JPH11325883A - Surveying apparatus with image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surveying apparatus with an image pickup device, capable of recording and displaying a picture collimated by a telescope, without obstructing the portable property of the surveying apparatus. SOLUTION: The surveying apparatus with an image pickup device comprises means for measuring the distance, means 19 for measuring the angle, means 7 for photographing measuring points, converting means 48 for digitizing the photographed picture signals, picture compressing means 49 for compressing the data from the converting means, means 50 for recording the compressed picture data, and means for displaying the picture data, etc., whereby a picture collimated by a telescope can be recorded and displayed on recording means of the surveying apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveying instrument, and more particularly, to an imaging device provided in a goniometer (transit), a distance measuring goniometer (total station), etc., so that an image can be recorded. The present invention relates to a surveying instrument provided with a display monitor on a main body of a distance measuring and angle measuring instrument or the like so that imaging information can be displayed.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 61-108911 and Japanese Patent Application Laid-Open
-272970, Japanese Patent Publication No. 5-24487,
A technique disclosed in Japanese Patent Application Laid-Open No. 7-159158 is known.

[0003] Japanese Patent Application Laid-Open No. 61-108911 relates to a surveying instrument having a video display. In this technique, as shown in FIG. 8, there is a telescope unit having an objective lens 81 and a movable focusing lens 82, and a MOS solid-state imaging device 83 is arranged on an image forming surface of the telescope unit.
The S solid-state imaging device 83 is connected to a video signal processing circuit 84 shown as a block, and the video signal processing circuit 84 is connected to a video display 85 or an external output device 86 using an LCD. Thereby, the image can be output to a display or a monitor television of the surveying instrument main body, and the image of the target is always displayed fixed.

Japanese Patent Laid-Open No. 5-272970 relates to an automatic level. This technique is as follows.
When the staff set up at the measuring point is collimated with a telescope, a scale line on the staff and an optical image of a numerical value corresponding to the scale line are formed at the focal position. The formed scale line and the scale line corresponding numerical display image are stored in the image memory as pixel data. Then, of the pixel data stored in the image memory, the pixel data related to the scale line corresponding numerical display and the pixel pattern data of the pattern memory are compared, and the scale line corresponding numerical value is identified.

In this technique, the number of pixels between two graduation lines near the center of the field of view of the telescope, the length between the graduation lines, the pixel size, and a straight line parallel to the graduation line and passing through the center of the visual field are close to the center of the field of view. A numerical value smaller (finer) than the numerical value corresponding to the scale line, for example, a numerical value below the decimal point is calculated from the number of pixels with one of the scale lines. Then, the identification result of the scale line corresponding numerical value and the calculated value of the numerical value smaller (fine) than the scale line corresponding numerical value are automatically stored as measured values. Further, the measured values are displayed on the data display unit. Further, since the measurement data is stored in the storage means, the measurement result can be processed based on the stored measurement data by using an external data processor.

Japanese Patent Publication No. H5-24487 discloses a telescope video monitor. This technology has a reversal detecting means for detecting reversal of a telescope, a video memory for storing a video signal from an image sensor, and writes a video signal from the image sensor to the video memory, and detects the video signal from the reversal detector. A video signal which is read from a video memory and output to the display means so that the top and bottom of the video displayed by the display means always match the top and bottom of the telescope based on the normal or inverted position of the telescope. Processing means,
The image of the telescope is output to a CRT display.

Japanese Patent Application Laid-Open No. 7-159158 is a surveying method using a display screen. A telescope provided on the front of the main unit, a video camera detachably mounted on the eyepiece of the telescope, a display screen connected to the video camera, and a sight for roughly aiming at a target point Aiming at the target point roughly with the sight, setting the direction of the device body, then taking an image obtained by looking through the telescope, projecting the image on the display screen, This is a technique for performing fine adjustment so that the intersection of the crosshairs on the display screen comes to a target point while watching the screen.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the technique of outputting a video to a monitor television described in JP-A-8911, since no recording means is provided for a recording device, image data and distance / angle information cannot be recorded, and image data cannot be recorded. There is a disadvantage that it is difficult to use it effectively.

