JP2006287942A - Image display apparatus and image display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display apparatus and image display method, in which a desired image region in photographed video data can be normally displayed, if the video data contains distortion aberrations. <P>SOLUTION: The image display apparatus displays video data 24, containing distortion aberrations and a planar reproduced image 29, resulting from correcting the distortion aberrations for video data in a display area 25, that is a desired image region in a portion of these video data 24 on a monitor 28 and in response to designating the display area 25, based on the video data displayed on the monitor 28, the distortion aberrations are corrected for the video data within the desired region. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display apparatus and an image display method capable of correcting and displaying video data including distortion.

  As shown in FIG. 9, the conventional video camera is shot after the autofocus operation is performed by directing the lens 12 side of the video camera 11 whose shooting range is specified toward the subject 13 and performing a desired zoom operation. Take a picture. Since the shooting range W of the lens 12 is specified, when the subject 13 moves, it is necessary to perform shooting while ensuring the shooting range W by following the movement. As shown in FIG. 10, the photographed video 14 can reproduce and display on the monitor 15 the subject 13 having the same size as when a specific photographing range is captured as a planar image.

  However, in the conventional technique, since the photographer must always check the shooting range during shooting, the burden on the photographer is greater than that of a still camera that finishes shooting in a short time, and the shooting is troublesome. A special shooting technique is necessary to feel and shoot. In addition, since information outside the captured range is missing, there is a problem that if the shooting fails, it cannot be reproduced over the past.

  Therefore, there is a problem to be solved that it is possible to shoot a wide field of view without being restricted by the shooting range, and to make it possible to normally reproduce the shot image within a desired range.

  In order to solve the above-described problems, an image display device according to the present invention provides distortion aberration for video data including distortion that varies in density depending on location, and video data in a desired video area that is a part of the video data. Display means for displaying on the monitor at least one of the image obtained by the correction, and the display area indicating the desired area based on the video data displayed on the monitor, the desired area Correction means for correcting distortion of the video data in the region.

  In the present invention, the video data including the distortion is video data taken in a semispherical field of view.

  In the present invention, the video data including the distortion and the video corrected by the correcting means are moving images.

  An image display device according to another aspect of the present invention provides fisheye video data obtained by photographing using a fisheye lens, and fisheye video data of a desired video region that is a part of the fisheye video data. In response to designating display means for displaying at least one of an image obtained by correcting distortion on a monitor, and a display area indicating the desired area based on fisheye video data displayed on the monitor Correction means for correcting distortion of the fish-eye video data in the desired area.

  In the present invention, the fish-eye video data and the video corrected by the correction means are moving images.

  In the present invention, when the fisheye video data is being displayed, the correction means is responsive to designating a display area indicating the desired region based on the fisheye video data displayed on the monitor. Then, the distortion aberration is corrected for the fisheye image data in the desired region.

  In the present invention, the fisheye video data is image data recorded on a video camera.

  In the present invention, the fisheye lens is detachable.

  An image display method according to the present invention includes video data including distortion aberration having different densities depending on locations, and an image obtained by correcting distortion aberration for video data of a desired video area that is a part of the video data. And displaying the at least one of the video data in the desired area on the basis of the video data displayed on the monitor and designating a display area indicating the desired area based on the video data displayed on the monitor. And a step of correcting distortion.

  According to another aspect of the present invention, there is provided an image display method for fisheye video data obtained by photographing using a fisheye lens and fisheye video data of a desired video region that is a part of the fisheye video data. Displaying at least one of an image obtained by correcting distortion aberration on a monitor and designating a display area indicating the desired area based on fisheye video data displayed on the monitor Correcting distortion of the fish-eye video data in the desired area.

  Next, an embodiment of a recording / playback apparatus using a fisheye lens according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the recording / playback apparatus using a fish-eye lens according to the present invention can be obtained by photographing means using a fish-eye lens, that is, a video camera 11 having a fish-eye lens 21 attached to a lens 12 and photographing. Of the fish-eye video data that has been created, it comprises means for selecting a necessary part of the fish-eye video data and correcting the distortion to form a reproduced image, that is, a reproduced moving image unit 22. The fisheye lens 21 has a structure that can be freely attached to and detached from the lens 12 of the video camera 11, and the photographing range W1 is a wide semispherical photographing range.

