JPH07222203A - Three-dimensional video cassette converting system - Google Patents

Abstract

PURPOSE:To automatically convert a two-dimensional video cassette to a three- dimensional video cassette. CONSTITUTION:A 3D converted data generating circuit generates 3D converted data corresponding to motion vectors detected from two-dimensional video cassette signals. These data are multiplexed to the two-dimensional video cassette signals by a multiplexer circuit and transmitted. A 3D converted data detection circuit 23 detects the 3D converted data from the received two-dimensional video cassette signals. Based on these data, three-dimensional video cassette signals are spriously provided at the output of a video switching circuit 21 after being delayed for prescribed fields by a field memory 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image software conversion system for receiving a two-dimensional image software signal and converting it into a three-dimensional image software signal.

[0002]

2. Description of the Related Art Conventionally, for transmitting a three-dimensional video soft signal having left and right parallax, for example, Japanese Unexamined Patent Publication No. 4-250.
As shown in No. 791, there is a method in which a differential signal is multiplexed with a main signal and transmitted, and this is returned to the left and right video signals on the receiving side.

However, this method requires a wide transmission band and cannot use the existing 2D video software on the transmitting side, so that it is necessary to manufacture new 3D video software, which increases the cost. Was the cause of.

Further, the receiver side needs a decoder for demodulating the main signal and the differential signal into the original right-eye video signal and the left-eye video signal, which inevitably increases the cost.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks, is completely compatible with the current broadcasting system, does not require the creation of new 3D video software, and is the receiving side. However, it proposes a three-dimensional video software conversion method that can be provided inexpensively by the receiving device.

[0006]

According to the present invention, the input 2
It is a 3D image software conversion method that automatically and automatically converts 3D image software to 3D image software.

Further, according to the present invention, conversion information for converting into a 3D image software signal is multiplexed on the received 2D image software signal, and the 2D image software is converted into the 3D image software. The conversion is a 3D image software conversion method performed based on the conversion information separated from the 2D image software signal.

[0008]

According to the present invention, the transmitting side creates conversion information for converting into a three-dimensional video soft signal based on the amount of movement of the two-dimensional video soft signal to be transmitted. This conversion information is transmitted after being multiplexed in the vertical blanking period of the 2D video software signal.

Then, on the receiving side, the conversion information is automatically discriminated from the received two-dimensional video software signal, and the two-dimensional video software has a pseudo parallax based on this conversion information.
Convert to 3D video software.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the three-dimensional video software conversion system of the present invention is applied to a current NTSC television transmission system will be described below with reference to the drawings.

First, an embodiment in which the transmitting side receives the transmitted two-dimensional video soft signal without any modification will be described.

FIG. 1 shows a receiver used in this embodiment. 2D video software signal is input to the input terminal 1,
One of the two-dimensional video soft signals is supplied to the video switching circuit 2.

The other of the two-dimensional video soft signals is supplied to the field memory 5. This field memory 5
Is variably controlled by the memory control circuit 6 on a field-by-field basis within a range from a delay amount of 0 to a maximum of 60 fields (about 1 second in the NTSC system). The variable unit may be a small unit of one field or less.

The field memory output is supplied to the video switching circuit 2. This video switching circuit 2
The outputs are connected to the output terminal 3 for outputting the left-eye video signal L and the output terminal 4 for outputting the right-eye video signal R, respectively, and are controlled so that the output state is switched according to the direction of movement of the subject.

The other of the two-dimensional video soft signal is supplied to the motion vector detecting circuit 7 and, after detecting a motion vector corresponding to the motion between fields, is supplied to the CPU 8.

The CPU 8 extracts a horizontal component from the motion vector and controls the memory control circuit 6 in accordance with the horizontal component. That is, when the motion of the subject is large and the motion vector is large, the delay amount of the field memory 5 is controlled to be small, and when the motion of the subject is small or the motion vector is small as in slow motion reproduction, the delay amount is reduced. Controlled to be more. The maximum number of delay fields in the field memory is 60, which is N
The time is equivalent to 1 second of the TSC system, and it is almost a time corresponding to a normal video scene, but when it is used for slow motion reproduction at a slower speed, a large-capacity memory of 60 fields or more may be used. In addition, for slow-motion slow-motion reproduction at an ultra-low speed, several hundred fields may be delayed.

