JPS6356072A - Picture signal processing device - Google Patents

Abstract

PURPOSE:To continuously project various kinds of colors and the locus of the movement of the video of a moving object by providing a detection means detecting the picture signal concerning the moving object and a control means controlling the storage action of the picture signal. CONSTITUTION:When a switching switch 56 is connected to (b) side, in a field memory 22 the write of supplied digital television signals is prohibited and only read of them is executed so as to reproduce a still picture. And if a movement detection signal W1 outputted from a movement detection circuit 33 is a high level and moreover, at least, either a luminance detection signal W3 outputted from a luminance detection circuit 51 or a hue detection signal W4 outputted from a hue detection circuit 53 is the high level, the control circuit 23 controls the write action of the field memory 22 to execute a rewrite to the digital television signal outputted from an A/D conversion circuit 20. Thus by detecting a specified object picture with the movement of the object picture and the luminance or the hue of the picture the locus o//f the movement can be reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application in J.R. Industry) The present invention relates to an image signal processing device that expresses special screen effects using image signals.

[Conventional technology]

For example, in the case of broadcasting a baseball game, etc., you may see a continuous trajectory of a thrown ball captured on a television screen. The stiffness takes advantage of the fact that the pole is white,
This is because a white pseudo signal corresponding to a hole is generated and special processing is performed to pseudo-generate the locus.

FIG. 2 is an example of a +if image signal special effect processing device.

In FIG. 2, 20 is an NTSC television set 924.
The No. 3 input terminal, 10, compares the input NTSC television signal with a specific color (for example, white in the case of "-"), t, and quasi-value Th, and outputs a detection signal. 50 is an input terminal for the serial synchronization signal VD, 11 is a comparison circuit that outputs 1! J1 signal input terminal 5
Vertical address counter that is reset each time V0 is manually input from 0, 60 is horizontal open + V + I + B - "'f H11's manual input ☆; L゛.

12 is the horizontal opening +1J] signal input terminal 60 to which the manually inputted horizontal opening 1st line No. 3 H9 is input, and the water hand address counter is reset to Iij; 40 is the screen setting No. 13 input terminal; 13 is Said! The 6 direct addresses output from the π direct address counter 11 and the horizontal counter output from the rif horizontal address counter 12,
Determine the δ input address of the detection signal output from the navigation ratio rotation circuit 10, store the detection signal, and input the reset signal from the screen reset signal input terminal 40.
a memory circuit 70 for starting or stopping a fortune-telling operation;
14 is a pseudo signal generation source that generates a pseudo signal of the specific color (for example, white) level, and 14 is a source that manually generates the NTSC television signal and the pseudo signal No. 43 output from the pseudo signal source. , is a switching circuit that switches and outputs a pseudo signal from an NTSC television signal depending on the presence or absence of a detection signal output from the supplementary storage circuit 13. Also,
Reference numeral 15 denotes a clock pulse generation circuit which generates clock pulses for timing the operation of each circuit based on the vertical synchronization signal No. 15 and horizontal synchronization signal manually input, and 30 is an output terminal for an NTSC television signal.

In the above configuration, the changeover switch 14 is connected to the b side in the figure only during the period when the detection signal from the storage circuit 13 is supplied, and the NTSC television signal input from the input terminal 20 is connected to the selector switch 14. is the selector switch 14
The signal is output from the NTSC television signal output terminal via the b terminal of the NTSC television signal output terminal.

Further, the NTSC television signal is compared with the reference value Th, and if they match the M7$ value Th, a detection signal is generated by the comparison circuit 10 and supplied to the storage circuit 13. The supplementary memory circuit 13 writes a detection signal supplied when a screen reset signal or a human input is input to an address to be described later, and at the same time reads out and outputs the stored detection signal, and the direct changeover switch 14 operates as described above. 11r
It is connected to side a in the period diagram during which the above detection signal is supplied.

