阅读说明：本技术 一种高清裸眼3d立体视频刺激下的双眼眼动采集系统 (Binocular eye movement acquisition system under stimulation of high-definition naked eye 3D (three-dimensional) video ) 是由 刘昱 孙景林 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种高清裸眼3D视频刺激下的双眼眼动采集系统,包括3D视频成像模块(110)、双眼眼动采集模块(120)和电路控制模块(130),其中：所述3D视频成像模块(110)用于显示3D视频刺激,同时将测试者的视野限制在3D视频显示区域内,保证眼动数据的有效性；所述双眼眼动采集模块(120)用于高精度同步采集测试者在3D视频刺激下的眼动数据；所述电路控制模块(130)用于控制3D视频的播放系统及眼动数据存储与编码。本发明具有良好的观看舒适度,可高精度同步采集3D视频刺激下的双眼眼动数据,眼动信息更加丰富,在提供裸眼3D立体视频成像的同时,限制观看者的视野,保证眼动数据的有效性,价格低廉,可大规模应用与眼动追踪领域的相关研究。(The invention discloses a binocular eye movement acquisition system under high-definition naked eye 3D video stimulation, which comprises a 3D video imaging module (110), a binocular eye movement acquisition module (120) and a circuit control module (130), wherein: the 3D video imaging module (110) is used for displaying 3D video stimulation, and simultaneously limiting the visual field of a tester in a 3D video display area to ensure the validity of eye movement data; the binocular eye movement acquisition module (120) is used for synchronously acquiring eye movement data of a tester under 3D video stimulation at high precision; the circuit control module (130) is used for controlling a playing system of the 3D video and storing and encoding the eye movement data. The invention has good watching comfort, can synchronously acquire binocular eye movement data under the stimulation of a 3D video with high precision, has richer eye movement information, limits the visual field of a viewer while providing naked eye 3D video imaging, ensures the validity of the eye movement data, has low price and can be applied to the related research in the field of eye movement tracking in a large scale.)

1. The utility model provides a binocular eye moves collection system under high definition bore hole 3D video stimulation which characterized in that, this system includes 3D video imaging module (110), binocular eye moves collection module (120) and circuit control module (130), wherein:

the 3D video imaging module (110) is used for displaying 3D video stimulation, and simultaneously limiting the visual field of a tester in a 3D video display area to ensure the validity of eye movement data;

the binocular eye movement acquisition module (120) is used for synchronously acquiring eye movement data of a tester under 3D video stimulation at high precision;

the circuit control module (130) is used for controlling a playing system of the 3D video and storing and encoding the eye movement data.

2. The binocular eye movement acquisition system under high-definition naked eye 3D video stimulation according to claim 1, wherein the 3D video imaging module (110) further comprises a non-transparent shell (111) and left and right video playing systems; a baffle (116) is arranged in the middle of the non-transparent shell (111) and is used for connecting a left video playing system and a right video playing system which are symmetrically and parallelly arranged; the left and right video playing systems are symmetrically provided with two independent and parallel cavity structures of the same display screen (112), the same one-way lens (113), the same lens (114) and the same audio device (115).

3. The binocular eye movement acquisition system under high definition naked eye 3D video stimulation according to claim 2, wherein the lens (114) and the display screen (112) satisfy the relation: l is₁/W₁＝L₂/W₂Wherein L is₁Is the length of the lens (114), W₁Is the width, L, of the lens (114)₂Is the length of the display screen (112) and is the width of the display screen (112) W₂。

4. The binocular eye movement acquisition system under the stimulation of the high-definition naked eye 3D video according to claim 2, wherein an included angle between an optical axis of the lens (114) and the one-way lens (113) is 45 degrees.

