1. Technical Field
The present invention is related to a multi-directional positioning apparatus for mobile-phone camera shooting, in particular, to a panoramic shot taken by a mobile-phone camera.
2. Description of Related Art
Generally, panoramic shots can be categorized into: 360° cylindrical VR panoramic shots and 720° spherical VR panoramic shots; in which, the 360° cylindrical VR panoramic shot is one commonly known to the public for panoramic shooting. For such type of panoramic shots, a camera is positioned on a camera stand with a positioning point as an axle to allow equiangular positioning of the camera to rotate 360° and to take shots at various angles in sections. The angle of rotation during the shooting and the number of the camera shots taken at different positioning angles would vary depending upon the different focal lengths of the lenses of the camera, which can be calculated by an equation to determine the number of camera shots to be taken within the 360° angles for different focal lengths of lenses. For example, for lens with a focal length of 17 mm, 8 camera shots shall be taken at different positioning angles in sections (360°÷8=45°); in other words, the camera uses a positioning point as an axle and the shooter needs to be pressed once for every 45° turn of the camera such that a total of 8 camera shots are taken for the later image combination by an image software to form a 360° cylindrical VR panoramic shot.
In addition, for 720° spherical VR panoramic shots, a camera is positioned on a camera stand with the lens being positioned at a high angle, a low angle and an eye-level angle (0°) and positioned camera shooting in an equiangular rotation allows different camera shots to be taken as the camera rotates 360° and is positioned at different angles in addition to the camera shots taken at an up-right high angle of −90° and up-right low angle of +90° respectively. The number of camera shots taken in sections at different positioning angles of the high angle, the low angle, the eye-level angle (0°) and the equiangular shots in the 360° rotation would vary depending upon different focal lengths of the lenses of the camera, which can be calculated by an equation to determine the number of camera shots to be taken within the 360° angles for different focal lengths of lenses. For example, for lens with a focal length of 17 mm, 8 camera shots shall be taken respectively for the camera positioned at the low angle of +30° and the high angle of −30° in the 360° rotation in sections (360°÷8=45°); in other words, the camera uses a positioning point as an axle and the shooter needs to be pressed once every 45° turn of the camera in addition to the camera shots taken at the up-right high angle of −90° and the up-right low angle of +90° respectively such that a total of 18 camera shots are taken for the later image combination by an image software to form a 760° spherical VR panoramic shot.
The aforementioned method of camera shooting is a professional level of technique that requires trained professionals to perform such shooting. Furthermore, the equipment necessary to perform such professional level of panoramic shooting includes such as professional cameras, lenses, camera stand and camera angular rotational positioning stand, which can be very costly as tens of thousands to the general public while the skills required for operating such equipment would also be troublesome to the general public.
Currently, a lot of real estate developers, agents and other amateur camera users demand for panoramic shots; however, they are often barred from obtaining such professional panoramic shots due to the highly expensive equipment. As a result, most of such shots are performed by hired professionals. Nevertheless, the schedules for camera shooting by such professionals may not be easily arranged or accessed to the users, causing the working efficiency of the users to be poor and the costs thereof to be high.
Accordingly, there is a need for improvement to overcome the aforementioned drawback. As most mobile phones are equipped with a camera with shooting functions and are often of great shooting performance, the inventor seeks to achieve the aforementioned 360° cylindrical VR panoramic shots and 720° spherical VR panoramic shots by using the shooting functions of smartphone type of mobile-phone cameras. After years of research and development, the inventor provides a multi-directional positioning apparatus that can be easily operated.
The present invention is related to a multi-directional positioning apparatus for mobile-phone camera shooting, in particular, to a multi-directional positioning apparatus capable of clamping and positioning a mobile phone placed in a reverse orientation and capable of adjusting angles in discrete thereof in order to allow the lens of the camera to be at temporary positions of an eye-level angle (0°), low angle or high angle such that camera shots at different angles can be taken at predefined angles under temporary positioning in the 360° rotation in sections. The multi-directional positioning device allows the mobile-phone lens to be temporarily positioned at an eye-level (0°) and to take camera shots at predefined angles under temporary positioning in the 360° rotation in sections and also allows the mobile-phone lens to be adjusted for temporary positions at a low angle or a high angle and to take camera shots at predefined angles under temporary positioning in the 360° rotation in sections; and accordingly, these camera shots can then be further combined by an image software to form a 360° cylindrical VR panoramic shot or a 720° spherical VR panoramic shots.
One of the objectives of the present invention is: to allow the mobile-phone camera to be at an eye-level (0°) and to take camera shots at predefined angles under temporary positioning in the 360° rotation in sections such that these camera shots can be further combined with an image software to form a 360° cylindrical VR panoramic shot; alternatively, to allow the mobile-phone camera to be temporarily positioned at an eye-level (0°), a low angle and a high angle to take camera shots at predefined angles under temporary positioning in the 360° rotation in sections such that these camera shots can be further combined by an image software to form a 720° spherical VR panoramic shot, which is able to solve the problem of insufficient rooms for indoor mobile-phone camera shooting caused by insufficient camera angles thereof at the same time.
A rotational base 10 (please also refer to
A concavely-arched rail unit 106, comprises a bottom plate 106a with a center having an axial hole 106b provided for the screw bolt 104 to be inserted therein, a plurality of insertion holes 106c arranged corresponding to the insertion pins 103b of the rotational disk 103, and a plurality of concavely-arched rail tracks 106d protruded on a surface of the bottom plate 106a and spaced apart from each other; wherein a center of the concavely-arched rail track 106d comprises a positioning groove 106e, and the bottom plate 106a comprises lateral plates 106f on two lateral sides thereof.
A concavely-arched rail unit 107 comprises a bottom plate 107a with a bottom surface having a plurality of convexly-arched rail tracks 107b engaged correspondingly with each one of the plurality of concavely-arched rail tracks 106d of concavely-arched rail unit 106, and a locking pin 107c (please refer to
A securement platform 108 (please refer further to
Accordingly to the above, wherein the rotating handle 111 is a multi-angular tube provided between multi-angular screw heads of the screw bolts 110; a push rod 113 is further inserted into the guidance tube 109c, which comprises a top plate 113a on a front end thereof and a moveable axial slot 113b on a rear end thereof and provided to allow the front end of the screw bolt 110 to be fastened between top blocks 110a thereof and to attach the rear plate 113c with the axial hole to the push rod 113 such that the top blocks 110a are arranged rotatably therebetween without disengagement; whereby during the rotation of the rotating handle 111, the screw bolts 110 are rotated together to perform a rotational displacement to drive the push rod 113 to displace and (please refer further to