The +tFf storage circuit 13 reads the output detection signal from the comparison circuit 10 using the vertical address outputted from the vertical address counter 11 and the horizontal address outputted from the 11ft horizontal address counter 12. The address is determined and a detection signal is written. Note that the comparison circuit 10, vertical address counter 11, horizontal address counter 12, and memory circuit 13 are supplied with clock pulses generated by a clock pulse generation circuit 15, and the iμF loading and reading operations of the detection signal are performed as follows. This is done in synchronization with this clock pulse.

In addition, the vertical address counter 11 has iIj direct synchronization i=
The water/door address counter 12 is reset by the horizontal dome signal HD by the signal Vl), and the detection signal is 1.
111r is stored in the storage circuit 13 in the field 1η.

The switching circuit 14 outputs the pseudo signal outputted from all pseudo-Δ signal generation sources 0 in response to the detection signal read out from the supplementary memory circuit 13.

In this way, the white pseudo number 1'5 is output, and the trajectory of the ball is displayed on the screen of the display device.

[Problem to be solved by invention]

However, in the case of an image of a moving object outside the white space with high brightness in the image, it is not possible to determine the movement trajectory using the device described in 1111, and it is not possible to perform the processing described in 1. is only the position of the image of a moving object, and cannot reflect the movement of the image of the moving object itself, such as the rotation of a hall.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an image signal processing device that can continuously display various colors and motion trajectories of images of moving objects.
]It has been the target.

[Means for solving problems]

The image signal reproduction processing device of the present invention is a device that processes an image signal so as to reproduce the locus of an image of a moving object, and includes an image related to an arbitrary moving object among the direct images (a detection means for detecting the image signal S, a storage means for storing the image signal, and a control means for controlling the storage operation of the +if image I in the storage means in accordance with the detection result of the detection means; There are things I have prepared for.

(Function) With the above-described configuration, it is possible to store an image signal related to a rapidly moving object among the images 114. [Embodiment] Fig. 1 shows a block diagram of an embodiment of the present invention. It is a diagram.

In Figure 1, 1 is an NTSC television signal input terminal, 2 is an NTSC television signal output terminal, 3 is a special playback start signal input terminal, and 4 is a special playback stop signal input terminal. , 20 is an A/D conversion circuit that converts an analog NTSC television signal into a digital signal, and 21 is a direct A/D conversion circuit 20.
A delay compensation circuit that delays a television signal converted into a digital signal by one field period.

22 is a field memory that stores the television signal delayed by the delay compensation circuit 21; 23 is a command signal to be described later to control reading and writing of the field memory 22; It (I control circuit; 24);
25 is a D/Af conversion circuit that converts the digital signal of the field memory 22 into an analog signal;
A low pass filter (t,
pF). 30 is an LPF that limits the band of the television signal converted to digital J- by the Off-record A/D conversion circuit 20; 31 is an LP that limits the band of the signal read out from the field memory 22;
F, 32 is a difference detection circuit that detects the difference between each signal output from the LPF 30.31, and 33 is a comparison result that compares the difference signal obtained from the difference detection circuit 32 with the set value Thl. This is a motion detection circuit that generates an output signal W1 corresponding to the motion.

40 is a high pass filter (HPF) that limits the band of the direct NTSC television signal, 41 is +i
f is a trap circuit that removes color carrier waves from the output signal of the HPF 40 with steep attenuation characteristics, and has a center frequency of f. have. Reference numeral 42 denotes a contour detection circuit that detects the edge portion of an image and performs waveform shaping, and sends an output signal W2 to the control circuit 23 with a variable setting value Th2. A hunt elimination filter 50 receives the output of the changeover switch 56, removes the color signal band with the center frequency fs0, and extracts the luminance signal.
BEF), 51 compares the output of the BEF 50 with an arbitrary set value Th3, and sets the output signal W3 to 1. ) is a level detection circuit that sends the signal to the control circuit 23. 52 is a hand pass filter (BPF) which receives the output of the changeover switch 56 and extracts the color signal through the color signal band having the center frequency f5e; 53 is the B of 11f1;
Compare the output of PF52 and the output of PLL circuit 55,
The comparison output is compared with an arbitrary set value Th4, and the output signal W4 according to the comparison result is outputted to the control circuit 23 in 117r.
54 is an IuJ exchange switch 56b)
A burst extraction circuit 55 receives the output from the burst extraction circuit 54 and extracts one color interphase signal (color burst); No. 43 having a frequency (f, .) is generated and outputted to the object image hue detection circuit 53.
L L (Pt+aSc Locked Loop)
It is a circuit. 56 is the output of the A/D conversion circuit 20;
There is an fRJ changeover switch C for switching between the output read from the field memory 22 and the output read out from the field memory 22.