Further, when the direction of the motion vector is from left to right, the CPU 8 makes the two-dimensional image soft signal the left-eye image signal, and in the opposite case, makes the delayed two-dimensional image soft signal the right-eye image signal. The switching circuit 2 is controlled.

Therefore, in a scene in which a subject moves horizontally in a two-dimensional video soft signal, parallax occurs depending on the speed of movement.

The left and right video signals from the output terminals 3 and 4 are two-dimensional video soft signals when supplied to a lenticular type stereoscopic display without glasses as described in, for example, Japanese Patent Laid-Open No. 3-65943. Even a partially three-dimensional image can be reproduced in a pseudo manner.

As described above, in the present embodiment, the broadcasting station side has no burden, and the receiving apparatus side is provided with a conversion device for converting a two-dimensional video soft signal into a three-dimensional video soft signal. 3D images can be reproduced.

Next, while the present invention is completely compatible with the current NTSC television transmission system, it is
An embodiment applied to a transmission method in which conversion information is multiplexed with a three-dimensional video soft signal and transmitted will be described.

FIG. 2 is a schematic block diagram of a transmitter according to the present invention provided in a broadcasting station. In the 2D video software signal to be transmitted, the motion vector detecting circuit 10 detects a motion vector according to the motion between fields, and 3D
It is supplied to the conversion data generation circuit 12. The 3D conversion data generation circuit 12 generates 3D conversion data as 3D conversion information for converting into a 3D video soft signal based on the horizontal component of the motion vector. And this 3D
The converted data is multiplexed and output in the vertical blanking period of the two-dimensional video soft signal to be transmitted by the multiplexing circuit 13. The motion vector detection circuit 10 and the 3D conversion data generation circuit 12 operate based on the vertical sync signal V and the horizontal sync signal H separated by the sync separation circuit 1.

Next, the 3D converted data will be described. As shown in FIG. 3A, the 3D-converted data is inserted at the 20th position in the odd field (H is a horizontal scanning period) and the 283th position in the even field. Specifically,
As shown in B, ON / OFF control data (1 bit) indicating whether 3D conversion is performed depending on the presence / absence of a horizontal component of the motion vector, and left / right direction indicating whether the subject moves left or right. A total of 10-bit digital data of delay amount data (8 bits) that is inversely proportional to the size of the data (1 bit) and the horizontal component of the motion vector and determines the delay amount of the field memory described later in the range of 0 to 256 fields. Composed of.

Next, FIG. 4 shows a schematic block diagram of a receiving apparatus according to the present invention provided in each home. First, the received 3D conversion data multiplexed 2D video soft signal is
It is supplied to the field memory 20 and the video switching circuit 21 which can control the delay amount in the range of 0 to 256 fields. The 3D conversion data detection circuit 23 also includes a vertical synchronization signal V and a horizontal synchronization signal H separated by the synchronization separation circuit 24.
Based on the above, the 3D-converted data multiplexed on the 20th H in the odd field and the 283H in the even field is extracted from the 3D-conversion data multiplexed 2D video soft signal. The extracted 3D conversion data is supplied to the CPU 22.

When the ON / OFF control data indicates ON, the CPU 22 supplies the delay amount data to the field memory 20 to perform the 3D conversion. The field memory 20 is variably controlled in the range of 0 to 256 fields according to the delay amount data.

The CPU 22 also supplies direction data to the video switching circuit 21. This video switching circuit 21
Indicates that when the direction data indicates right, that is, when the subject moves from left to right, the 2D video soft signal is the right-eye video signal and the delay signal is the left-eye video signal, and in the opposite case, the delay signal is Are controlled to be the right-eye video signal and the two-dimensional video soft signal is the left-eye video signal.

Therefore, for a scene in which a subject moves in the horizontal direction in a two-dimensional video soft signal, 3D is used.
The converted data is automatically discriminated and automatically converted into a 3D image software signal having parallax.

As described above, in this embodiment, the transmission equipment for multiplexing the conversion information on the two-dimensional image software signal on the transmitting device side requires a little cost, but it is necessary to newly create three-dimensional image software. There is no. Further, the receiving device side can construct a three-dimensional video software signal conversion device by simply adding a simple decoder, so that a significant cost reduction can be achieved.

In the above-mentioned embodiment, the time difference is generated in the two-dimensional video soft signal as a method of providing the left and right parallax. It becomes possible to see. The Pulfrich effect is a stereoscopic effect due to the relationship between the perceptual time and the stimulus intensity in which the brighter one feels as if it was turned on earlier, even when the light stimuli are turned on at the same time.