  The reproduction moving image unit 22 includes a distortion aberration calculating unit 23 for distorting fisheye video data captured by the video camera 11, a display area analyzing unit 26 for analyzing data in the display area 25 of the fisheye video data 24, The monitor 28 includes an operation stick 27 for designating the display area 25. The other voice input mechanism and operation mechanism are omitted. On the monitor 28, the semicircular fish-eye video data 24 is projected on a part of the screen of the monitor 28, and a part of the projected data is indicated by the operation stick 27 and the display area 25 is designated. A planar reproduction image 29 obtained by calculating the distortion aberration of the designated fisheye image data 24 is displayed. Thereafter, the operation stick 27 may be operated based on the reproduced image 29 without projecting the hemispherical fish-eye video data 24.

  The operation of the recording / playback apparatus using the fisheye lens having such a configuration will be described with reference to FIG.

  First, image data that is fish-eye video data captured by the video camera 11 is captured (step ST11). As shown in FIG. 3, the fish-eye video data 24 is generated as a hemispherical video, and the density differs depending on the location. Therefore, the fish-eye video data 24 is completely different from the human visual field. In other words, the image captured using the fisheye lens is displayed as a flat image of a semicircular spherical shape. As for the content of the displayed image, the distortion aberration of the near region R1 including the center point P of the hemisphere is small, and the distortion aberration of the far region R2 far from the center point P is large. Accordingly, since the distortion aberration varies depending on the position where the display area 25 is designated, the distortion aberration calculator 23 calculates the distortion aberration corresponding to the designated area.

  Returning to FIG. 2, next, the area of the display area 25 is defined by the display area information with respect to the captured fish-eye video data, and the distortion aberration is calculated (step ST2). As shown in FIG. 3, the display area information designates a desired video area in the fish-eye video data 24, and is designated one after another by operating the operation stick 27 of the reproduction moving image part 22, and the display area is sequentially displayed. If 25 is designated, the moving image of the desired reproduced image 29 is completed. Even if the designated display area 25 is left as it is, if the video in the display area 25 includes a moving image, the reproduced image becomes a moving image by calculating and displaying the distortion aberration. Further, when there is no instruction of the display area 25 by the operation stick 27, as shown in FIG. 4, the position with the least distortion, which is the approximate center position of the fisheye image data 24, is reproduced.

  When the display area 25 is instructed in this way, the distortion of the image in the instructed display area 25 is calculated and sequentially displayed on the monitor 28 as a flat reproduction image 29 (step ST13). In this manner, since the images on which the distortion has been calculated are sequentially reproduced and displayed on the monitor 28, it is possible to display an image as if a specific range was specified at the time of shooting.

  Next, a specific example of a video camera provided with a fisheye lens, which is a recording / playback apparatus using a fisheye lens, will be described with reference to the drawings.

  A first specific example is a surveillance camera device as shown in FIG. This surveillance camera device has a configuration in which a video camera 11 having a fisheye lens 21 is disposed at a position where the state of the ceiling 31 or the floor 30 of the floor 30 having a predetermined area can be seen. Since the arranged video camera 11 is provided with the fisheye lens 21, the entire floor 30 can be photographed without moving the photographing position. If an image viewed from a desired position is specified using the captured data, and distortion aberration is calculated and reproduced, an image in a desired area can be reproduced.

  A second specific example is a video camera provided with a fisheye lens provided in a vehicle as shown in FIGS.

  A video camera device equipped with a fish-eye lens in the car fixes the camera in the car and shoots in the front direction, so that all the scenery seen from the inside of the car and the scenery seen from the left and right windows do not move the video camera. You can shoot with The video thus taken is identified with the operation stick 27, the display area 25 is specified, the distortion aberration is calculated and reproduced and displayed on the monitor 28, whereby a video 32 that is a landscape seen from the left car window (see FIG. 6). ), A moving image 33 (see FIG. 7) that is an image seen from the front car window of the drive, and a moving image 34 (see FIG. 8) that is a scenery image seen from the right car window can be reproduced and displayed. Therefore, even if it is a momentary video missed during driving or a video that could not be seen sufficiently, an image in a favorite direction can be reproduced and viewed later at a favorite time.

  As described above, by taking a picture using a fisheye lens, the taken picture can be taken over a wide field of view equivalent to a hemisphere, and distortion necessary for the reproduction is corrected. Thus, it is possible to reproduce a normal planar image of a desired portion.

  More specifically, by using the fisheye lens according to the present invention, the shooting range can be captured in a semicircular shooting field of view. A desired video can be selected from among them and a moving image can be reproduced. As a result, the problem of being unable to shoot and the shooting method are not only simplified, but also a wide range of shots can be taken depending on the application, so that the shooting range can be secured with a very simple configuration. is there.

