Shooting equipment for facial local feature image

Abstract

The utility model relates to shooting equipment for facial local feature images, which comprises a hollow spherical full-light-source system illuminating inwards, the bottom of the full-light-source system is provided with an inlet hole with the opening size larger than that of the head, and a remote control guide rail and a camera are fixed in the full-light-source system. And the camera can be controlled by the remote control guide rail to be positioned at any point in the upper hemispherical surface in the full light source system. According to the utility model, the remote control guide rail is used for controlling the position of the camera in the all-light source system, the camera can be repositioned for many times after moving, the accuracy is ensured, and the remote control guide rail can be positioned at any point in the upper hemispherical surface in the all-light source system; a light source irradiating the face is more stable and uniform through the full-light-source system, and analysis of the face color in the later period is more accurate; through the variable filter system, more images with different polarization angles except parallel polarization and cross polarization can be obtained at a time so as to meet different research requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of photographing equipment, in particular to a photographing equipment for facial local feature images. Background Art

[0002] At present, most solutions for full-face photography use cameras with fixed angles, which makes it difficult to accurately capture local facial features. At the same time, the light source of the full-face photography equipment also illuminates the face from the corresponding angles or from both sides. When it is necessary to capture local facial features, there are problems such as uneven lighting, which has a certain impact on skin color analysis. On this basis, the photography of local facial feature images is mostly done by photographers holding the camera close to the camera. It is difficult to fix the shooting angle, and it is impossible to ensure the repeatability of the shooting. The light source problem is still difficult to solve, so it is difficult to achieve precise capture of the details of local facial features. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a photographing device for facial local feature images, so as to realize the precise photographing of facial local feature images.

[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a device for shooting facial local feature images, including an inwardly illuminating full light source system, the full light source system is a hollow sphere, and an entrance hole with an opening size larger than the head is opened at the bottom, a remote control guide rail and a camera are fixed in the full light source system, and the camera can be positioned at any point in the upper hemisphere inside the full light source system through the control of the remote control guide rail.

[0005] Preferably, the remote control guide rail includes a circular track, a first semi-circular track and a second semi-circular track. The circular track is fixed in the full light source system at an inner ring of a hemispherical surface parallel to the plane where the entrance hole is located. Both ends of the first semi-circular track are provided with remote control sliders slidably connected to the circular track, which are used to control the first semi-circular track to rotate with the axis of the circular track as the center. The back of the second semi-circular track is provided with a remote control slider slidably connected to the first semi-circular track, which is used to control the second semi-circular track to move along the first semi-circular track. The back of the camera is provided with a remote control slider slidably connected to the second semi-circular track, which is used to control the camera to move along the first semi-circular track.

[0006] Preferably, the camera is provided with a variable filter system, including a polarized light source and a UV light source arranged on both sides of the camera, and the polarized light source, UV light source and the camera lens serving as auxiliary light sources are all provided with a linear polarized filter.

[0007] Preferably, the full light source system is an integrating sphere light source.

[0008] Beneficial Effects

[0009] The utility model provides a device for photographing local feature images of faces, which has the following beneficial effects: the position of a camera in a full light source system is controlled by a remote control rail, and the camera can be repositioned multiple times after being moved to ensure accuracy, and the remote control rail can be positioned at any point in the upper hemisphere of the full light source system; the full light source system makes the light source irradiating the face more stable and uniform, so that the later analysis of the facial color is more accurate; and the variable filter system can obtain images with more different polarization angles other than parallel polarization and cross polarization at one time to meet different research needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A stereoscopic perspective image of a facial local feature image taken by a shooting device.

[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the inner remote control rail from above.

[0012] Among them, 1-entrance hole; 2-circular track; 3-first semicircular track; 4-second semicircular track; 5-camera; 6-variable filter system; 7-full light source system; 8-remote control slider.

[0013] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0015] like Figure 1 As shown, the utility model provides a device for photographing local facial feature images, including an inwardly illuminating full light source system 7, wherein the full light source system 7 is a hollow sphere with an entrance hole 1 having an opening size larger than that of the head at the bottom, and a remote control rail and a camera 5 are fixed inside the full light source system 7, wherein the camera 5 can be positioned at any point within the upper hemisphere inside the full light source system 7 by being controlled by the remote control rail.