5. The binocular eye movement acquisition system under the stimulation of the high-definition naked eye 3D video according to claim 2, wherein the optical axis of the lens (114) is perpendicular to the intersection point of the display screen, and the distance between the lens (114) and the display screen (112) is

6. The binocular eye movement acquisition system under the stimulation of the high-definition naked eye 3D video according to claim 2, wherein the binocular eye movement acquisition module (120) further comprises a left-eye camera and a right-eye camera (121), a multi-path synchronous acquisition coding device (122) and a light source (123), the two identical cameras (121) are parallel to the lens (114), are arranged on the rear side of the shell (111) and are used for acquiring eye moving images of an observer, and the multi-path synchronous acquisition coding device (122) is arranged on the rear side of the camera (121) and is used for synchronously coding video images acquired by the left-eye camera and the right-eye camera; two identical light sources (123) are placed above the lens (114) for providing a light source for eye movement acquisition.

7. The binocular eye movement acquisition system under high-definition naked eye 3D video stimulation according to claim 2, wherein the circuit control module (130) is arranged on the rear side of the non-transparent shell (111).

8. The binocular eye movement collecting system under the stimulation of the high-definition naked eye 3D video according to claim 2, wherein the circuit control module (130) further comprises a video encoding and decoding module (131), an image conversion module (132), a storage module (133) and a wireless connection module (134), which are respectively independent chips soldered onto a circuit board.

Technical Field

The invention relates to the technical field of eye movement instruments and meters, in particular to a binocular eye movement collecting device under naked eye high-definition 3D video stimulation.

Background

An Eye Tracker (ET) is a commonly used instrument in Eye movement analysis, and generally uses an imaging device such as a display to present a specific image stimulus to a subject and collect Eye movement information of the subject under observation of the specific image stimulus. Then, the eye tracker analyzes the subject using a plurality of indexes. Possible test metrics include: fixation, total time of interest for each content in the stimulus image; panning, the interval when jumping from one image content to another; the watching duration is continuous watching duration of the region of interest; the local area of interest of the testee, the scanning path of the image content of the testee and the like. By collecting eye movement information and applying different algorithms to analyze and calculate various test indexes, the eye tracker can provide analysis reports for different applications and researches.

Currently, eye movement instruments in the market are mainly divided into two types, namely desktop type eye movement instruments and head-mounted type eye movement instruments. The desktop type eye tracker is in a non-contact type and is arranged in or connected to the display. The head-mounted eye tracker consists of a light hat or glasses with only the eye tracker inside and a built-in video camera. However, currently, both eye trackers are eye tracking under 2D video stimulation, except that head-mounted eye trackers are under study in the AR/VR field. Researches show that the eye movement data under the stimulation of the 3D stereoscopic video can provide more abundant eye movement information. And current wear-type AR/VR display device has increased the bearing of human head, and the exit pupil distance is very little to make glasses tired easily, will cause light-headedness and dizzy scheduling problem after the use. In addition, the existing eye tracker does not concentrate the sight of the tested person in the testing area, which results in the collection of ineffective and redundant binocular eye movement data.

In recent years, attention and investment of various fields and manufacturers around the world are drawn to household appliances such as 3D stereoscopic display players and televisions, and none of the existing 3D stereoscopic display playing devices has a good stereoscopic effect and is a mainstream in the market. The reason why we can feel stereoscopic vision is that human eyes perceive external images with parallax, and the brain interprets the parallax of the eyes to judge the distance of an object and generate stereoscopic vision, so that the basis of 3D stereoscopic display is to reproduce parallax in an artificial way. Generally, 2 cameras are arranged in parallel to simulate two eyes, 2 photos with slight differences are taken at the same time, and the left eye and the right eye respectively see different images, so that stereoscopic vision is simulated. Based on this, various 3D stereoscopic display technologies are applied, and the mainstream thereof is to wear stereoscopic glasses to achieve a stereoscopic imaging effect. In order to abandon the research theme of watching 3D video by wearing glasses with naked eyes, the watching equipment of an observer can clearly separate the visual lines of left and right eyes, and the observer does not need to adjust the visual lines to capture stereoscopic impression by feeling, so most people can adapt to the visual line, and the left and right eyes watch different pictures through the left and right groups of screens to generate parallax to present stereoscopic pictures.