In the technique described in Japanese Patent Application Laid-Open No. 5-272970, in which a scale line on a staff and an optical image of a numerical display corresponding to the scale line are stored in an image memory as pixel data and displayed, pixel data and pixel data Since the measurement data of the graduation line calculated by using is stored in different recording media, it is necessary to prepare different reading devices, and it becomes difficult to match the image data with the measurement data. Therefore, there is a problem that data analysis becomes complicated.

[0010] Further, in the technique of outputting an image of a telescope to a CRT display described in Japanese Patent Publication No. Hei 5-24487, a monitor device is separately required as an image output device, so that portability to a survey site or the like is required. Disadvantageous in that.

Further, in the technique of displaying an image of a telescope on a display screen described in Japanese Patent Application Laid-Open No. Hei 7-159158, there is no means for recording image data. Can not. Further, since a monitor device is separately required as an output device for imaging, it is disadvantageous in terms of portability to a survey site or the like.

An object of the present invention is to record image data on a removable recording medium in a surveying instrument, and to output the recorded data without using an external video recording device such as a monitor device. Accordingly, an object of the present invention is to record and display an image collimated by a telescope without impairing the portability of the surveying instrument.

Another object of the present invention is to record distance measurement data, angle measurement data, collimation line data, etc. together with image data on the same recording medium, and collectively collimate the image and its measured values. To display.

[0014]

According to the present invention, there is provided a method for measuring a distance, a method for measuring an angle,
Means for imaging the measurement points, conversion means for digitizing the imaged image signal, image compression means for compressing data from the conversion means, means for recording compressed image data, image data, etc. This is solved by providing a configuration including means for displaying. Thus, the image collimated by the telescope can be recorded and displayed on the recording means of the surveying instrument main body.

At this time, in the surveying instrument with an imaging device according to the present invention, a screen imaged on the imaging surface of the telescope is imaged by the built-in CCD camera, and this image data is easily attached to and detached from the surveying instrument body. It is preferable to record the data on a simple recording medium. This makes it possible to take out the image data recorded by the surveying instrument main body from the surveying instrument and store it, or analyze the data recorded on the recording medium using a personal computer or the like.

Further, a surveying instrument with an imaging device according to the present invention
It is preferable that the recording medium is configured to record at least one or both of the distance measurement data and the angle measurement data together with the image data or as a part of the image data. Thereby, since at least one or both of the image data, the distance measurement data, and the angle measurement data are recorded on the same recording medium,
Each data can be handled by one recording medium.

It is preferable that the surveying instrument with an imaging device according to the present invention is configured such that the collimation line data is recorded together with or as a part of the image data on the recording medium. Thereby, since the image data and the collimation line data are recorded on the same recording medium, each data can be handled by one recording medium. In addition, improvement of work efficiency and time reduction can be expected.

The surveying instrument with an imaging device according to the present invention is configured to display the image data, at least one or both of the distance measuring data and the angle measuring data, and the collimation line data on a display monitor of the surveying instrument main body. This is preferable. Thus, the image collimated by the telescope can be displayed on the surveying instrument main body, and the survey result can be easily checked at the survey site without losing the portability of the surveying instrument.

The surveying instrument with an imaging device according to the present invention is preferably configured to record the above as characters so that they can be displayed on a screen. This makes it possible to display at least one of or both of the distance measurement data and the angle measurement data together with the collimated image.

The surveying instrument with an imaging device according to the present invention is preferably configured such that at least one or both of the distance measuring data and the angle measuring data are displayed as characters on a display monitor of the surveying instrument main body. Thereby, the character information of the data can be displayed together with the image collimated by the telescope in the surveying instrument main body.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A surveying instrument with an imaging device according to the present invention
Means for measuring the distance, means for measuring the angle, means for imaging the measurement points, conversion means for digitizing the image signal captured, and image compression means for compressing data from the conversion means, The configuration includes a unit for recording compressed image data and a unit for displaying image data and the like.

