Television – Image signal processing circuitry specific to television – Special effects
Reexamination Certificate
1999-11-12
2001-12-04
Hsia, Sherrie (Department: 2614)
Television
Image signal processing circuitry specific to television
Special effects
C348S591000, C348S578000, C348S239000
Reexamination Certificate
active
06327004
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an art which replaces a predetermined picture of an area with a LOGO, particularly to an art which replaces the picture with the LOGO so that the replacing LOGO appears just like a portion of the present picture corresponding to the changes of a present picture.
Recently, accompanied with the prosperity of the TV broadcastings, a great number of advertisements are televised through the TV broadcastings. For example, in the case of a broadcast of a baseball game, the advertisements behind the baseball players, for example, the names of the firms, the LOGOs, the slogans and the like, together with the movements of the baseball players, are shot by the TV camera and broadcast.
Now, there were cases that a broadcast would have been required in a state where the original LOGOs were deleted and replaced with other LOGOs only during the live broadcasting on the TV screen because of some circumstances. Moreover, there were also cases that LOGOs would have been drawn at a place where nothing was originally drawn on only during the live broadcast on the TV screen.
However, according to the prior art, it was easily performed to replace only the predetermined area of a certain picture with the specified LOGOs, but the prior art could not replace the picture with the specified LOGOs as if the LOGOs have originally been there. For example, as exemplifying a live broadcast of a baseball game on the TV screen described above, if LOGOs drawn on the back fence of the field was tried to be replaced with the other LOGOs, since even the players who stood in front of the LOGOs were also replaced with the LOGOs, the pictures were intolerable ones for broadcastings.
Accordingly, an object of the present invention is to provide an art which replaces a portion of a present picture with LOGOs as if they might have been portions of the present picture corresponding to the changes of the present picture.
SUMMARY OF THE INVENTION
The above described object of the present invention is achieved by the picture replacement system which is characterized in that it comprises; a pan head; a camera set on the foregoing pan head; a rotary encoder embedded in the foregoing pan head for detecting the movement amount and outputting the detected movement amount as a movement information; reference picture memorizing means in which a reference picture being as a reference of an area to be replaced was stored; LOGO picture memorizing means in which replacing LOGO pictures were stored; position detection means for detecting a position of a replacement area in a present picture taken by the foregoing camera on the basis of the foregoing movement information; key signal generation means for comparing the present picture within a replacement area detected by the foregoing position detection means with a reference picture within the foregoing replacement area memorized in the foregoing reference picture memorizing means and generating a key signal indicating a portion in which the present picture and the reference picture are identical or different; and replacement means for replacing a portion in which the present picture and the reference picture are identical with a LOGO picture corresponding to the foregoing identical portion out of the foregoing LOGO picture.
It should be noted that it is desirable that the size of a reference picture is stored as well as a reference picture is stored per one pixel unit in the above described reference picture memorizing means, and the above described position detection means has converting means for converting a movement information into an address information of the screen and position area detection means for detecting a replacement area in the present picture on the basis of the foregoing address information and the size of the reference picture.
Moreover, the above described replacement means is a switch selectable per one pixel unit on the basis of a key signal, it is desirable that the replacement means is constituted so that in the case where a key signal indicates that the present picture and the reference picture are identical, it switches to the side of inputting the corresponding LOGO picture, in the case where a key signal indicates that the present picture and the reference picture are different, it switches to the side of inputting the present picture, and only the portion in which the present picture and the reference picture within the replacement area of the present picture are identical is replaced with LOGO picture.
Moreover, the shooting power is changeable, if the replacement means further has a lens outputting power information according to the shooting power, replacement area adjustment means for adjusting a replacement area detected by the foregoing position detection means on the basis of the foregoing power information, and means for changing the LOGO picture memorized in the foregoing LOGO picture memorizing means on the basis of the power information, it is also applicable to the shooting which changes the shooting power.
The above described object of the present invention is a picture replacement system for replacing a picture of a predetermined area of the present picture with a desired LOGO picture, is achieved by the foregoing replacement system, which is characterized in that it comprises: a pan head; a camera set on the foregoing pan head; a rotary encoder embedded in the foregoing pan head for detecting the two dimensional movement amount of the camera and outputting a detected movement amount as a movement information; reference picture memorizing means in which a reference position of the foregoing replacement area and lengths of vertical and horizontal directions of replacement area with the foregoing reference position as the reference are stored as well as a reference picture to be a reference of a replacement area; LOGO picture memorizing means in which replacing LOGO pictures were stored; calculating means for calculating address of a reference position of the foregoing replacement area in the present picture on the basis of the foregoing movement information; replacement area detection means for detecting a replacement area in the present picture from the lengths of vertical and horizontal directions of the foregoing replacement area with the foregoing calculated address as a reference position; key signal generation means for comparing the present picture within the foregoing detected replacement area with the reference picture within the foregoing replacement area and generating a key signal indicating that pixels where the present picture and the reference picture are identical or different; and replacement means for replacing a portion in which the present picture and the reference picture are identical with the LOGO picture corresponding to the foregoing identical potion out of the foregoing LOGO picture.
It should be noted that the above described calculating means has previously memorized a movement information (&agr;, &bgr;) and an address (A,B) of a reference position of a replacement area at the time when a replacement area is located at the first position of the screen, and a movement information (&agr;, &dgr;) and an address (C,D) of the reference position of a replacement area at the time when a replacement area is located at the second position of the screen, and by substituting a movement information (&lgr;, &mgr;) which is available at the time when a replacement area moved to a given position of the present picture into the following equations expressed by,
x=A+
(&lgr;−&mgr;)×(
C−A
)/(&ggr;−&agr;)
y=B+
(&mgr;−&bgr;)×(
D−B
)/(&dgr;−&ggr;)
an address (x, y) of a reference position of a replacement area at the time when the replacement area moved to a given position is calculated.
Moreover, it is desirable that the replacement area detection means further has means for determining whether an address of each pixel within the replacement area which is detected with an address of the reference positi
Koguma Toru
Miyabayashi Satoshi
Hsia Sherrie
Nippon Television Network Corp.
Ostrolenk Faber Gerb & Soffen, LLP
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