Disclosure of Invention

In order to solve the technical problems, the invention provides a binocular eye movement acquisition device under the stimulation of a high-definition naked eye 3D video, and the binocular eye movement acquisition device with the structure having the advantages of reasonable design, high image quality, limited visual field and the like is designed.

The invention relates to a binocular eye movement acquisition system under high-definition naked eye 3D video stimulation, which comprises a 3D video imaging module 110, a binocular eye movement acquisition module 120 and a circuit control module 130, wherein:

the 3D video imaging module 110 is configured to display a 3D video stimulus, and limit the visual field of the tester in a 3D video display area, thereby ensuring the validity of eye movement data;

the binocular eye movement acquisition module 120 is used for high-precision synchronous acquisition of eye movement data of a tester under 3D video stimulation;

the circuit control module 130 is used for controlling a playing system of the 3D video and storing and encoding the eye movement data.

The 3D video imaging module 110 further comprises a non-transparent housing 111 and left and right video playing systems; a baffle 116 is arranged in the middle of the non-transparent shell 111 and is used for connecting a left video playing system and a right video playing system which are symmetrically and parallelly arranged; the left and right video playing systems are symmetrically provided with two independent and parallel cavity structures of the same display screen 112, the same one-way lens 113, the same lens 114 and the same audio device 115.

The lens 114 and the display screen 112 satisfy the relation: l is₁/W₁＝L₂/W₂Wherein L is₁Is the length of the lens 114, W₁Is the width, L, of the lens 114₂Is the length of the display screen 112, is the display screen 112Has a width of W₂。

The optical axis of the lens 114 forms an angle of 45 ° with the unidirectional lens 113.

The optical axis of the lens 114 is perpendicular to the intersection point of the display screen, and the distance between the lens 114 and the display screen 112 is

θ₁The entrance facet angle for the lens 114.

The binocular eye movement acquisition module 120 further comprises a left eye camera 121, a right eye camera 121, a multi-path synchronous acquisition coding device 122 and a light source 123, wherein the two same cameras 121 are parallel to the lens 114 and arranged on the rear side of the shell 111 for acquiring eye movement images of an observer, and the multi-path synchronous acquisition coding device 122 is arranged on the rear side of the cameras 121 for synchronously coding video images acquired by the left and right cameras; two identical light sources 123 are placed above the lens 114 to provide a light source for eye movement collection.

The circuit control module 130 is disposed at the rear side of the non-transparent housing 111.

The circuit control module 130 further includes a video codec module 131, an image conversion module 132, a storage module 133, and a wireless connection module 134, which are respectively independent chips soldered to a circuit board.

By adopting the technical scheme, the invention has the beneficial effects that:

(1) high-definition naked eye 3D video imaging can be provided, parameters are strictly designed, and the high-definition naked eye 3D video imaging device has good watching comfort;

(2) the binocular eye movement data under the stimulation of the 3D video can be synchronously acquired at high precision, and the eye movement information is richer;

(3) the method has the advantages that when naked eye 3D video imaging is provided, the visual field of a viewer is limited, and the validity of eye movement data is guaranteed;

(4) the required equipment has simple structure and low price, and can be applied to the related research in the field of eye movement tracking on a large scale.

Drawings

Figures 1 to 2 are block diagrams of the overall structure of a binocular eye movement acquisition system under the stimulation of a high-definition naked eye 3D stereoscopic video,

fig. 3 is an optical path diagram of a binocular eye movement acquisition system under the stimulation of a high-definition naked eye 3D stereoscopic video.

