JP2013162505A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus eliminating the influence of occurrence of a ghost and the like, in an imaging apparatus having two lenses.SOLUTION: The imaging apparatus having a plurality of lenses includes: an imaging sensor for obtaining an image from each of the lenses; output means for outputting the image from each sensor; and comparison means for comparing the output from each sensor, and corrects the brightness of a part of the image, based on the brightness of the other output images, when only in a specific output image, the brightness of a part of the image has a large difference, based on the comparison result.

Description

  The present invention relates to an image pickup apparatus, and more particularly to an image pickup apparatus including two interchangeable lenses for 3D shooting.

  Conventionally, in order to perform 3D shooting, alignment is performed using two cameras and a rig, and shooting is performed with a parallax adjusted by a mirror or the like. At this time, there is a problem that alignment takes a lot of time and labor. Furthermore, there is a limit to the distance that the cameras can be brought closer to each other depending on the body, hood, etc., and there is a problem that images with narrow parallax cannot be taken.

  As a means for solving the above problem, a 3D imaging device in which two camera units are built in a camera has been recently put on the market. In this case, it is possible to bring the lens closer without being disturbed by the positioning of the photographing and the body. As a countermeasure against a ghost that is likely to occur at that time, there is a method in which an extensible and light-shielding means is provided between two lens pairs (Patent Document 1).

Japanese Patent No. 3107959 specification

  However, in the prior art disclosed in Patent Document 1 described above, it is necessary to attach an extendable hood, which is very difficult in terms of cost and configuration. In addition, it is necessary to install between the pair of lenses, there is no versatility, and the size of the hood that can be placed between the lenses is inevitably limited to prevent vignetting in the imaging range, and ghosts can be prevented well. Can not.

  Accordingly, an object of the present invention is to provide an imaging apparatus that eliminates the influence of ghosts and the like in an imaging apparatus having two lenses.

  In an imaging apparatus having a plurality of lenses, an imaging sensor that acquires an image from each lens, an output unit that outputs an image from each sensor, a comparison unit that compares outputs from each sensor, and a comparison result Based on the above, when there is a large difference in the brightness of a part of an image only in a specific output image, the brightness of a part of the image is corrected based on the brightness of another output image.

  According to the present invention, it is possible to eliminate the influence of ghosts and the like in an imaging apparatus having two lenses.

The block diagram concerning embodiment of this invention 1 is a front perspective view of an imaging apparatus according to an embodiment of the present invention. 1 is an upper cross-sectional view of an imaging apparatus according to an embodiment of the present invention. One captured image diagram of the imaging apparatus according to the embodiment of the present invention Another captured image diagram in the imaging apparatus according to the embodiment of the present invention Captured image diagram after image processing in imaging device according to embodiment of the present invention The flowchart concerning embodiment of this invention

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram according to an embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the imaging apparatus 100 includes a lens A unit 101, a lens B unit 102, an image imaging unit 2, an image processing unit 3, a compression / decompression processing unit 4, a display unit 105, a recording / reproduction processing unit 6, and card control. Unit 7, memory 11, memory control unit 12, CPU 13, operation unit 14, image comparison unit 15, input / output unit 16, and power supply control unit 17.

  The functional blocks are connected to each other via a data bus 18 so that data communication can be performed.

  In such an imaging apparatus 100, the memory 11 has a program storage area and a data work area, is used by time sharing in each functional block via the data bus 18, and is controlled and managed by the memory control unit 12. Has been.

  The CPU 13 is a central processing circuit that performs overall control of the entire imaging apparatus 100 by executing a predetermined program.

  The operation unit 14 has a function of instructing the CPU 13 to perform an operation based on a key operation from the user.

  The memory card 19 is a detachable flash memory such as an SD card or a compact flash (registered trademark), and records shooting data and the like.

  The power supply control unit 17 includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, and detects whether or not a battery is attached, the type of battery, and the remaining battery level. The battery 23 is a lithium ion battery or the like, and supplies power to the imaging device 100.

  The image comparison unit 15 obtains each data captured by the image capturing unit 2 from the lens A unit 101 and the lens B unit 102 by using the data bus 18, compares the respective images, and compares whether there is a difference. Then, the data is output to the image processing unit 3. The image processing unit 3 performs image processing based on the comparison data from the image comparison unit 15. The image processed by the image processing unit 3 is displayed on the display unit 105 via the compression / decompression processing unit 4. Further, the image data is stored in the memory card unit 19 via the recording / playback processing unit 6 and the card control unit 7.

