JP2016042025A - Three-dimensional image information capturing processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system that carries out processing of capturing three-dimensional image information on a subject by using a laser beam with a simple configuration.SOLUTION: A three-dimensional image information capturing processing system 1 includes: scanning means 10 for irradiating a three-dimensional subject with a laser beam to scan the subject; image information capturing means 20 for capturing light reflected on the subject obtained by the scanning means 10 with a light receiving element to obtain three-dimensional information on the subject; an image storage and management center 50 that stores and manages the three-dimensional image information on the subject obtained by the image information capturing means 20; and image information processing means 30 that obtains the three-dimensional image information on the subject stored in the image storage and management center 50 and carries out image processing on the information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a 3D image information capture processing system that captures 3D image information of a subject using laser light and performs image processing.

  For example, in an electronic product having a camera function such as a home digital compact camera, a mobile phone, and a smartphone, a CCD image sensor or a CMOS image sensor is used as a solid-state image sensor for image input.

  This CCD image sensor or CMOS image sensor changes light energy into electric charge and accumulates it, and takes out the accumulated electric charge as pixel data constituting an image (Patent Document 1). Images captured by various functions such as “camera shake correction” and “underwater mode” are optimized and captured. Furthermore, by incorporating a wireless LAN communication unit, captured images can be transferred to a personal computer or a smartphone, or directly uploaded to an SNS.

JP-A-10-136267

  Thus, it is possible to optimize an image with various functions before imaging, but a solid-state imaging device such as a CCD or a CMOS captures light two-dimensionally and collects the planar light. Therefore, there is a limit to image processing after imaging. For example, when viewing the image after taking the image, even if the focus of the image is moved to a different position from when the image was taken, or even if you forgot to set to `` Underwater mode '' even if the image was taken underwater There is a limit to processing such as switching to “underwater mode” during browsing.

  The present invention has been made in view of the above points, and provides a three-dimensional image information capture processing system capable of capturing and processing three-dimensional image information of a subject using laser light with a simple configuration. It is intended.

  In order to solve the above-described problems and achieve the object, the present invention is configured as follows.

The invention according to claim 1 is a scanning unit that irradiates and scans a three-dimensional subject with laser light;
Image information capturing means for capturing reflected light from the subject obtained by the scanning unit with a light receiving element;
An image storage management center for storing and managing the three-dimensional image information of the subject obtained from the image information capturing means;
Image information processing means for obtaining and processing the three-dimensional image information of the subject stored in the image storage management center;
A three-dimensional image information capture processing system comprising:

According to a second aspect of the present invention, the image information processing means includes:
The three-dimensional image information capture processing system according to claim 1, wherein processing for changing an imaging mode is possible.

According to a third aspect of the present invention, the image information processing means includes:
The three-dimensional image information capture processing system according to claim 1, wherein processing for changing a focal position is possible.

According to a fourth aspect of the present invention, the image information processing means includes:
The three-dimensional image information capture processing system according to claim 1, wherein information communication with the image storage management center is possible by a wireless LAN function.

  With the above configuration, the present invention has the following effects.

  According to the first aspect of the present invention, the three-dimensional image information of the subject obtained from the image information capturing means using the laser beam is stored in the image storage management center, and the three-dimensional image information of the subject stored in the image storage management center. By obtaining the image and processing the image, it is possible to capture and process the image of the three-dimensional image of the subject using laser light with a simple configuration.

  According to the second aspect of the present invention, the processing for changing the imaging mode is possible, and the captured image is changed according to the preference, the usage, etc. Can be processed properly.

  According to the third aspect of the present invention, the process of changing the focal position is possible, and it is preferable to change the focal position of the captured information while viewing it later. Can be processed properly.

  In the invention described in claim 4, although a large amount of information is captured at a time, it is stored in the image storage management center and communicated with the image storage management center by the wireless LAN function to obtain three-dimensional image information to perform image processing. can do.

It is a figure which shows schematic structure of a three-dimensional image information acquisition processing system. It is a figure explaining the principle of focusing. It is a figure explaining an imaging principle. It is a figure explaining a scanning system. It is a figure explaining a light receiving element.

  Embodiments of the three-dimensional image information capture processing system according to the present invention will be described below. The embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.

  A three-dimensional image information capture processing system according to this embodiment will be described with reference to FIGS. 1 is a diagram illustrating a schematic configuration of a 3D image information capturing processing system, FIG. 2 is a diagram illustrating a principle of focusing, FIG. 3 is a diagram illustrating an imaging principle, and FIG. 4 is a diagram illustrating a scanning method. FIG. 5 is a diagram illustrating the light receiving element.

