JPH02308115A - Telescopic video monitoring device and video processing method thereof - Google Patents

Abstract

PURPOSE:To make display in such a manner that the top and bottom of a video display coincide with the top and bottom of a telescope at all times by reading video signals out of a video memory in accordance with the erecting and reverse positions of the telescope detected by an inversion detecting means and displaying the same by a display device. CONSTITUTION:The output (pulse signal) from the inversion detecting means is inputted via an inverter 25 to a T flip-flop circuit 26 (TFF) and the Q output of the TFF 26 is inputted to a memory address controller 24. The Q output inverts (L H) when the pulse signal from the inversion detecting means to TFT26 is inputted via the inverter 25. The Q output is an ''H'' in the state when the signal is not inputted from the inversion detecting means. The Q output inverts to an ''L'' when the signal is inputted from the inversion detecting means. The always erecting display is executed in this way regardless of the erecting and reverse positions of the telescope.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides an arrangement in which an image sensor that converts an optical image into an electrical signal is disposed in the eyepiece part of a telescope that is supported so as to be swingable and reversible. A display means is connected, and the optical image taken by the telescope is monitored as a video by the display means. The present invention relates to a telescope image monitoring device and its image processing method.

[Prior Art] Recently, in surveying instruments (seven odolites), etc., in which the telescope can be rotated horizontally about a vertical axis and is held so as to be swingable up and down about the horizontal axis, the eyepiece part of the telescope is An image pickup device such as an image pickup tube or a CCD sensor is arranged in the telescope, and the optical image taken by the telescope is converted into an electrical signal by the image pickup device, and based on the electric signal, the image is displayed on a display device such as a CRT for monitoring. There is something configured.

A telescope that monitors an image using a display device as described above is usually configured so that the image displayed by the display device is displayed as an erect image. In other words, during normal use, the top and bottom of the telescope and the top and bottom of the displayed image match (this state where the top and bottom of the telescope and display device match is referred to as the normal position), and the output data from the image sensor is displayed. By displaying it as is on the device, it will be displayed as erect.

[Problems to be Solved by the Invention] By the way, the above-mentioned telescope can be swung up and down about a horizontal axis, and depending on the purpose of use, the telescope may be used by first pointing vertically upward or downward, then inverting it (this can be changed from normal to normal position). There are cases where it is called anti-hypothesis. In this case, the telescope is upside down (inverted), so in the conventional configuration described above, the display on the display device is inverted. In other words, the display on the display device is configured so that it is displayed as upright when the telescope is in the normal position, so when the telescope is in the inverted position, the display on the display device also becomes upside down and inverted. This is what happens.

As a result, the top and bottom of the displayed image differ when the telescope is in the normal position or in the reversed position, and when the telescope is in the reverse position, the display is inverted, which gives a sense of discomfort to the operator and makes it difficult to set standards, making it difficult to operate. was extremely bad.

[Object of the Invention] In view of the above-mentioned circumstances, the present invention provides that even when the telescope is inverted, it can be displayed as upright on the display device.
To provide a telescope image monitoring device and its image processing method, which can display normal text on a display device regardless of whether the telescope is in normal or reversed position.

With the goal.

[Means for Solving the Problems] For this reason, the telescope image monitoring device and its image processing method according to the present invention provide a telescope with a reversal detection means for detecting reversal of the telescope, and also provide a reversal detection means for detecting reversal of the telescope, and also detect an image signal from an image sensor. It is equipped with an A/D converter that converts into a digital signal, a randomly accessible video memory, and a D/A converter that converts the video signal read from the video memory into an analog signal, and the video signal from the image sensor is is converted into a digital signal by an A/D converter, the video signal is written into the video memory, and read out based on the signal from the inversion detection section, and the read video signal is converted into an analog signal and displayed on the display means. It is configured to include a video processing means for outputting.

Then, the video processing section converts the electric signal from the image sensor into a digital signal using the AD converter, writes the digital signal into the video memory, and also converts the electric signal from the image sensor into a digital signal based on the normal or reverse position of the telescope detected by the reversal detection means. By reading the video signal from the video memory and displaying it on the display device so that the top and bottom of the image displayed by the display means always match the top and bottom of the telescope, the top and bottom of the image displayed by the display device are always aligned with the top and bottom of the telescope. It is displayed in a manner consistent with the following.