Then, the distance and the angle can be measured by a surveying instrument equipped with an imaging device. In addition, with a surveying instrument with an imaging device,
When the measurement point is collimated, an optical image of the measurement point is captured by means for capturing the measurement point. The image captured by the imaging means is electrically converted as an image signal.

Since the electrically converted image signal is an analog signal, it is converted by a converting means for digitizing. By digitizing, it is possible to digitize and process the image signal.

Since there are too many digital signals as information in this state, the converted data is compressed by the image compression means. As a result, the image data can be recorded in the recording unit described below without a huge amount of image data.

The compressed image data is recorded as image information by using recording means. This image data is displayed on the display means.

As means for imaging the measurement points, a built-in CC
This can be done with a D camera. As a means for recording the compressed image data, a recording medium that can be easily attached to and detached from the surveying instrument body can be used.

The recording medium can record at least one or both of distance measurement data and angle measurement data and collimation line data together with the image data or as a part of the image data. The distance measurement data and the angle measurement data are data measured by a surveying instrument with an imaging device. As a result, image data, measurement data, and collimation line data can be stored simultaneously or mixed in one recording medium.

The image data, at least one or both of the distance measurement data and the angle measurement data, and the collimation line data can be displayed on a display monitor of the surveying instrument main body. Thereby, it is possible to confirm the measurement data and the collimation line data together with the image data at the survey site.

Further, at least one or both of the distance measurement data and the angle measurement data can be recorded so as to be displayed on a screen as characters, and at least one or both of the distance measurement data and the angle measurement data are represented as characters. It is also possible to display on the display monitor of the surveying instrument body. This makes it possible to display the measurement data as characters together with the image data.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. Note that the following examples do not limit the contents of the present invention.

FIGS. 1 and 2 are conceptual diagrams showing the construction of an optical system of an embodiment of a surveying instrument with an imaging device according to the present invention. FIG. 3 is a diagram showing a state in which a display monitor is attached to the surveying instrument with an imaging device. 4 to 7 are block diagrams showing image processing steps of a surveying instrument with an imaging device.

First, the configuration of the optical system of the surveying instrument with an imaging device according to this embodiment will be described. The surveying instrument equipped with an image pickup device shown in FIG. 1 is a distance measuring and angle measuring instrument (total station) 31. The optical system of this example includes an objective lens 11, a distance measuring optical system 18, a focusing lens 12, a holographic prism 13, a beam It comprises a splitter 16, a CCD camera 17, a focusing mirror 14, and an eyepiece 15. As the configuration of the optical system of the distance measuring angle measuring instrument (total station) 31, a known one can be used.

As shown in FIG. 1, an image incident from an objective lens 11 passes through a focusing lens 12 and a holographic prism 13 and reaches a focusing mirror 14 and an eyepiece 15. An image reaches an eyepiece 15 by a beam splitter 16 provided between a holo prism 13 and a focusing mirror 14,
It is separated into an image that reaches the D camera 17. Objective lens 1
The configuration from 1 to the eyepiece 15 can use the configuration of a known goniometer. In the case of the configuration shown in FIG. 1, it is separated into an electronic circuit system and an optical collimation system.

The measurer adjusts the focusing lens 12 while looking through the eyepiece 15 to form an image on the focusing mirror 14.
At this time, the formed image is separated by the beam splitter 16 and decomposed into pixels by the CCD camera 17. In the configuration shown in FIG. 1, only the image data can be captured by the CCD camera 17.

The rangefinder optical system 18 is provided between the objective lens 11 and the focusing lens 12. In this embodiment,
Although an example of an optical rangefinder is shown, a radio rangefinder may be used.
The configuration of a range finder that measures the distance by another method may be used.