  The three-dimensional image information capture processing system 1 according to this embodiment includes a scanning unit 10, an image information capture unit 20, an image information processing unit 30, and an image storage management center 50. The scanning means 10 includes a light source 11 that emits laser light from a horizontal direction or a vertical direction, a pinhole 12 that narrows down the laser light from the light source 11, and a half mirror that transmits part of incident light and reflects part of it. 13 and the objective lens 14, and scans by irradiating laser light toward the three-dimensional subject 40.

  The image information capturing unit 20 includes a light receiving element 21 that receives laser light and a pinhole 22, and the light reflected by the subject obtained by the scanning unit 10 is captured by the light receiving element 21 through the pinhole 22.

  The image information capturing unit 20 sends the obtained 3D image information of the subject to the image storage management center 50, and the image information processing unit 30 obtains the 3D image information of the subject stored in the image storage management center and performs image processing. To do. The image information capturing unit 20 can always store the image information in the image storage management center 50 although the amount of information captured at a time is large. The image information processing means 30 obtains three-dimensional image information of a subject stored in the image storage management center 50 by a wireless LAN function and performs image processing. For example, the image information processing means 30 is accessed by remote operation from a smart phone or a personal computer. Image processing is performed based on instructions from the mode change unit 60 and the focus position change unit 61. That is, the image information processing means 30 can perform processing for changing the imaging mode to the normal imaging mode, the strobe imaging mode, the underwater imaging mode, the night scene imaging mode, and the like by the instruction from the imaging mode changing unit 60, and the captured information On the other hand, the user can prefer the image picked up by changing the shooting mode even while browsing later, and appropriately process the image according to the usage.

  Further, the image information processing means 30 can perform processing for changing the focal position in accordance with an instruction from the focal position changing unit 61. For example, the focal position is changed in multiple steps or steplessly in response to one release operation. The image data generation unit generates digital image data for the subject image at the changed focal points of N points different from each other, and by editing the generated digital image data, the user can select a desired image after completion of shooting. Easily produce blurry images. For captured information, it is possible to like an image picked up by changing the focal position while browsing later, and to appropriately perform image processing according to the application. Further, the image information processing means 30 can perform image processing such as enlarging the image or cutting out a part of the image.

(light source)
A gas laser or a semiconductor laser is used as the laser light of the light source. The gas laser discharges by applying a high voltage to a glass tube sealed with He—Ne (helium / neon) gas or Ar (argon) gas to bring the gas into a plasma state (inversion distribution state of electrons). Light is reflected many times between mirrors provided at both ends of the glass tube to amplify the light (electromagnetic wave) and generate coherent light. When a semiconductor laser applies a positive bias (p type is positive, n type is negative) to a semiconductor pn junction, electrons are injected into the p type semiconductor, and holes are injected into the n type semiconductor, the electrons and holes are joined. It recombines when passing through, and uses the light generated at this time.

(Scanning method)
In this embodiment, an optical system including a light source, a light receiving element, an objective lens, a half mirror, and a pinhole is used as a method for detecting the height of the surface of a three-dimensional subject. The laser light output from the light source is condensed on the surface of the three-dimensional object by the objective lens. The condensed light is reflected on the surface of the three-dimensional object and returns along the same optical path as the forward path, and the returned laser light is bent at a right angle by the half mirror and is condensed again on the pinhole surface. .

  As shown in FIG. 2A, when the condensed light passes through the pinhole and reaches the light receiving element, it is detected that the three-dimensional object is at the focal length (focus distance). As shown in FIG. 2B, when the three-dimensional object is at a distance that is out of focus, the reflected light is not collected and cannot pass through the pinhole, so that the light receiving element cannot detect the light. From the intensity of the reflected light returning to the light receiving element, it is detected whether or not the three-dimensional object is at the focal position, and a pinhole and a light receiving element are arranged at a position equal to the focal length of the objective lens. This optical system is called a confocal optical system, and such a detection principle is called “confocal principle”, and the height information of a three-dimensional object is detected based on the confocal principle.

  As shown in FIG. 3, since the light source is a point light source, the imaging field of view is divided and scanned via an XY scan optical system, and reflected light at each point is detected by a light receiving element. An objective lens or a three-dimensional object is driven in the Z-axis direction, and the amount of reflected light for each Z-axis position at each point is acquired by repeating scanning. The height information and the reflected light amount are recorded with the Z-axis position having the highest reflected light amount as a focal point, and thereby, a light amount omnifocal image and a high-low image (height information) focused on the whole are obtained.