In the above configuration, the control circuit 23 is provided with a special 11 "raw start signal, a non-manufactured state, or a special i1".
We will start by explaining the normal operation of the 4th grade stop toy, No. 1, after it has been manually operated. An analog NTSC television screen number 1 inputted to the input terminal 1 is converted into a digital signal by an A/D conversion circuit 20. The digital signal is delayed by one field period in a delay compensation circuit 21 and then supplied to a field memory 22. Digital telegraph 1 supplied to the field memory 22
The control circuit 23 controls writing of the signal for each field and stores the signal. The stored signal J- is read out by the read command from the h controller 11 path 23.
The signal is supplied to the D/A conversion circuit 24 during the field period 1]1, and is converted into a ++F analog signal. The analog signal is band-limited by the LPF 25 and output from the output terminal 2 to N
It is output as a T S CH type telehijimin signal.

In this way, when the special playback start signal is not manually operated, or after the stop signal is manually operated,
Normal operation occurs.

Next, a case where a special rlT raw start signal is manually input to the control circuit 23 will be described.

When a special playback start signal is manually input to the control circuit 23, the writing of digital television signals in the field memory 22 is prohibited, and the digital television signals, which are still images without movement, are read out. become. At this time, signals of a specific object image on the screen are transmitted to Thl, Th2, Th3, Th2, Th3, etc., which are arbitrarily set by an operation unit (not shown) using the movement, outline, brightness, and hue of the specific object image as parameters. By comparing with Th4 and writing only the detected image signal into the field memory 22, the locus of the specific object image will appear on the screen. Detection of a specific object image signal on the screen using each of the above parameters will be described below.

First, motion detection of a moving object image will be explained.

The digital television signal output from the A/D conversion circuit 20 has its low frequency components removed by the LPF 30 and is input to the difference detection circuit 32 . Also, field memory 2
The digital television signal read from 2 is also L
Low-frequency components are removed by the PF 31, and similarly, the signal is manually input to the difference detection circuit 32.

The direct difference detection circuit 32 detects an inter-field difference signal from the human-powered digital television signal for two fields and outputs it to the motion detection circuit 33. The direct motion detection circuit 33 compares the arbitrarily settable value Thl with the direct field difference signal, and if the value is larger than Thl, it determines that there is movement in the specific object image, and detects a high level. Motion detection (generates No. 2 Wl and outputs it to the control circuit 23.

Next, outline detection of a moving object image will be explained.

When an NTSC television signal is input to the HPF 40, the low-frequency components of the NTSC division No. 5 are removed, and the signal is supplied to the contour detection circuit 42 without removing the color carrier wave from the trap circuit 41. The signal supplied to the contour detection circuit 42 is waveform-shaped, and when it exceeds an arbitrarily set threshold Th2, a high-level contour detection signal W2 is obtained and output to the control circuit 23.

Next, brightness detection of a moving object image will be explained.

Of the digital television signals output from the changeover switch 56, which will be described later, this corresponds to the luminance signal (only No. 2 is set to B).
The brightness detection circuit 51 compares the arbitrarily settable value Th3 with the human input signal, and if they match, sends a high-level brightness detection signal W3 to the control circuit 2.
Output to 3.

Finally, hue detection of a moving object image will be explained.

Of the digital television signals output from the changeover switch 56, only the signal corresponding to the color signal is extracted by the BPF 52 and input to the hue detection circuit 53. Further, the color burst signals 1' and 5 are extracted from the color burst signal outputted from the selector switch 56 by the burst extraction circuit 54 as described above, and the extracted color burst signals are sent to the PLLM path 55. The 71 p LL circuit 55 generates a reference phase No. 13 of the color signal and supplies it to the hue detection circuit 53 .