The optical system 18 for a distance meter can be configured to include a dichroic mirror, a chopper, a variable light amount plate, and the like, and a known configuration can be used. In this embodiment, the collimating optical system and the ranging optical system have the same axis. However, the collimating optical system and the ranging optical system may be provided separately.

The optical system of the surveying instrument with an imaging device shown in FIG. 2 includes an objective lens 11, an optical system 18 for a distance meter, a focusing lens 12,
Holo prism 13, focusing mirror 14, eyepiece 15, CC
It comprises a D camera 17. Also in this case, a known optical system can be used.

As shown in FIG. 2, the image incident from the objective lens 11 passes through the focusing lens 12, the holographic prism 13, and reaches the focusing mirror 14, the eyepiece 15, and the CCD camera 17. The rangefinder optical system 18 is provided between the objective lens 11 and the focusing lens 12.

In FIG. 2, the beam splitter 16 is not provided as shown in FIG.
5 is provided before. In this case, a collimating monitor for collimating by the measurer is required. The measurer adjusts the focusing lens 12 while looking at a collimation monitor (not shown), forms an image on the focusing mirror 14, and
Take in.

In the method shown in FIG. 2, image data and collimation line data can be acquired. By capturing the collimation line data together with the image data, it becomes possible to record and display the collimation line data by a technique described later. This can improve work efficiency and reduce time.

The CCD camera 17 has a CCD element.
The image is divided into pixel units by the CD element and is converted into an electric signal. The installation position of the CCD camera 17 may be either of the positions shown in FIGS. 1 and 2, and any other position as long as an image at the time of surveying can be captured.

In the case of the configuration of the optical system shown in FIG. 2, a display monitor 32 is required. FIG. 3 shows an example in which a display monitor 32 is attached to a distance measuring and angle measuring instrument (total station) 31 which is an example of a surveying instrument with an imaging device according to the present invention. The position of the display monitor 32 is not limited to the position shown in FIG. 3, and may be installed at a position that is easy to handle when working on the distance measuring and angle measuring angle 31.

The display monitor 32 is not only necessary for the configuration of the optical system shown in FIG. 2, but also makes it possible to display various data, which will be described later, on a surveying instrument with an imaging device. Note that the captured image data in the case described below may or may not include collimation line data.

The image data captured in FIG. 1 or FIG.
The image is processed and recorded according to the image processing steps shown in FIGS. Hereinafter, the image processing step will be described.

First, the image processing step of FIG. 4 will be described. 4 includes a CCD camera 17, an analog / digital (A / D) converter 48, an image compression device 49, and a recording medium 50.

The image data picked up by the CCD camera 17 is converted into digital data by an A / D converter 48. The digital data is compressed by an image compression circuit 49. The compressed data is recorded on the recording medium 50. The recorded image data can be displayed on the display monitor 32 described above.

The CCD camera 17 is as described above, and a known camera can be used. By taking an image with the CCD camera 17, the survey image can be divided and taken in pixel units. This facilitates data processing after imaging.

Since the image data is analog data,
The A / D converter 48 quantizes the analog data and converts it into digital data. A / D converter 48
A conventionally known one can be used.

When the image data is processed by the A / D converter 48, the processed digital data usually has a large capacity.
Since the recording process and the analyzing process may be hindered as it is, the data is compressed using the image compression circuit 49.

The image compression process is a method for faithfully expressing image information with a minimum amount of information. For example, in a portion of the image data having the same image information, for example, when all the pixels in one pixel are completely black, and 0 when they are completely white, they are unwrapped and the address of the pixel is added. Extra data can be reduced.

As a method of image compression processing, a conventionally used method can be used. For example, a Hadamard transform method, a prediction loading method, a differential pulse code modulation (DPCM) method, a run-length encoding method, a Huffman encoding method, and the like can be given.

The compressed data is recorded on the recording medium 50. As the recording medium 50, a writable and readable medium can be used. In this case, the recording medium 50 such as a semiconductor memory card, a floppy disk, a magneto-optical disk (MO), etc., which can reliably record image data and can be easily attached to and detached from a surveying instrument equipped with an imaging device Any of them can be preferably used.