  FIG. 2 is a perspective view of the imaging apparatus according to the embodiment of the present invention, and FIG. 3 is a schematic view from above of the imaging apparatus according to the embodiment of the present invention.

  The main body 100 has a lens A portion 101 and a lens B portion 102 attached to the lens mounting portions 103 and 104, and a ghost preventing hood portion 110 attached to cover the respective lenses. The field angle range 120 of the lens A unit 101 and the field angle range 121 of the lens B unit 102 overlap as shown in FIG.

  The lens-to-lens distance between the lens A portion 101 and the lens B portion 102 is preferably made narrower to make a powerful image, particularly in 3D shooting, so that the angle of view ranges 120 and 121 overlap. desirable.

  In order to prevent the hood part 110 from appearing in each of the angle-of-view ranges 120 and 121, the hood partition part 110b disposed between the lenses with respect to the hood outer peripheral part 110a of the hood part 110 has a length in the optical axis direction. Need to be shortened or almost eliminated.

  However, when the hood part 110 is configured as described above, for example, when the light source 130 outside the angle of view of the respective lens angle ranges 120 and 121 comes to the position of FIG. Although the light ray 131 is cut by the portion 110a, the hood partition portion 110b cannot cut the light ray 131 on the lens B portion 102 side, and a ghost is generated.

  Images actually taken are shown in Fig. 4-6. 4 shows an image acquired through the lens A unit 101, and FIG. 5 shows an image acquired through the lens B unit 102.

  Since the light source 130 is located at the position shown in FIG. 3, a ghost 200 caused by the light source 130 not shown in FIG. 4 is generated in FIG. 5, and a part of the image to be photographed cannot be seen.

  By comparing the ghost 200 as shown in FIG. 5 with the image of FIG. 4 having no ghost, the influence of the ghost and the like can be eliminated from the final image of FIG.

  FIG. 7 is a flowchart of processing in this embodiment. After the start, each image is acquired through the lenses 101 and 102 in step S1. In step S2, the image comparison unit 15 confirms whether or not a part of the acquired image has a brightness equal to or higher than a threshold value. Display and save the final image. If the brightness is equal to or greater than the threshold, the images are compared by the image comparison unit 15 in step 3, and if both have brightness equal to or greater than the threshold in the same position, the light source is within the imaging range in step 4. In step 7, the final image is displayed and stored through the image processing unit 3 as it is. If it is not at the same position or only on one side, the bright part is determined to be a ghost in step 5, and in step 6, the image on the higher brightness side is corrected with the lower image, and step 7 to display and save the final image.

  By repeating these operations on the captured image, an image desired by the photographer can be obtained even with a twin-lens camera in which the hood is difficult to configure.

In addition, regarding the final display in the present embodiment, the images may be displayed in parallel, or the images that appear to be ghosts among the images may be highlighted.
For final display and storage, the corrected image can be displayed and stored in 3D format.

  Furthermore, although the interchangeable lens is shown in the drawing of the present embodiment, a ghost can be prevented with the same configuration even with a lens integrated with the main body.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

2... Image capturing unit 3... Image processing unit 4... Compression / decompression processing unit 15... Image comparison unit 100. Lens B mounting portion 105 Display portion 110 Hood portion 110a Hood outer portion 110b Hood partition portion 120 Lens A field angle range 121 Lens B field angle range 130 Light source
131 ... rays

Claims (3)

  In an imaging apparatus having a plurality of lenses, an imaging sensor that acquires an image from each lens, an output unit that outputs an image from each sensor, a comparison unit that compares outputs from each sensor, and a comparison result Based on the above, when there is a large difference in brightness of a part of an image only in a specific output image, the brightness of the part of the image is corrected based on the brightness of the other output image apparatus.   In an imaging apparatus having a plurality of lenses, an imaging sensor that acquires an image from each lens, an output unit that outputs an image from each sensor, a comparison unit that compares an output from each sensor, and a captured image Based on the result of comparison with the display unit that displays, if there is a large difference in the brightness of part of the image only in a specific output image, multiple images are displayed on the previous display unit at the same time. An imaging device characterized by highlighting. In an imaging apparatus having a plurality of lenses, an imaging sensor that acquires an image from each lens, an output unit that outputs an image from each sensor, a comparison unit that compares outputs from each sensor, and a comparison result Based on the above, when there is a large difference in the brightness of a part of an image only in a specific output image, the imaging device displays a warning that the image is not intended by the photographer on the display unit.