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NEC : Patent Issued for Image Processing Device, Image Processing Method, and Image Processing Program

06/17/2015 | 04:42pm US/Eastern

By a News Reporter-Staff News Editor at Computer Weekly News -- NEC CORPORATION (Tokyo, JP) has been issued patent number 9053522, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventor is Nakano, Gaku (Tokyo, JP).

This patent was filed on May 18, 2011 and was published online on June 9, 2015.

From the background information supplied by the inventors, news correspondents obtained the following quote: "There exists an expression method for making three-dimensional display by successively performing image switching (switching images of an object of interest shot in various angles) according to a user operation. In order to present an easily viewable three-dimensional image to the user, the object of interest is desired to be situated at the center of each image.

"Examples of methods for shooting images of an object of interest whole placing the object of interest at the center of each image have been described in Patent Literatures 1-3. In a shooting method described in the Patent Literature 1, the object of interest is shot in various angles by using a plurality of cameras and support parts for supporting the cameras.

"An image shooting device (photographing device) described in the Patent Literature 2 shoots the object of interest in various angles by using a plurality of cameras and a turntable connected to a computer.

"In an image input method described in the Patent Literature 3, the object of interest is shot in various angles by using a camera that is not fixed. A two-dimensional geometric transformation matrix for uniformizing the center position of the object of interest in each image is calculated from posture information on the camera detected by a posture detecting unit, and image transformation is conducted to each image by using the calculated two-dimensional geometric transformation matrix."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "Technical Problem

"In the methods and devices described in the Patent Literatures 1-3, however, not only a single camera but also a large number of devices (a plurality of cameras set at fixed positions, a turntable for setting the object of interest, an acceleration sensor, etc.) are necessary in order to place the object of interest at the center of each image.

"For example, in the shooting method described in the Patent Literature 1, a large number of devices such as a plurality of camera mounts (camera platforms) for fixing the cameras and support frames, support arms and posts for supporting the camera mounts are necessary as the support parts. Further, the photographer has to arrange the cameras in a single line, in a single arc, on a single plane or on a single shape and the preparation process necessary before the shooting is extremely complicated.

"In the image shooting device described in the Patent Literature 2, the operation of the turntable is controlled by the computer. The cameras are set at even intervals on an arc-shaped image shooting device setting table. The photographer does not have to have a detailed knowledge of cameras, machining, etc. since the shooting can be started only by setting the object of interest on the turntable. However, a large number of devices are necessary in addition to the camera similarly to the method of the Patent Literature 1.

"The image input method described in the Patent Literature 3 does not need a plurality of cameras or a setting table for fixing the cameras, and thus the photographer has only to shoot the object of interest with a camera. However, the image input method needs extra devices other than the camera such as a posture detecting device (acceleration sensor, magnetism sensor, etc.) similarly to the method/device of the Patent Literatures 1 and 2.

"It is therefore an exemplary object of the present invention to provide an image processing device, an image processing method and an image processing program capable of generating images for three-dimensional display from images shot with a single camera without the need of using other devices such as the turntable for setting the object of interest and the acceleration sensor.

"Solution to Problem

"In accordance with an exemplary aspect of the present invention, there is provided an image processing device which generates images for three-dimensional display of an object of interest from a plurality of transformation target images containing the object of interest, comprising: image display means which displays at least one transformation target image; first reference point receiving/determining means which receives information on first reference point candidates as candidates for first reference points serving for reference in input of geometric transformation according to a user operation, receives according to a user operation a determination signal targeted at the first reference point candidates displayed on the transformation target image based on the information on the first reference point candidates, and determines the first reference points based on the information on the first reference point candidates targeted by the received determination signal; second reference point receiving/determining means which determines second reference points serving for reference in output of the geometric transformation by receiving information on the second reference points; and geometric transformation means which outputs a transformed image by conducting the geometric transformation to the transformation target image based on the first reference points determined by the first reference point receiving/determining means and the second reference points determined by the second reference point receiving/determining means.

"In accordance with another exemplary aspect of the present invention, there is provided an image processing method for generating a three-dimensional image by conducting geometric transformation to each of transformation target images as a plurality of images containing an object of interest, comprising: displaying at least one transformation target image by using image display means; receiving information on first reference point candidates as candidates for first reference points serving for reference in input of geometric transformation according to a user operation; displaying the first reference point candidates on the transformation target image based on the received information on the first reference point candidates; receiving a determination signal targeted at the first reference point candidates displayed on the transformation target image according to a user operation; determining the first reference points based on the information on the first reference point candidates targeted by the received determination signal; determining second reference points serving for reference in output of the geometric transformation by receiving information on the second reference points; and outputting a transformed image for each transformation target image by conducting the geometric transformation to the transformation target image based on the determined first and second reference points.

"In accordance with another exemplary aspect of the present invention, there is provided an image processing program for generating a three-dimensional image by conducting geometric transformation to each of transformation target images as a plurality of images containing an object of interest, wherein the image processing program causes a computer to execute: a process of displaying at least one transformation target image by using image display means; a process of receiving information on first reference point candidates, as candidates for first reference points serving for reference in input of geometric transformation, which is inputted according to a user operation and thereby displaying the first reference point candidates on the transformation target image; a process of determining the first reference points based on the information on the first reference point candidates targeted by a determination signal when the determination signal, inputted according to a user operation for the first reference point candidates displayed on the transformation target image, is received; a process of determining second reference points serving for reference in output of the geometric transformation when information on the second reference points is received; and a process of conducting the geometric transformation to the transformation target image based on the first reference points and the second reference points.

"Advantageous Effects of the Invention

"According to the present invention, images for three-dimensional display can be generated from images shot with a single camera without the need of using other devices such as the turntable for setting the object of interest and the acceleration sensor."

For the URL and additional information on this patent, see: Nakano, Gaku. Image Processing Device, Image Processing Method, and Image Processing Program. U.S. Patent Number 9053522, filed May 18, 2011, and published online on June 9, 2015. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9053522.PN.&OS=PN/9053522RS=PN/9053522

Keywords for this news article include: NEC CORPORATION.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2015, NewsRx LLC

(c) 2015 NewsRx LLC, source Technology Newsletters

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