JPS61156381A - Automatic adjusting device in measuring area - Google Patents

Abstract

PURPOSE:To optionally set a position of a window by counting a timing signal by an input of an operating signal from an operating signal generating circuit, and transmitting a window position signal to a measuring counter by comparing with a first and a second setting values. CONSTITUTION:A binary image signal is inputted, with respect to this image signal, an operating signal generating circuit 21 generates an operating signal in a predetermined timing. A counter 22 counts a timing signal and transmits a count value thereof to a window position generating circuit 23. The window position generating circuit 23 compares a count signal from the counter 22 with a first setting value and a second setting value and feeds a pulse corresponding to a window position to a measuring counter 7 as a window position signal. The measuring counter 7 measures and processes the image signal only in a section in which the window position signal is given.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an automatic adjustment device for a measurement area in an image processing system that uses a camera lens or a camera tube as a sensor.

[Conventional technology]

Conventionally, in this type of image processing system, an arbitrary number of measurement regions (hereinafter referred to as "windows") are set in the entire field of view, and measurements, processing, judgments, etc. are performed based on the video signals within the windows. There is something that does the calculation. Alternatively, there is also a method in which the entire field of view is divided into sections and image processing is performed on each section as independent sensors.

The ninth factor is an explanation of the light receiving part of such a system. 01) in the figure is a sensor circuit made up of COD etc. and a video signal generation circuit that converts the signal of this sensor circuit into a video signal and outputs it. A line image sensor consisting of a
The ring is the field of view, and (goods) is the window position. The next field of view is as shown in FIG. 10 based on the output of the light receiving section and the line image sensor eη constructed in this manner. ′：
), there is an object (9) within the field of view indicated by the symbol (bb).
2'γ is settled, and a window frame corresponding to the window position is formed. Line image sensor and subject (
92'), the hole (92'a) of the subject to be processed is located within the window.
, and the desired calculation processing is possible.

[Problems to be Solved by the Invention] When image processing a video signal of an object using a preset method, the window position within the field of view is constant. When K moves in the 'direction), the relative position between the window position a- and the □ subject (92') is completely shifted, as shown in FIG.

In such a case, the video information from the window position does not include the hole (72'a) that is the object to be measured.

In order to prevent such problems, conventionally the subject was forcibly moved so that it did not meander9, and the window position was widened.

[Means for solving problems]

In order to solve the above problems, the measurement area automatic adjustment device (first invention) according to the present invention receives a binary video signal and operates at a predetermined timing with respect to the video signal. an actuation signal generation circuit that sends out a signal; a counter that counts the timing signal of the video signal according to the input of the actuation signal from the actuation signal generation circuit; an output of the counter; and a first timing signal for the actuation signal. and a window position generation circuit which receives the input pulses of the first timing signal and the second timing signal, and sends a pulse that rises with the first timing signal and falls with the second timing signal as a window position signal to the measurement counter; ing.

Furthermore, another measurement area automatic adjustment device (second
invention) includes an actuation signal generation circuit which receives the binarized t'L & video signal and sends out an actuation signal at a predetermined timing with respect to the skeleton image signal; L for the input of the actuation signal from the actuation signal generation circuit.
a gate circuit that opens the gate; a counter that counts the timing signal of the video signal from the gate circuit; an output of the counter, and a first timing signal and a second timing signal for the actuation signal are input; and a window position generation circuit that sends a pulse that rises at a timing signal of 1 and falls at a second timing signal as a window position signal to a measurement counter.

[For production]

In the device according to the present invention (first invention), a counter (
A) is provided with the actuation signal from the actuation signal generation circuit, counts the timing signal, and sends the count value to the window position setting circuit. The window position generation circuit compares the count signal from the counter (2) with the first set value and the second set value, and sends a pulse corresponding to the window position to the measurement counter as a window position signal. In this case, the measurement counter measures and processes the video signal only in the section where the window position signal is given.

Further, in another device (second invention) according to the present invention, the gate circuit is opened by an actuation signal from the actuation signal generation circuit, and the rainbow counter counts the timing signal of the video signal and operates the window position generation circuit. The following operation of sending out is similar to that of the above-mentioned device.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of a measurement area eye movement adjusting device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a part of a drawing image processing system incorporating the device, and FIG. Block 1 of the window position adjustment circuit of the first prisoner, and FIGS. 4 to 6 are time charts showing the operation of each part of the device.