[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a control block diagram of an embodiment of a telescope image monitoring device according to the present invention, and FIG. 2 is a perspective view showing a schematic configuration of a surveying instrument to which the same is applied.

In the illustrated Jllll balancer, a reference telephoto @io is supported between columns 12 and 12 which are arranged opposite each other so as to be able to swing up and down with rotating shafts 10A and IOA which are horizontally fixed to the lens barrel.

The support column 12.12 is mounted on a base (not shown) so as to be rotatable around a vertical axis, and its rotation center line B, the rotation axis 10A, the rotation center line H of the IOA, and the optical axis C of the reference telescope 10 are designed to intersect at one point.

An image sensor 11 is attached to the eyepiece of the reference telescope 10, and the image sensor 11 sequentially converts the optical image taken by the reference telescope 10 into electrical signals and outputs them.

Inside one of the pillars 12, a reversal detection means 30 is constituted by an operating member 31 and a microswitch 32.

That is, the rotating shaft 10A penetrating into one of the pillars 12 has a
An operating member 31 having operating protrusions 31A, 31A formed at symmetrical positions is mounted, and a position is provided in the corresponding column 12 at which the lever 32A can be operated by the operating protrusions 31A, 31A of the operating member 31. A microswitch 32 is disposed at , and when the reference telescope 1O faces in the vertical direction, the operation member 31 activates its operation protrusions 31A, 31.
A is set in a positional relationship in which the lever 32A of the microswitch 32 is pressed.

The microswitch 32 is connected to a video signal processing unit 20, which will be described later, and outputs a pulse signal to the video signal processing unit 20 when a lever 32A is pressed.

The video signal (video data) from the image sensor 11 is an A/D
Converter 21. Randomly accessible video memory 22.
D/A converter 23 and memory address controller 24
The signal passes through a video signal processing section 20 configured as shown in FIG.

In the video signal processing section 20, the video data converted into a digital signal by the A/D converter 21 is sequentially written into the video memory 22 in a predetermined order and read out in a predetermined order under the control of the memory address controller 24.
This is to output toward the display 41.

The video memory 22 is as shown in FIG. 3(B).

One memory cell corresponds to one pixel data on the screen,
Memory capacity 1 (iXj
part-time job).

The memory address controller 24 writes the video data converted into digital signals by the A/D converter 21 into the video memory 22 in a predetermined order, and sequentially reads the video data in a predetermined order based on the input from the above-mentioned inversion detection means 30. This is how it is controlled.

Here, the output (pulse signal) from the 1 inversion detection means 30 is passed through the inverter 25 to the T flip-flop circuit 26.
(hereinafter abbreviated as TFF) 1, and the Q output of dTFF 26 is input to the memory address controller 24.

When the TFF 26 receives a pulse signal from the 1 inversion detection means 30 via the inverter 25, the Q output becomes inverted (L←
H) In this embodiment,
When no signal is input from the inversion detection means 30, the Q output is rHJ, and when a signal is input from the inversion detection means 30, the Q output is inverted and becomes J. still,
When the signal is input again from the inversion detection means 30, the Q output is inverted again and becomes rHJ.

In other words, when the reference telescope 10 is in the normal position, the Q output of the TFF 26 is rHj, and when the reference telescope 10 moves from this state to the vertically upward or downward state and then to the reverse position, when facing this vertical state, the micro The switch 32 lever 32A is the operating protrusion 31 of the operating member 31
A is suppressed and a pulse signal is output, and this signal is suppressed by T.
Input to FF26 and Q output from TFF26 is rLJ
becomes.

That is, the Q output from the TFF 26 corresponds to the normal position or the reverse position of the reference telescope 10, and the Q output when the reference telescope 10 is in the normal position.
The output is "H" and the Q output is rLl when the reference telescope 10 is in the normal position.

The surveying instrument configured as described above operates as follows.