[0016] In a specific embodiment, the remote control guide rail includes a circular track 2, a first semi-circular track and a second semi-circular track. The circular track 2 is fixed in the full light source system 7 at the inner ring of the hemispherical surface parallel to the plane where the entrance hole 1 is located. Both ends of the first semi-circular track are provided with remote control sliders 8 that are slidably connected to the circular track 2, which are used to control the first semi-circular track 3 to rotate with the axis of the circular track 2 as the center. The back of the second semi-circular track is provided with a remote control slider 8 that can be slidably connected to the first semi-circular track, which is used to control the second semi-circular track 4 to move along the first semi-circular track. The back of the camera 5 is provided with a remote control slider 8 that can be slidably connected to the second semi-circular track, which is used to control the camera 5 to move along the first semi-circular track. The remote control slider 8 moves along the circular slide rail, the first semi-circular track 3, and the second semi-circular track 4 respectively through wireless remote control to control the camera 5 to be positioned at any point in the upper hemisphere inside the full light source system 7. The remote control slider 8 includes a slider body, a pulley is provided at the bottom of the slider body, and the pulley is connected to a servo motor provided inside the slider body. The staff can drive the pulley to move or stop on each slide rail by remotely controlling the servo motor.

[0017] The camera 5 is connected to a wireless module, and can transmit the captured pictures to a computer system in real time so that the staff can perform post-processing. The camera 5 and the remote control slider 8 can be disassembled and can be charged after disassembly.

[0018] In a specific embodiment, the camera 5 is provided with a variable filter system 6, including a polarized light source and a UV light source arranged on both sides of the camera 5. The polarized light source, the UV light source and the camera 5 shooting lens serving as auxiliary light sources are all provided with a wired polarized filter. The filter in front of the camera 5 can be rotated and switched by motor control, so that the device can capture polarized images of various polarization angles.

[0019] In a specific embodiment, the full light source system 7 is an integrating sphere light source. The integrating sphere is a hollow sphere with an inner wall coated with a white diffuse reflection material, also known as a photometric sphere, a light flux sphere, etc. One or more windows are opened on the sphere wall, which are used as light inlet holes and receiving holes for placing light receiving devices. The inner wall of the integrating sphere should be a good spherical surface, and it is usually required that its deviation from the ideal spherical surface should not be greater than 0.2% of the inner diameter. The inner wall of the sphere is coated with an ideal diffuse reflection material, that is, a material with a diffuse reflection coefficient close to 1. In this way, the light entering the integrating sphere is reflected multiple times by the inner wall coating, forming a uniform illumination on the inner wall.

Claims

1. A device for capturing facial local feature images, comprising an inward-illuminating full light source system, characterized in that: The full light source system is a hollow sphere with an entrance hole at the bottom whose opening size is larger than the head. A remote control rail and a camera are fixed inside the full light source system. The camera can be positioned at any point within the upper hemisphere inside the full light source system through the control of the remote control rail.

2. The device for photographing local facial feature images according to claim 1, characterized in that: The remote control guide rail includes a circular track, a first semi-circular track and a second semi-circular track. The circular track is fixed in the full light source system at the inner ring of the hemispherical surface parallel to the plane where the entrance hole is located. Both ends of the first semi-circular track are provided with remote control sliders slidably connected to the circular track, which are used to control the first semi-circular track to rotate with the axis of the circular track as the center. The back of the second semi-circular track is provided with a remote control slider slidably connected to the first semi-circular track, which is used to control the second semi-circular track to move along the first semi-circular track. The back of the camera is provided with a remote control slider slidably connected to the second semi-circular track, which is used to control the camera to move along the first semi-circular track.

3. The device for photographing local facial feature images according to claim 1, characterized in that: The camera is provided with a variable filter system, including a polarized light source and a UV light source arranged on both sides of the camera. The polarized light source, the UV light source and the camera shooting lens serving as auxiliary light sources are all provided with wired polarized filters.

4. The device for photographing local facial feature images according to claim 1, characterized in that: The full light source system is an integrating sphere light source.

Images