Next, the image processing process will be described with reference to FIGS.
Each example will be described. First, the image processing step of FIG. 5 will be described. 5 includes the CCD camera 17, the angle data / distance data 51, the superimpose circuit 52, the A / D converter 48, and the image compression device 4.
9, the recording medium 50.

When the angle and the distance are measured by the surveying instrument with the imaging device, the angle data and the distance data 51 are accumulated in the surveying instrument with the imaging device. The angle data / distance data 51 is converted into digital data by an A / D converter 48 together with image data captured by the CCD camera 17 using a superimpose circuit 52.

The digital data is compressed by an image compression circuit 49. The compressed data is stored in a recording medium 50.
To record. In this way, image data and angle data
The distance data 51 and the distance data 51 can be recorded on the recording medium 50 in a mixed manner.

The image data and the angle data / distance data 51 recorded on the recording medium 50 are stored in the display monitor 32.
Can be displayed. This makes it easy to confirm data at the survey site.

Next, the image processing step of FIG. 6 will be described. The image processing step of FIG.
It comprises a converter 48, an image compression device 49, a recording medium 50, and angle data / distance data 51.

The image data picked up by the CCD camera 17 is converted into digital data by an A / D converter 48 and is compressed by an image compression circuit 49. The angle data / distance data 51 is stored in another A / D converter 48.
Is converted into digital data.

The compressed image data is added with the compressed angle data and distance data, and recorded on the recording medium 50. Thus, the angle data / distance data 51 can be recorded on a part of the recording medium.

The recorded image data can be displayed on the display monitor 32 described above. Further, the measured angle data / distance data 51 can also be displayed on the display monitor 32 as character information.

Next, the image processing step of FIG. 7 will be described. The image processing process shown in FIG.
It comprises a converter 48, an image compression device 49, a recording medium 50, and angle data / distance data 51.

The image data picked up by the CCD camera 17 is converted into digital data by an A / D converter 48. The angle data / distance data 51 is converted into digital data by another A / D converter 48.

Image data converted to digital data, angle data / distance data converted to digital data 5
1 is added, and compression processing is performed by the image compression circuit 49. The compressed data is recorded on the recording medium 50. Even in such a method, the angle data / distance data 51 can be recorded on a part of the recording medium.

The recorded image data can be displayed on the display monitor 32 described above. Further, the measured angle data / distance data 51 can also be displayed on the display monitor 32 as character information.

As shown in FIGS. 6 and 7, the angle data
The distance data 51 can be added to the image data after or before the image compression circuit 49.

Further, the image processing shown in FIGS. 4 to 7 can be performed after adding additional information to the angle data / distance data 51. The additional information includes information such as survey date and time and weather.

The additional information is a surveying instrument with an imaging device, for example, FIG.
Can be input using the ten keys 33 of the distance measuring and angle measuring (total station) 31 shown in FIG. The input additional data can be recorded on the recording medium 50 together with the angle data / distance data 51 together with the image data or as a part of the image data.

By recording the additional information on the recording medium 50 together with or as a part of the image data,
Additional information can be stored on the recording medium 50 as a survey record and displayed on the above-described display monitor 32 or an external display device.

The image data and angle data / distance data recorded as shown in FIGS. 4 to 7 can be analyzed using a personal computer or the like. At this time, if a plurality of image data obtained by collimating the target from a plurality of different locations are used, many points can be measured as in the case of photogrammetry.

Further, it is possible to shorten the measurement time of measurement having a large amount of measurement data such as the amount of soil.

[0071]

According to the present invention, a means for measuring a distance, a means for measuring an angle, a means for imaging a measurement point, a conversion means for digitizing a captured image signal, and a conversion means Image compression means for compressing data from
Since it is a surveying instrument with an imaging device, characterized in that it is configured to include a means for recording compressed image data and a means for displaying image data and the like, collimated image data at the time of surveying is recorded and displayed can do.

