Television – Stereoscopic
Patent
1997-07-10
1999-08-03
Lee, Richard
Television
Stereoscopic
382154, H04N 718
Patent
active
059331852
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a special effect apparatus, and more particularly to a special effect apparatus which is preferably applied to a case in which a special effect image is prepared such that a plurality of images intersect each other while retaining residual images in stereoscopic space over a lapse of time.
BACKGROUND ART
Conventionally, in the case where a special effect image is prepared such that one image that moves while retaining residual images in stereoscopic space intersects another image, it is thought that past images A1, A2 . . . A5 remain at positions at an infinite point (Z=.infin.) in a backward direction (on the Z-axis in other words) with respect to a screen surface 1 (located on the XY-coordinate axis) so that residual images A11, A12, . . . A15 of the past images A1, A2, . . . A5 of a moving body A can be projected on a screen surface 1 to be produced as shown in FIG. 1(A). Out of the past images A1, A2, . . . A5, the priority of an image is higher the nearer it is to the screen surface 1. Thus, priority is set so that higher priority is given to a position located at a place nearer to the screen surface. As a consequence, a position having the highest priority is to be projected on the front-most surface.
Thus, supposing that a moving body A moves from the position of a past image A1 to the position of the current image A6 by moving diagonally from the right backward direction to the left forward of the screen surface 1 while subsequently passing through the positions of images A2, A3, A4 and A5. There will be an order of higher priority which corresponds to the positions Z=Z.sub.A6, Z.sub.A5, Z.sub.A4, Z.sub.A3, Z.sub.A2, Z.sub.A1, in the order beginning with images nearest to the screen surface 1, and there will be residual images A6, A5, A4, A3, A2, A1 between the past images A1 through A5 and the current image A6 as shown in the equation:
As a consequence, when it comes to the residual images A11 through A15 that correspond to the past images A1 through A5, as residual images at an infinite point Z=.infin., the part of the image A1 which is not overlapped by the past image A2 located at a position nearer to the screen surface is retained as a residual image A11, while the image part of the past image A2 which is not covered by the past image A3 located at a position nearer to the screen surface 1 is retained as a residual image A12, the part of past image A3 which is not covered by the past image A4 located at a position nearer to the screen surface 1 is retained as a residual image A13, the part of past image A4 that is not covered by past image A5 located at a position nearer to the screen is retained as a residual image A14, and an image A5 located at the position nearest to the screen surface 1 out of all the past images is retained as a residual image A15 as a whole.
On the other hand, it is thought that the current image A6 of the moving body A is located at a position of Z=Z.sub.A6 in the Z direction which is greater in the priority order in which the images are produced on the screen surface 1 than the residual images A15 through A11.
In addition, since the current image A6, and residual images A15, A14, A13, A12, A11 are images which go back into the past in a consecutive order, the residual images A5, A4, . . . A1 on the screen surface 1 are displayed so that the tone thereof becomes thinner while the current image A6 on the screen surface 1 has the thickest tone through a consecutive key processing of keying levels using keying levels K6 through K1 that correspond to the sizes up to the past points, as is shown in the following equation:
When such image processing is performed, the moving body A moves from the position of the image A1 to the position of the image A6 as described above so that the current image A6 and the part of the residual image A15 which is not covered by the image A6 are displayed together on the right side of the current image A6 on the screen surface 1. At the same time, the residual images A14, A13, A12 and A11 ar
REFERENCES:
patent: 4819064 (1989-04-01), Diner
patent: 4954890 (1990-09-01), Park
patent: 5175616 (1992-12-01), Milgram et al.
patent: 5625408 (1997-04-01), Matsugu et al.
patent: 5646679 (1997-07-01), Yano et al.
Harada Tetsuya
Minami Nobuyuki
Moriwake Katsuakira
Nakata Tetsuro
Ueta Motomu
Frommer William S.
Lee Richard
Smid Dennis M.
Sony Corporation
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