First, an overview of the painter processing system will be explained.

In FIG. 2, (1) and (2) are line image sensors, and (3) is an input circuit to which the output of the line image sensors is input. (4) is a control circuit that controls the operation of the line image sensors (1) and (2) and selectively inputs the outputs of the line image sensors (1) and (2) to the input circuit (
3) Input ζ. (5) is a threshold level generation circuit (46), which is a comparator, and a video signal threshold level generation circuit (5) from the input circuit (3).
) and generates a binary signal of the video signal. (7) is a measurement counter that performs a predetermined measurement based on the binary signal from the core parator (6). Let's do it. (8) is window position g411I! The circuit sends a window position signal to the measurement counter (7) and operates the measurement counter (7) only while the signal is present. (to) CPU, system ROM, and RAM.

(10a) is a data bus, (10b) is an address bus,
(2) is a display/key input circuit, and (2) is an output circuit.

The CPU appropriately controls the threshold level generation port j3 (5), the measurement counter (7), and the measurement area automatic adjustment device (8).

The operation of the apparatus having the above configuration will be explained.

Line image sensors (1) and (2) are control circuits (
4) Line image sensor switching signal (hereinafter referred to as A/
It is controlled by the B signal and selectively activated to send out a video signal. Threshold level generation circuit (
In step 5), a next threshold level pattern corresponding to the state of the light source and lens distortion is stored, and this pattern is sent out in synchronization with the tie and mink signals of the video signal.

A comparator (6) compares the video signal with a threshold level signal and sends a binary signal to a measurement counter (7). The measurement counter (7) measures only while the window position signal is given from the measurement area automatic adjustment device (8), and as a result, only the video signal within the window is measured. Next, the measurement area The details of the automatic adjustment system fit (8) are as follows.
This will be explained based on the diagram and FIG. As shown in FIG. 1, this measurement area automatic adjustment device (8) is composed of a counter generation signal generation circuit (b), a counter (2), and a window position generation circuit (2). The counter operation signal generation circuit (2) is supplied with an A/B signal, a binary signal, and a senna operation signal. Among these signals, the binarized signal and the senna operation signal are shown in Fig. 4 (Bl, (bl
It is as shown in . Then, the CPU generates a reset signal based on the falling edge of the binary signal and the rising edge of the binary signal by the line image sensor (1), <21
Specified in combination with The following is a line senna (
Case 1) will be explained. For example, when the counter operation signal generation circuit (2) is instructed to generate an operation signal at the rising edge of the binarized signal, the counter operation signal generation circuit (2) is operated as shown in FIG.
A pulse is generated whose binary signal rises at 9 as shown in , and an inverted signal of the product of this pulse and the sensor operation signal is obtained.

This signal (Fig. 4 (dl)) is input to the reset terminal of the counter (2), and the reset is canceled when it changes from high level to low level. From that point on, the counter (2) receives the timing signal ( 4(el) starts counting. The count output of the counter (2) is sent to the window position generating circuit (2).

As shown in the third color, the window position generation circuit is composed of a comparator CI-(2), a memory (TO), 04, and an AND gate (2). Memory (to) and 04
In this case, the first set value (A, ) and the second set value (4) are stored according to the CPU command.
), n, etc. are sent to the comparators on and e, respectively. Comparator 0 compares the count output C of the counter (2) with the first set value (AI) and outputs an output when C) A. Compare the count output (O and the second set value (A,) and calculate C(A
When , the comparator outputs 0, the output of (a) can be ANDed with the AND gate (to), and the output of the AND gate (2) is as shown in Figure 4 (f). Become.

That is, after the binary signal of the video signal rises, when the counter (2) counts the timing signal and the timing signal becomes as large as the first set value (A,), the AND gate (
When the output appears at n, and becomes the same thick lie as the second set value (A,), the output disappears. Sent to c-t:n, measurement counter (7) is CP
In response to a measurement command from U, for example, the bright width, the number of bright areas, the dark width, the number of dark areas, or a combination thereof within the window position is measured. For example, if the width of darkness is specified, the width of +92a) in FIG. 9 is measured.

In addition, in the above explanation, the case where the counter (2) starts counting by detecting the rising edge of the binary signal of the video signal is explained, and then, for example, as shown in FIG. It is also possible to start counting when the falling edge is detected. Also, as shown in the 61st BJI/c,
Counting may be started by detecting an edge of the binary signal.