Also, a screen imaged on the image plane of the telescope is picked up by a built-in CCD camera, and the image data is recorded on a recording medium which can be easily attached to and detached from a surveying instrument equipped with an image pickup device. Since it is a surveying instrument with an imaging device,
Since there is no cable connected to the outside, the portability is excellent, and image data recorded on a recording medium can be analyzed using a personal computer or the like.

In the recording medium, distance measurement data, angle measurement data, and collimation line data are recorded together with the image data or as a part of the image data. Data analysis or the like can be performed by using the information of.

Further, the image data, at least one or both of the distance measurement data and the angle measurement data, and the collimation line data can be displayed on the display monitor of the surveying instrument equipped with the imaging device. And the measurement data can be displayed without losing the portability of the surveying instrument.

Further, at least one or both of the distance measurement data and the angle measurement data can be recorded as characters so that they can be displayed on a display monitor of a surveying instrument with an image pickup device.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of an optical system of a surveying instrument with an imaging device according to the present invention.

FIG. 2 is another conceptual diagram showing the configuration of the optical system of the surveying instrument with an imaging device according to the present invention.

FIG. 3 is a front view showing a state where a display monitor is attached to the surveying instrument with an imaging device according to the present invention.

FIG. 4 is a first block diagram illustrating an image processing step of the surveying instrument with an imaging device according to the present invention.

FIG. 5 is a second block diagram illustrating an image processing step of the surveying instrument with an imaging device according to the present invention.

FIG. 6 is a third block diagram illustrating an image processing step of the surveying instrument with an imaging device according to the present invention.

FIG. 7 is a fourth block diagram illustrating an image processing step of the surveying instrument with an imaging device according to the present invention.

FIG. 8 is a conceptual diagram showing an example of a surveying instrument having a conventional video display.

[Explanation of symbols]

 11, 81 Objective lens 12, 82 Focusing lens 13 Holographic prism 14 Focusing mirror 15 Eyepiece 16 Beam splitter 17 CCD camera 18 Distance meter optical system 19 Distance measuring and angle measuring means 31 Distance measuring angle measuring instrument (total station) 32 Display monitor 33 Numeric Keypad 48 Analog / Digital (A / D) Converter 49 Image Compression Device 50 Recording Medium 51 Angle Data / Distance Data 52 Superimpose Circuit 83 MOS Solid-State Image Sensor 84 Video Signal Processing Circuit 85 Video Display 86 External Output Device

Claims (7)

[Claims] 1. A means for measuring a distance, a means for measuring an angle, a means for imaging a measurement point, a conversion means for digitizing a captured image signal, and compressing data from the conversion means. A surveying instrument with an image pickup device, comprising: an image compression unit; a unit for recording compressed image data; and a unit for displaying image data and the like. 2. A built-in screen for forming an image on an image plane of a telescope.
2. The surveying instrument with an image pickup device according to claim 1, wherein the image data is picked up by a CD camera and the image data is recorded on a recording medium which can be easily attached to and detached from the surveying instrument body. 3. The imaging apparatus according to claim 1, wherein at least one or both of the distance measurement data and the angle measurement data are recorded on the recording medium together with the image data or as a part of the image data. Surveying instrument. 4. The surveying instrument with an image pickup device according to claim 1, wherein the collimation line data is recorded together with or as a part of the image data on the recording medium. 5. The surveying apparatus according to claim 1, wherein the image data, at least one or both of the distance measurement data and the angle measurement data, and the collimation line data are displayed on a display monitor of the surveying instrument body. Or a surveying instrument with an imager. 6. The surveying instrument with an imaging device according to claim 1, wherein at least one or both of the distance measuring data and the angle measuring data are recorded so as to be displayed on a screen as characters. 7. The imaging device according to claim 1, wherein at least one or both of the distance measurement data and the angle measurement data are displayed as characters on a display monitor of the surveying instrument body. Surveying machine.