computer program or the above-mentioned device is stored. When the computer program or the above-mentioned device is executed, the computer ...

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Abstract

The invention discloses an actual pupil distance measuring method, device and equipment based on a monocular camera. According to the concept, a plurality of reference points and a monocular camera are preset, specific imaging parameters are extracted from a plurality of images when a driver gazes at each reference point, camera parameters and reference point position parameters are then combined,the actual distance between the midpoint of two pupils of the driver and the camera is obtained, a pupil distance value corresponding to each image is solved based on the actual distance and each parameter, all pupil distance values based on a plurality of reference points and a plurality of images are obtained in the way, and finally rigid body parameters, namely real pupil distance characteristic information of the driver, of the driver individual is calibrated and saved through a preset pupil distance standard and all the pupil distance values. High-precision pupil distance information ofa driver individual can be obtained based on a low-cost monocular camera, and a reliable and accurate data basis is provided for subsequent human eye positioning operation.

Description

technical field [0001] The invention relates to the technical field of driver state monitoring, in particular to a method, device and equipment for measuring actual pupil distance based on a monocular camera. Background technique [0002] In the field of driver state monitor (Driver State Monitor, DSM), it involves the monitoring technology of the driver staring at the target point or target area. [0003] Specifically, the driver's gaze target during driving can be determined by the target position or area and the driver's gaze ray. Among them, the target position or area can be determined by pre-calibrating the camera and three-dimensional modeling of the cockpit; the driver's gaze ray can be composed of the driver's gaze direction and the origin of the gaze, and the driver's gaze direction can be collected by the monocular camera It is obtained by analyzing the driver's face image. [0004] However, due to the 2D imaging characteristics of the monocular camera, it is di...

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Application Information

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IPC IPC(8): G01B11/14A61B3/11G06K9/00
CPCG01B11/14A61B3/111G06V20/597
Inventor 高万军李超龙吴子扬柳燕飞汪华锋和卫民刘俊峰
Owner IFLYTEK CO LTD
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