1j "[The color scheme detection circuit 53 compares the supplied color signal and the reference phase signal, and further compares the difference (No. A) with a value Th4 that can be arbitrarily set, and if it matches Th4, the high level A hue detection signal W4 is generated and supplied to the control circuit 23 (1) η.

In this embodiment, the switching switch, the connection state of the switch 56, and the r
According to the detection state of the detection circuit for each parameter, the following special reproduction can be performed.

First, when the selector switch 56 is instructed to be connected to the side a in the figure by an operation section (not shown), the writing and reading of the supplied digital television signal in the field memory 22 is performed as usual. Video i1G
At this time, the readout output of the field memory 22 is simultaneously supplied to the luminance detection circuit 51 and the hue detection circuit 53, and the luminance detection signal outputted from the luminance detection circuit 51; -, W3, from the hue detection circuit 53. 1 when at least one of the output hue detection signals W4 is at a high level.
In the tllJ control circuit 23, the write address is controlled, and the write operation of the field memory 22 is controlled so that the digital television signal where W3 or W4 is at a high level is not rewritten, thereby changing the brightness or brightness of a specific object image. It is possible to detect by hue and reproduce the trajectory of the movement. The special reproduction image at this time is reproduced as a trajectory that overlaps with the back side each time the image moves.

Further, when the selector switch 56 is instructed to be connected to the b side in the figure by an operation section (not shown), the field memory 22 selects the digital television 4 to be supplied.
Still image reproduction is performed because fortune-telling in No. 3 is prohibited and only reading is performed.
is supplied to. On the other hand, the motion detection circuit 33 performs the motion detection described above. Here, the motion detection signal W1 output from the motion detection circuit 33 is at a high level, and at least one of the luminance detection signal W3 output from the luminance detection circuit 51 and the hue detection signal W4 output from the hue detection circuit 53. When is at high level, control circuit 2
3, the write address is controlled to rewrite the digital television signal in which W1 is at a high level and W3 or W4 is at a high level among the digital television signals output from the A/D conversion circuit 20. By controlling the writing operation of the field memory 22 in the manner described above, it is possible to detect a specific object image based on the movement and brightness or hue of the object image, and to reproduce the locus of the movement. The special reproduction image at this time is reproduced as a trajectory that overlaps with the hand nrf side every time the image moves.

In addition, in the above-mentioned two types of special playback, the contour detection circuit 42 manually detects the contour of the television No. 43, and when the contour detection signal W4 output from the contour detection circuit 42 is at a high level, The control circuit 23 controls -8 input in the field memory 22 of digital television No. 95243 representing the edge portion in the same manner as the digital television signal of the portion specified by the brightness and hue.

As explained above, in this embodiment, a specific object image for which special reproduction is to be performed can be performed on any object image by specifying the movement outline, brightness, hue, etc. of the object image as parameters. It is possible to perform special playback.

In addition, when the device of this embodiment is incorporated into a recording/reproducing device such as a video tape recorder, the special feature is placed on the recording medium on which the image signal is recorded, at a position where the image signal for which special reproduction is to be performed is recorded. It is also possible to record No. 3 for controlling the start and stop of reproduction, and use the control signal to automatically control the start and stop of special reproduction.

(Effects of the Invention) As described above in the embodiments, the present invention provides an image signal processing device that can continuously display various colors and movement trajectories of images of moving objects. I can do it.

[Brief explanation of the drawing]

FIG. 1 shows a block diagram of an embodiment of the present invention, and FIG. 2 shows a block diagram of a conventional example. 22... Field memory 23... Control circuit 33... Motion detection circuit 42... Contour detection circuit 51... Brightness detection circuit 55. ...Hue detection circuit

Claims (1)

[Claims] A device for processing image signals to reproduce a trajectory of an image of a moving object, the device comprising a detection means for detecting an image signal related to an arbitrary moving object among the image signals, and storing the image signal. An image signal processing device comprising: a storage means; and a control means for controlling storage operation of the image signal in the storage means according to a detection result of the detection means.