  That is, the laser light emitted from the laser light source passes through the X-Y scanning optical system and scans the surface of the three-dimensional object, and the reflected light amount information only at the position in focus by the confocal optical system is obtained. Detect with. By stacking the focal position information in the Z-axis direction, an “all-focus image” is created, and at the same time, the three-dimensional shape of the surface is measured by storing the objective lens position at the focal position.

  As a scanning method, for example, as shown in FIG. 4, a galvano scanner method, a photoacoustic element (AOD) method, or a Nipkow disk method can be used. The galvano scanner system of FIG. 4A has a mirror for reflecting laser light at the tip of the servo motor, and the laser is controlled in the X axis direction and Y axis direction by changing the mirror angle by controlling the servo motor. Scan. In the photoacoustic element (AOD) system of FIG. 4B, a piezoelectric element is bonded to an acoustooptic medium made of glass, and an electric signal is applied to the piezoelectric element to generate an ultrasonic wave, which passes through the acoustooptic medium. The laser light is diffracted to deflect the light. In the Nipkow disc method of FIG. 4 (c), a disk (disk) having a single row or multiple rows of pinholes in a spiral shape is rotated, and a plurality of lights passing through the pinholes scan the surface of a three-dimensional object. To do.

(Light receiving element)
As the light receiving element, as shown in FIG. 5, a photodiode, a CCD (charge coupled device), or a photomultiplier tube (PMT) can be used. The photodiode shown in FIG. 5A is composed of a PN junction made of P-type and N-type semiconductors. When light is irradiated onto the PN junction surface, an electron-hole pair is absorbed by absorption of light energy. Are generated in large quantities, electrons generated in the P-type semiconductor move to the N-type semiconductor, and conversely, holes move from the N-type to the P-type semiconductor, and a photocurrent flows from the P-type electrode to the N-type electrode accordingly. The CCD (Charge Coupled Device) in FIG. 5B has a one-dimensional and two-dimensional configuration. In the two-dimensional CCD, small photodiodes are arranged in a vertical and horizontal matrix in the imaging region, and each photodiode is a hemisphere. The light passing through the microlens is guided to each photodiode, and charges corresponding to the amount of light are accumulated by the photoelectric effect. The charges accumulated for a certain period of time are horizontal CCD and vertical CCD. Is transferred to the output unit, converted into a voltage and output. The photomultiplier tube (PMT) in FIG. 5 (c) is a device using a phenomenon in which photoelectrons are emitted from a metal when the metal is irradiated with light, and the structure is a cathode, a plurality of dynodes, and secondary electrons. These electrodes are housed in a vacuum glass tube. When light strikes the photocathode provided on the cathode, photoelectrons are emitted inside, the emitted electrons are amplified by 6 to 20 dynodes, reach the anode, and from the anode according to the intensity of light, Current is output.

  In this way, the three-dimensional object 40 is scanned by irradiating laser light from the horizontal direction, and the reflected light from the three-dimensional object 40 is captured by the light receiving element 21 to obtain the three-dimensional image information of the three-dimensional object 40. It is possible to capture and process 3D image information of a subject using laser light with a simple configuration.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a 3D image information capture processing system that captures and processes 3D image information of a subject using laser light, and captures 3D image information of a subject using laser light with a simple configuration. Is possible.

DESCRIPTION OF SYMBOLS 1 Three-dimensional image information acquisition processing system 10 Scanning means 11 Light source 12 Pinhole 13 Half mirror 14 Objective lens 20 Image information acquisition means 21 Light receiving element 22 Pinhole 30 Image information processing means 40 Three-dimensional subject 50 Image storage management center

Claims (4)

Scanning means for irradiating and scanning a laser beam toward a three-dimensional object;
Image information capturing means for capturing reflected light from the subject obtained by the scanning unit with a light receiving element;
An image storage management center for storing and managing the three-dimensional image information of the subject obtained from the image information capturing means;
Image information processing means for obtaining and processing the three-dimensional image information of the subject stored in the image storage management center;
A three-dimensional image information capture processing system comprising: The image information processing means includes
The three-dimensional image information capture processing system according to claim 1, wherein processing for changing an imaging mode is possible. The image information processing means includes
The three-dimensional image information capture processing system according to claim 1, wherein processing for changing a focal position is possible. The image information processing means includes
The three-dimensional image information capture processing system according to claim 1, wherein communication with the image storage management center is possible by a wireless LAN function.