1 is an overall view schematically showing a recording / reproducing apparatus using a fisheye lens according to the present invention. It is a block diagram for reproducing | regenerating the image | video image | photographed with the same apparatus. It is explanatory drawing which showed a mode that the display area for reproducing the image | photographed image | video was reproduced | regenerated with distortion aberration. It is explanatory drawing which showed a mode that the display area was designated and reproduced | regenerated among the fisheye image data which image | photographed the same. It is explanatory drawing which showed the 1st specific example which installed the video camera provided with the fisheye lens in the floor. It is one frame of the reproduction | regeneration image | video seen from the vehicle window of the left side of the 2nd example provided with the video camera provided with the fisheye lens in the car. It is one frame of the reproduction | regeneration image | video seen from the front car window of the 2nd example provided with the video camera provided with the same fisheye lens in the car. It is one frame of the reproduction | regeneration image | video seen from the vehicle window of the right side of the 2nd example provided with the video camera provided with the fisheye lens in the car. It is explanatory drawing which showed the imaging | photography range which image | photographs with the video camera which does not equip a fisheye lens. It is explanatory drawing which showed a mode that the image | video image | photographed with the video camera which does not mount | wear with a fisheye lens was reproduced and displayed on the monitor.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11; Video camera, 12; Lens, 21; Fisheye lens, 22; Playback moving image part, 23; Distortion aberration calculating part, 24; Fisheye image data, 25; Display area, 26; 28; Monitor, 29; Reproduced image, 30; Floor, 31; Ceiling, 32; Reproduced video from the left car window, 33; Movie from the front car window, 34; Video from the right car window

Claims (15)

Display that displays on a monitor at least one of video data including distortion aberration that varies in density depending on the location, and an image obtained by correcting distortion aberration for video data in a desired video area that is a part of the video data Means,
Correction means for correcting distortion of the video data in the desired area in accordance with the display area indicating the desired area based on the video data displayed on the monitor; An image display device comprising: The image display device according to claim 1,
The image display device characterized in that the video data including the distortion is video data shot in a semispherical field of view. The image display device according to claim 1,
The image display apparatus according to claim 1, wherein the video data including the distortion and the video corrected by the correcting unit are moving images. At least one of fisheye video data obtained by photographing using a fisheye lens and an image obtained by correcting distortion aberration for fisheye video data of a desired video region that is a part of the fisheye video data Display means for displaying on a monitor;
Based on the fish-eye video data displayed on the monitor, the distortion aberration is corrected for the fish-eye video data in the desired area in response to designating a display area indicating the desired area. An image display device comprising: correcting means for performing The image display device according to claim 4,
The image display apparatus, wherein the fish-eye video data and the video corrected by the correcting means are moving images. The image display device according to claim 4,
The correction means is configured to specify the display area indicating the desired area based on the fisheye video data displayed on the monitor when the fisheye video data is displayed. An image display device that corrects the distortion aberration for the fish-eye video data in the region. The image display device according to claim 4,
The fisheye video data is image data recorded on a video camera. The image display device according to claim 4,
An image display device, wherein the fisheye lens is detachable. A step of displaying on a monitor at least one of video data including distortion aberration having different density depending on a location and an image obtained by correcting distortion aberration for video data of a desired video area which is a part of the video data When,
Correcting distortion of the video data in the desired area in response to designating a display area indicating the desired area based on the video data displayed on the monitor. An image display method comprising: The image display method according to claim 9, comprising:
The image display method according to claim 1, wherein the video data including distortion is video data shot in a semispherical field of view. The image display method according to claim 9, comprising:
The image display method according to claim 1, wherein the video data including the distortion and the corrected video are moving images. At least one of fisheye video data obtained by photographing using a fisheye lens and an image obtained by correcting distortion aberration for fisheye video data of a desired video region that is a part of the fisheye video data Displaying on the monitor;
Based on the fish-eye video data displayed on the monitor, the distortion aberration is corrected for the fish-eye video data in the desired area in response to designating a display area indicating the desired area. An image display method comprising the steps of: The image display method according to claim 12,
An image display method, wherein the fisheye video data and the corrected video are moving images. The image display method according to claim 12,
The correcting step is performed when a display area indicating the desired area is designated based on the fish-eye video data displayed on the monitor when the fish-eye video data is displayed. An image display method comprising correcting the distortion for the fisheye image data in the desired region. The image display method according to claim 12,
The image display method, wherein the fisheye video data is image data recorded in a video camera.

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