That is, an attenuator that attenuates the luminance level between 0 db and -10 db is used instead of the field memory in FIG. 4, and the amount of luminance attenuation based on the motion vector is used instead of the delay amount data of the 3D conversion data. You can use the data. This brightness attenuation amount data is created so that it decreases when the movement of the subject is large and the motion vector is large on the transmission side, and is increased when the movement of the subject is small and the motion vector is small.

A variable gain amplifier may be used instead of the attenuator.

The 2D video soft signal in the format shown in FIG. 3 can be recorded and reproduced by a conventional VTR.

[0033]

As described above, according to the present invention, it is not necessary for the transmitting side to newly create three-dimensional video software, and
3 for each home while maintaining full compatibility with the current broadcasting system
Dimensional video software signals can be transmitted.

Also, since the transmitted 2D video soft signal can be automatically converted into a 3D video soft signal on the receiving side, the 3D video can be easily enjoyed at home.

Furthermore, since the conversion from the 2D video software to the 3D video software can be realized very easily, the cost of the receiver can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a receiver used in a first embodiment of a 3D image software conversion system of the present invention.

FIG. 2 is a schematic block diagram of a transmitter used in a second embodiment of the 3D image software conversion method of the present invention.

FIG. 3 is a diagram showing a transmission signal format in a second embodiment of a 3D video software conversion system of the present invention.

FIG. 4 is a schematic block diagram of a receiver used in the second embodiment of the 3D image software conversion method of the present invention.

[Explanation of symbols]

 5, 20 field memory 6 memory control circuit 7, 10 motion vector detection circuit 8 22 CPU 12 3D conversion data generation circuit 13 multiplex circuit

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[Procedure amendment]

[Submission date] February 1, 1995

[Procedure Amendment 1]

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[Name of item to be corrected] Claim 3

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[Name of item to be corrected] Claim 5

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[Procedure 3]

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[Name of item to be corrected] Claim 6

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[Correction target item name] 0009

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Then, on the receiving side, conversion information is automatically determined from the received 2D video software signal, and based on this conversion information, the 2D video software is converted into 3D video software having pseudo parallax.

Claims (13)

[Claims] 1. A three-dimensional video software conversion method, which automatically and automatically converts input two-dimensional video software into three-dimensional video software. 2. Receiving the transmitted 2D video software,
A 3D image software conversion method characterized by automatically converting to 3D image software having a right-eye image signal and a left-eye image signal based on the 2D image software. 3. The conversion from the 2D video software to the 3D video software is performed by detecting a portion suitable for converting the 2D video software into the 2D video software. The three-dimensional video software conversion method according to item 2. 4. The 3D video software conversion method according to claim 3, wherein the portion suitable for the conversion is a moving portion of the 2D video software. 5. The three-dimensional according to claim 1, wherein the conversion from the two-dimensional image software to the two-dimensional image software is performed by generating a relative time difference between the two-dimensional image software signals. Video software conversion method. 6. The conversion from the 2D image software to the 2D image software is performed by controlling the time difference according to the speed of a moving part of the 2D image software. 3D video software conversion method described in 5. 7. The method of generating the relative time difference is such that the two-dimensional video soft signal is temporarily stored in a memory,
7. The three-dimensional video software conversion system according to claim 6, wherein the two-dimensional video software signal is realized by delaying the two-dimensional video software signal with a delay of a plurality of fields of 0 or more. 8. The three-dimensional image software conversion method according to claim 7, wherein the number of fields to be delayed is selected according to the speed of the moving part. 9. The received 2D video software signal is multiplexed with conversion information for converting to a 3D video software signal, and the conversion from the 2D video software to the 3D video software is performed by The 3D image software conversion method according to claim 1, wherein the 3D image software conversion method is based on the conversion information separated from the 2D image software signal. 10. The 3D image software conversion method according to claim 9, wherein the conversion information is created based on the 2D image software signal. 11. The 3D video software conversion method according to claim 10, wherein the conversion information is created based on a motion amount of the 2D video software. 12. The 3D image software conversion method according to claim 9, wherein the conversion information is multiplexed in a vertical blanking period of a 2D image software signal. 13. The 3D image software conversion method according to claim 12, wherein the conversion information is multiplexed for each field in a predetermined horizontal scanning period of a vertical blanking period of a 2D image software signal.