In the video signal processing section 20, the video data converted into a digital signal by the A/D converter 21 is sequentially written into the video memory 22 in a predetermined order and read out in a predetermined order under the control of the memory address controller 24.
Output to the display 41.

The writing and reading of video data into and from the video memory 22 is controlled by the memory address controller 24 as shown in the flowchart shown in FIG.

That is, when writing, the memory cell position is set to (X, Y
) (Actually, it specifies the memory address corresponding to the position (X, Y) of the memory cell. Each row corresponds to a horizontal scanning line.

(1,1), (2,1), (3,1)...
(i, 1) (1, 2), (2, 2), (3, 2)・
...(i, 2) (1, j), (2, j), (
3, D・・・・・・Carry out in the order of (i, j),
(FIGS. 3(A) to 3(C) show correspondence diagrams between video data and memory cells.) When writing for one screen is completed, the memory address controller 24 controls the video memory 22 based on the input from the TFF 26. Read video data from
The signal is output toward the CRT display 41.

At this time, if the Q output from TFF26 is rHl, reading is the same as writing, that is, (1, 1), (2,
1), (3,1)...(i,1)(1,2)
, (2,2), (3,2)...(i,2)
纂(1,j), (2,j), (3,4)・・・・・・
(i, j), and when the Q output from TFF2B is rLJ, the order is reversed from that of the old case, that is, (i,
D...(3,j), (2,j), (1,j
)(i,2)...(3,2), (2,2),
(1,2)(+,1)...(3,1), (
Reading is performed in the order of 2, 1) and (1, 1).

The CRT display 41 scans according to the order of output from the video signal processing unit 20 to form a screen (image), and as a result, when the reference telescope 10 is in the normal position, an erect image is displayed on the display screen. With this setting, when the reference telescope 10 is reversed, the display on the display screen will be reversed accordingly, and therefore, regardless of whether the reference telescope 10 is in the normal position or reversed position, the display screen will always show the following information. An erect image is displayed.

In addition, when the reference telescope lO swings (it can swing to either side) and returns to the normal position again, the display on the display screen will be reversed again when facing vertically and return to its original state. It is.

[Effects of the Invention] By inverting the display by the telescope image monitor device and its display means according to the present invention, it is possible to always display the telescope in an upright position regardless of whether the telescope is in the normal position or inverted position. Therefore,
In particular, the reference operation when reversing the telescope becomes easier, and the operability is greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a control block diagram of an embodiment of a telescope image monitoring device according to the present invention, Fig. 2 is a perspective view showing the schematic configuration of a surveying instrument to which the same is applied, and Fig. 3 is a correspondence between image data and memory cells. 4, in which (A) is an image capturing screen, (B) is a memory cell array, (C) is a diagram showing the contents stored in the video memory, and FIG. 4 is a control flowchart of the video processing means. lO...Reference telescope (telescope), 11...Imaging device 20...Video signal processing section (video signal processing means) 30.
... Reversal detection means 40 ... Display means 41 ... CRT display (display means) Patent applicant Asahi Optical Co., Ltd. Figure 1 Figure 3 (A) (B) × (C) (A) ”( B)

Claims (2)

[Claims] (1) An image sensor that converts an optical image into an electrical signal is arranged in the eyepiece of a telescope that is supported in a swingable and reversible manner, and the image sensor is connected to a display means, and the display means displays an optical image of the telescope. is monitored as an image, the telescope is provided with a reversal detection means for detecting reversal of the telescope, and an A/D converter that converts the video signal from the image sensor into a digital signal and is randomly accessible. a video memory, and a D/A converter that converts the video signal read from the video memory into an analog signal, and the video signal from the image sensor is converted into a digital signal by the A/D converter, writing the video signal into the video memory and reading it based on the signal from the inversion detection section;
comprising a video processing means for converting the read video signal into an analog signal and outputting it to the display means;
A telescope image monitoring device featuring: (2) The A/D converter converts the electric signal from the image sensor into a digital signal, and the digital signal is written to the video memory, and the telescope is detected by the reversal detection unit as being in the normal or reverse position. Based on the above, a video signal is read from the video memory and outputted 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. (1) An image processing method in the telescope image monitoring device described above.