Reference numerals:

100. the binocular eye movement acquisition system comprises a binocular eye movement acquisition module 110, a 3D video imaging module 120, a binocular eye movement acquisition module 130, a circuit control module 111, a non-transparent shell 112, a display screen 113, a one-way lens 114, a lens 115, an audio device 116, a baffle 121, a left eye camera, a right eye camera, a multi-channel synchronous acquisition coding device 122, a multi-channel synchronous acquisition coding device 123, a light source 131, a video coding and decoding module 132, an image conversion module 133, a storage module 134 and a wireless connection module.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and examples. Preferred embodiments of the present invention are shown in the drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

As shown in fig. 1 and fig. 2, the overall structure of the binocular eye movement collecting system under the high-definition naked eye 3D video stimulation is schematically illustrated. The binocular eye movement collecting system 100 includes a 3D video imaging module 110, a binocular eye movement collecting module 120, and a circuit control module 130.

The 3D video imaging module 110 is configured to display a 3D video stimulus, and limit the visual field of the tester in a 3D video display area, thereby ensuring the validity of the eye movement data.

The binocular eye movement acquisition module 120 is used for high-precision synchronous acquisition of eye movement data of a tester under 3D video stimulation.

The circuit control module 130 is used for controlling a playing system of the 3D video and storing and encoding the eye movement data.

The 3D video imaging module 110 includes: a non-transparent housing 111 and left and right video playback systems. A baffle 116 is arranged in the middle of the non-transparent shell 111 and is used for connecting a left video playing system and a right video playing system which are symmetrically and parallelly arranged; the left and right video playing systems are symmetricalThe two independent and parallel cavities of the same display screen 112, the same one-way lens 113, the same lens 114 and the same audio device 115 are arranged, so that the glasses can be conveniently watched by naked eyes, the watching field of vision is limited, and the design is reasonable; the incident light surface angle of the lens 114 is theta₁Is 18 degrees to 20 degrees, and the angle of view theta of the light-emitting surface of the lens 114 is₂The angle is 48-50 degrees, so that the viewing angle is large, the exit pupil distance is long, the head can shift left and right during viewing, the aberration in the shift range is within the tolerance of human eyes, and the head can move up, down, left and right during viewing;

the length of the lens 114 is L₁Width of W₁. The length of the display screen 112 is L₂Width of W₂. The lens 114 and the display screen 112 satisfy the following relationship: l is₁/W₁＝L₂/W₂. The included angle between the optical axis of the lens 114 and the one-way lens 113 is 45 degrees, and the distance between the lens 114 and the display screen 112 is

The distance from the lens 114 to the intersection point of the optical axes of the unidirectional lens 113 is L₃The distance from the intersection point of the optical axes of the one-way lenses 113 to the midpoint of the display screen 112 is L₄And satisfies the following relationships: 0.35<L₃/L₄<1.5, preferably L₃/L₄0.5, making the device small.

Preferably, the optical axis of the lens 114 is perpendicular to the intersection of the display screen.

Preferably, the display screen 112 is a 5-6 inch liquid crystal screen.

Preferably, the resolution of the display screen 112 is greater than 1280 × 720, preferably 1920 × 1080, 3840 × 2160, so that the viewed image has high resolution and clear image quality.

The circuit control module 130 includes a video codec module 131, an image conversion module 132, a storage module 133, and a wireless connection module 134, which may be formed by soldering separate chips to a circuit board. The circuit control module 130 is disposed at the rear side of the non-transparent housing 111.

As shown in fig. 3, it is an optical path diagram of a binocular eye movement collecting system under the stimulation of a high-definition naked eye 3D stereoscopic video according to the present invention.

The binocular eye movement collecting module 120 includes: the device comprises a left-eye camera 121, a right-eye camera 121, a multi-channel synchronous acquisition coding device 122 and a light source 123, wherein the two same cameras 121 are parallel to the lens 114 and arranged on the rear side of the shell 111 for acquiring eye moving images of an observer, and the multi-channel synchronous acquisition coding device 122 is arranged on the rear side of the camera 121 for synchronously coding video images acquired by the left camera and the right camera; two identical light sources 123 are placed above the lens 114 to provide a light source for eye movement collection.

Preferably, the light source 123 is an infrared lamp light source.

Preferably, the camera 121 is a high-resolution infrared camera, and is configured to acquire high-resolution eye movement data of the left eye and the right eye synchronously.