In addition, in FIG. 5, (al is the binary signal, (b) is the output of the window position generation circuit (to), and in FIG. 6, (
al = (bl is a binary signal, (cl is the output of the window position generation circuit).

The seventh factor is block (2) of the measurement area automatic adjustment device according to another embodiment of the present invention. This device is composed of an actuation signal generating circuit (21'), a gate circuit (2), a counter (2), and a window position generating circuit (4). This operating signal generating circuit (21') is supplied with an A/B signal, a binary signal, and a sensor operating signal, similar to that shown in FIG. Among these signals, the binary signal and the sensor operation signal are as shown in FIG. In this case, the eighth
A pulse is generated that rises at the rise of the L 21 straightening signal shown in the figure (cl), and this pulse is set by the fall of the senna operation signal. This signal (Figure 8 (C)) c), and the gate circuit (c) sends a timing signal to the counter@.In other words, the gate circuit n is composed of an AND circuit 9, and the gate circuit (c) is gated by the positive potential signal from the actuation signal generation circuit (21'). The opening is L-shaped.

The sensor operation signal is applied to the reset terminal of the counter (2) via the inverter (2), and the setting is canceled by the rise of the sensor operation signal, and the timing signal from the gate circuit j8n that is sent thereafter is counted. do. The operations after counter ① are completely the same as those in the embodiment shown in FIG. 2, and the explanation thereof will be omitted. In addition, Fig. 8 (dl,
(e) corresponds to FIG.
Although the explanation has been made with (2) in mind, the operation of both line image sensors is selectively controlled in the same way, and the output signals thereof are also handled in the same way.

Note that the window position may be provided at one location or at a finite number of locations.If the window location is provided at multiple locations, it is only necessary to provide the same number of window position generation circuits.

It goes without saying that the apparatus according to the present invention can be applied to both -dimensional image processing and two-dimensional image processing.

〔Effect of the invention〕

As explained above, the present invention detects the edge or base position of the object specified in advance using the binary signal of the video signal of the object that changes sequentially, counts the timing signal from that position, and calculates the position corresponding to the count value. Since the window position can be generated at different times, the window position changes relatively over time within the field of view, but remains constant in relation to the subject. For this reason, it is possible to allow the meandering or shifting of the subject within the field of view, so there is no need to forcefully position the subject, and the window position can be set arbitrarily, making it extremely precise! F measurements are now possible.

Furthermore, since the window position is sequentially generated and φd based on the edge of the object or the reference position during measurement, high-speed processing is possible, unlike when software processing is performed after capturing the video signal.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an automatic measurement area adjustment device according to an embodiment of the present invention, Fig. 2 is a large block diagram showing a part of an image processing system incorporating the device, and the WXs diagram is shown in Fig. 1. Block diagram of the window position adjustment circuit, Figures 4 to 6
The figure is a time chart showing the operation of each part of the device.
The figure is a block diagram of an automatic measurement area adjusting device according to another embodiment of the present invention, and FIG. 8 is a time chart showing the operation of each part thereof. Explanatory diagram, No. 10
Figures 1 and 11 are explanatory diagrams of the window positions, respectively.
・Counter, - Window position generation circuit, (c)
...Gate circuit. Agent Patent Attorney Sanro Kimura Figure 3 Figure 4 Figure 5 vK6 Figure 7 JIS Figure 9 Figure 10 Figure 11

Claims (2)

[Claims] (1) An actuation signal generation circuit that receives a binarized video signal and sends an actuation signal to a counter at a predetermined timing with respect to the video signal: The actuation signal from the actuation signal generation circuit causes the image signal to be a counter that counts timing signals; a count output of the counter is compared with the count output and a first set value and a second set value, and the count value output and each of the set values are set under predetermined conditions; A window position generation circuit that sends a signal when the window position is reached to a measurement counter as a window position signal. (2) an actuation signal generation circuit into which a binarized video signal is input and which sends out an actuation signal at a predetermined timing with respect to the video signal; into which a timing signal of the video signal is input; a gate circuit that opens a gate upon input of an activation signal; a counter that counts a timing signal of a video signal from the gate circuit; a count output of the counter;
and a window position generation circuit that compares the set values of and sends a signal when the count output and each of the set values meet a predetermined condition to the measurement counter as a window position signal. Automatic adjustment device for measurement area.