News Column

Researchers Submit Patent Application, "Lens System for 3d Video Taking", for Approval

February 6, 2014

By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C. , VerticalNews journalists report that a patent application by the inventors SASAKI, Tadashi ( Saitama , JP); MISAWA , Atsushi ( Saitama , JP), filed on September 18, 2013 , was made available online on January 23, 2014 . The patent's assignee is FUJIFILM Corporation . News editors obtained the following quote from the background information supplied by the inventors: "In recent years, flat TV receivers capable of displaying 3D video to viewers (what is called 3D-compatible) have been being developed enthusiastically. Also in the TV industry, the necessity of generating 3D video data that are in such a form as to enable display of 3D video to viewers has increased. It is expected that the demand for 3D-shooting-compatible TV camera systems capable of producing 3D video data will increase. "Three-dimensional video data can be produced by simultaneously producing two video data having a parallax. In general, 3D shooting systems in which two imaging units are spaced from each other in the left-right direction are used for this purpose (refer to Patent documents 1-3). "In such 3D shooting systems, the distance between the optical axes of optical systems included in the two respective imaging units is called a baseline length and the parallax between two video data obtained by the two imaging units can be adjusted by changing the baseline length. "For example, Patent document 1 discloses a technique that in a single camera having two imaging units an optimum baseline length is calculated according to a zoom lens position and a focus lens position and the distance between the imaging units is controlled so as to become equal to this baseline length. "Patent document 2 discloses a technique that in a camera which performs 3D shooting using two optical systems and a single imaging device an optimum baseline length between the two optical systems is calculated from a focal length and a subject distance and the distance between the two optical systems is controlled so as to become equal to this baseline length. "Patent document 3 discloses the following technique in a system having two cameras. When a user sets a desired subject distance, a vergence angle and a baseline length between the two cameras are calculated on the basis of the subject distance and displayed on a display unit and the vergence angle and the baseline length between the two cameras are changed." As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "Problems to Be Solved by the Invention "The systems disclosed in Patent documents 1-3 can produce 3D video data having three-dimensionality that is suitable for a subject to be shot because the baseline length can be changed according to subject-dependent camera shooting conditions such as a zoom lens position, a focus lens position, a focal length, a subject distance, etc. However, each videographer has his or her own tastes for video. Therefore, systems in which three-dimensionality is determined automatically according to camera shooting conditions that are determined depending on a subject are not necessarily high in usability to videographers. "Patent documents 1 and 2 disclose configurations in which the baseline length can be changed manually. However, great skill is necessary to produce good 3D video data by changing the baseline length manually irrespective of camera shooting conditions that are determined depending on a subject. It is desired that good 3D video data be produced by a simple manipulation. "The present invention has been made in the above circumstances, and an object of the invention is therefore to provide a lens system for 3D video taking which makes it possible to produce good 3D video data having desired three-dimensionality with a simple manipulation. "Means for Solving the Problems "A lens system for 3D video taking according to the invention is a lens system for 3D video taking which has two lens devices and in which a baseline length of the two lens devices can be changed, comprising a three-dimensionality manipulation unit for commanding of a degree of three-dimensionality of 3D video; and a baseline length calculation unit for calculating a baseline length that is most suitable to produce 3D video data that conforms to shooting conditions of camera devices to which the two lens devices are attached with the degree of three-dimensionality specified through the three-dimensionality manipulation unit using information indicating the degree of three-dimensionality specified through the three-dimensionality manipulation unit and the shooting conditions, and outputting information of the calculated baseline length. "Advantages of the Invention "The present invention can provide a lens system for 3D video taking which makes it possible to produce good 3D video data having desired three-dimensionality with a simple manipulation. BRIEF DESCRIPTION OF THE DRAWINGS "FIG. 1 is a drawing for description of the embodiment of the invention which shows a general configuration of a 3D video taking system. "FIG. 2 is a drawing showing, in detail, the internal configuration of a focus controller 31 of the 3D video taking system shown in FIG. 1. "FIG. 3 is a drawing showing appearances of the focus controller 31 and a focus knob 32 of the 3D video taking system shown in FIG. 1. "FIG. 4 is a drawing showing the internal configurations of a lens device 10R and a camera device 20R of the 3D video taking system shown in FIG. 1. "FIG. 5 is a flowchart showing how the 3D video taking system shown in FIG. 1 operates." For additional information on this patent application, see: SASAKI, Tadashi; MISAWA , Atsushi. Lens System for 3d Video Taking. Filed September 18, 2013 and posted January 23, 2014 . Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4209&p=85&f=G&l=50&d=PG01&S1=20140116.PD.&OS=PD/20140116&RS=PD/20140116 Keywords for this news article include: FUJIFILM Corporation . Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering arts and entertainment, please see HispanicBusiness' Arts & Entertainment Channel



Source: Politics & Government Week


Story Tools